Tyler was looking at this system of equations: x+y=5 and x+y=7

He said, "Just looking at the system, I can see it has no solution. If you add two numbers the sum can;t be equal to two different numbers. " Do you agree with Tyler?

Answer:

The vertical line test can be used to determine whether a graph represents a function. ... If we can draw any vertical line that intersects a graph more than once, then the graph does not define a function because that x value has more than one output. A function has only one output value for each input value.

Step-by-step explanation:

Can i get braineist pls

In response to the supplied query, we may state that Ben's speed, equation rounded to one decimal place, is x + 0.8 = 2.5 mph.

Using the equals symbol (=) to indicate equivalence, a math equation links two statements. Algebraic equations prove the equality of two mathematical expressions by a mathematical assertion. The equal sign, for example, provides a gap between the numbers 3x + 5 and 14 in the equation 3x + 5 = 14. You can use a mathematical formula to understand the connection between the two phrases that are written on opposite sides of a letter. Most of the time, the logo and the particular software match. e.g., 2x - 4 = 2 is an example.

Rate times distance

Let x represent Alan's speed in mph. Ben's speed will then be x + 0.8 mph.

They will have travelled 12.6 kilometres in total when they finally cross paths. The formula is as follows:

\(12.6 = (x + x + 0.8) × 3\\12.6 = 6x + 2.4 \s10.2 = 6x \sx = 1.7\)

Alan is moving at a speed of 1.7 mph, decimal place included.

Ben's speed, rounded to one decimal place, is x + 0.8 = 2.5 mph.

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Answer:

​Alan's rate of speed is 1.7 mph.

​Ben's rate of speed is 2.5 mph.

Step-by-step explanation:

We can use the distance-rate-time formula to solve the given problem.

\(\boxed{\sf Distance=rate \times time}\)

Create a distance equation for each of the hikers.

Therefore, the equation for Alan's distance in terms of r is:

\(\implies \sf d = 3r\)

Therefore, the equation for Ben's distance in terms of r is:

\(\implies \sf d = 3(r+0.8)\)

Alan and Ben are 12.6 miles apart and walking toward each other.  

Therefore, their combined distances will equal 12.6 miles.

Set the sum of the found expressions for distance equal to 12.6 and solve for r:

\(\implies \sf d_{Alan}+d_{Ben}=12.6\)

\(\implies \sf 3r+3(r+0.8)=12.6\)

\(\implies \sf 3r+3r+2.4=12.6\)

\(\implies \sf 6r+2.4=12.6\)

\(\implies \sf 6r=10.2\)

\(\implies \sf r=1.7\)

Therefore:

​Alan's rate of speed is 1.7 mph.

​Ben's rate of speed is 2.5 mph.

After 10 years, the population is 162.79, which represents a growth of 62.79%.

If a population grows by 5% per year for 10 years, the total growth is not 50%. To see why, let's take the example of a population of 100. If it grows by 5% in the first year, the new population is 100 + (5% of 100) = 105. In the second year, it grows by another 5%, so the new population is 105 + (5% of 105) = 110.25.

Continuing this pattern for 10 years, we get:

Year 1: 105

Year 2: 110.25

Year 3: 115.76

Year 4: 121.55

Year 5: 127.63

Year 6: 134.01

Year 7: 140.71

Year 8: 147.73

Year 9: 155.09

Year 10: 162.79

So after 10 years, the population has grown from 100 to 162.79, which represents a growth of 62.79%. This is more than 50% because the percentage growth is compounded each year, meaning that the growth in each subsequent year is based on the larger population from the previous year.

In summary, when calculating percentage growth over multiple years, it's important to remember that the percentage growth is compounded each year and not added linearly.

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The expression which shows the amount of money, in dollars Maddie spent on mailing letters in March is 3.7 +0.74 y.

Given Maddie mailed y letters in January. She mailed 3 times as many letters in February. In March she mailed 10 letters more than half of what she mailed in January and February.

Expression  is combination of numbers, symbols, fraction, coefficients which are not found in equal to form.

Letters mailed in January=y

Letters mailed in February=3y

Letters mailed in March=10+(y+3y)/2

=10+2y

Amount of mailing of 1 letter=$0.37.

Amount of mailing of letters in March=0.37(10+2y)

=3.7+0.37*2y

=3.7+0.74y

Hence the expression which shows the amount of letters mailed in March is 3.7+0.74 y.

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Answer:

tgvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv

Step-by-step explanation:

vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv

Answer:

12.8, 12.09, 12, 12, 1/2, 2/5

Step-by-step explanation:

This is my answer if you mean greatest to smallest if you did not mean that tell me and I will re-write this.

The System Effectiveness is approximately 0.763.

To calculate the System Effectiveness, we need to multiply the values of Operational Readiness, Design Adequacy, Availability, Maintainability, and Mission Reliability.

System Effectiveness = Operational Readiness * Design Adequacy * Availability * Maintainability * Mission Reliability

Plugging in the given values:

System Effectiveness = 0.89 * 0.95 * 0.98 * 0.93 * 0.99

System Effectiveness ≈ 0.763

Therefore, the System Effectiveness is approximately 0.763.

The correct answer is a. 0.763.

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The simplified value of  \(\sqrt[4]{1296} /25\) is 0.24.

Simply put, to simplify is to make something simpler. Simplifying an equation, fraction, or issue in mathematics entails taking something complex and making it simpler. The issue is made simpler by calculations and problem-solving strategies. We can simplify fractions by removing all common elements from the numerator and denominator and putting the fraction in its simplest/lowest form.

Given  \(\sqrt[4]{1296} /25\)

factors of 1296 are = 2⁴ x 3⁴

\(\sqrt[4]{1296}\) = \((2^{4} *3^{4}) ^{\frac{1}{4} }\)

\(\sqrt[4]{1296}\) = 6

\(\sqrt[4]{1296} /25\)  = 6/25

\(\sqrt[4]{1296} /25\) = 0.24

Hence the value is 0.24.

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The percent decrease in the music revenue is 60.2%

Percent decrease can be described as the reduction in the value of a number.

In 1999, the revenue of the company was $14.1 billion

In 2014, the revenue of the company was $5.6 billion

The percent decrease can be calculated as follows

= 14.1 - 5.6/14.1 × 100

= 8.5/14.1 × 100

= 0.602 × 100

= 60.2 %

Hence the percent decrease is 60.2%

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Anna has $540 to spend at the bicycle shop → this means that she can spend the $540 or less, you can symbolize this as ≤ $540

Her costs include:

• A bicycle for ,$402.87

• 3 bicycle reflectors for $10.97/each, the total will be 3*10.97=,$32.91

• A pair of bike gloves for ,$14.42

• With the remaining money, she wants to buy as many biking outfits as possible. Let "o" represent the number of outfits she can buy, considering each one costs $44.90, then the total cost for the outfits can be symbolized as ,$44.90o

The calculation for her total expenses is the sum of everything she buys:

"Bicycle"+"Reflectors"+"Gloves"+"Outfits"≤$540

Using the costs listed above the expression is

Simplify the like terms, i.e. add the alone numbers together

Answer:

No

Step-by-step explanation:

Let's calculate sinA and sinB.

sinA = opposite / hypotenuse = 12 / 20

sinB = opposite / hypotenuse = 16 / 20

Since 12 / 20 ≠ 16 / 20, she is incorrect.

Answer:

1.\(8m-2n\)
2.\(-2b+5\)
3.\(-8c+46\)

Step-by-step explanation:

Given the following questions:

\(3m-2n+5m\)
\(-b-b+5\)
\(50-9-8c+5\)

To simplify the following we are going to have to regroup and combine like terms which means we are going to use inverse of operations on terms with similar variables.

Question one:
\(3m-2n+5m\)
\(3m-2n+5m=3m+5m-2n\)
\(3m+5m-2n\)
\(3m+5m=8m\)
\(=8m-2n\)

Question two:
\(-b-b+5\)
\(-b-b=-b+-b=-2b\)
\(=-2b+5\)

Question three:
\(50-9-8c+5\)
\(50-9-8c+5=-8c+50-9+5\)
\(-8c+50-9+5\)
\(50-9=41\)
\(-8c+41+5\)
\(41+5=46\)
\(=-8c+46\)

Which means your answers are "8m - 2n, -2b + 5, and -8c + 46."

Hope this helps.

Answer: -8

Step-by-step explanation: I did long division for 3/2 = -1.5 now I have to mutiply -1.5 x 4 = -6 - 2 = -6 + (-2) which now eqauls negative 8

Ah bg de cf

Step-by-step explanation:

i think thats how you do it becuse i did that

Answer:

Let America be America Again Analysis In Langston Hughe's poem “Let America be America Again” he talks about how America should return to the way that it was perceived to be in the dreams before America was truly America. Throughout the poem, he uses various methods to evoke the patriotic images and dreams that he feels America should and will eventually be. Hughes states that America is supposed to be a place of equality for everyone including both white and colored people.

Step-by-step explanation:

If it was helpful can I plz have a brainliest

The probability of selecting a club card from a well-shuffled standard deck of 52 cards is 0.25 or 25%.

To determine the probability of selecting a club card from a standard deck of 52 cards, we need to consider the number of favorable outcomes (club cards) and the total number of possible outcomes (all cards in the deck).

In a standard deck, there are 13 club cards (2, 3, 4, 5, 6, 7, 8, 9, 10, Jack, Queen, King, Ace) out of the total 52 cards. Therefore, the number of favorable outcomes is 13.

The total number of possible outcomes is simply the total number of cards in the deck, which is 52.

To calculate the probability, we divide the number of favorable outcomes by the total number of possible outcomes:

Probability of selecting a club card = Number of favorable outcomes / Total number of possible outcomes

                                    = 13 / 52

                                    = 0.25

Therefore, the probability of selecting a club card from a well-shuffled standard deck is 0.25, or 25% (rounded to the nearest thousandth).

This means that, on average, there is a 25% chance of randomly selecting a club card from the deck.

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Answer:

Domain of f(x) = 2/7x - 2: (-∞, ∞)

Range of f(x) = 2/7x - 2: (-∞, ∞)

Domain of f(x) = |x + 3| - 1: (-∞, ∞)

Range of f(x) = |x + 3| - 1: [-1, ∞)

Domain of f(x) = -5x + 4: (-∞, ∞)

Range of f(x) = -5x + 4: (-∞, ∞)

Step-by-step explanation:

We can use a graphing calculator to find the graphs.

Domain is the set of all x-values that can be inputted into function x.

Range is the set of all y-values that can be outputted from function x.

the p-value (0.208) is greater than the significance level (0.01), we fail to reject the null hypothesis

To determine if there is evidence to suggest that the proportion of voters who believe pharmaceutical companies invent diseases to make money is different for Democrats and Republicans, we can perform a hypothesis test. Let p1 be the proportion of Democrats who believe in the conspiracy theory, and p2 be the proportion of Republicans who believe in the conspiracy theory.

Let's set up the hypotheses:

Null hypothesis (H0): p1 - p2 = 0 (There is no difference in the proportions of Democrats and Republicans who believe in the conspiracy theory)

Alternative hypothesis (Ha): p1 - p2 ≠ 0 (There is a difference in the proportions of Democrats and Republicans who believe in the conspiracy theory)

We will use a two-sample proportion test to test these hypotheses. The test statistic for this test is given by:

\(\[ Z = \frac{\hat{p}_1 - \hat{p}_2}{\sqrt{\hat{p}(1-\hat{p})(\frac{1}{n_1}+\frac{1}{n_2})}} \]\)

where:

- \(\( \hat{p}_1 \)\) and \(\( \hat{p}_2 \)\) are the sample proportions of Democrats and Republicans who believe in the conspiracy theory, respectively.

- n₁ and n₂ are the sample sizes of Democrats and Republicans, respectively.

- \(\( \hat{p} \)\) is the overall proportion of belief in the conspiracy theory, calculated as the total number of believers divided by the total sample size.

The p-value is the probability of observing a test statistic as extreme or more extreme than the one calculated from the sample data, assuming the null hypothesis is true.

Given the sample data:

Democrats: n₁ = 788 and \(\( \hat{p}_1 = \frac{137}{788} \)\)

Republicans: n₂ = 866 and \(\( \hat{p}_2 = \frac{105}{866} \)\)

Let's calculate the test statistic and the p-value:

Step 1: Calculate \(\( \hat{p} \)\):

Total number of believers = 137 + 105 = 242

Total sample size = 788 + 866 = 1654

\(\( \hat{p} = \frac{242}{1654} \)\)

Step 2: Calculate the test statistic (Z):

\(\[ Z = \frac{\frac{137}{788} - \frac{105}{866}}{\sqrt{\frac{242}{1654} \cdot \left(1 - \frac{242}{1654}\right) \cdot \left(\frac{1}{788} + \frac{1}{866}\right)}} \]\)

≈ -1.258

Step 3: Calculate the p-value using the standard normal distribution table for a two-tailed test.

To calculate the p-value, we need to find the probability that a standard normal distribution is less than or greater than the absolute value of the test statistic. Since the alternative hypothesis is two-sided (p1 ≠ p2), we will calculate the p-value as twice the probability of the test statistic being greater than the absolute value of the calculated z-value.

Using a standard normal distribution table or a statistical software, we find that the p-value is approximately 0.208.

Conclusion:

Since the p-value (0.208) is greater than the significance level (0.01), we fail to reject the null hypothesis. There is insufficient evidence to suggest that the proportion of voters who believe pharmaceutical companies invent diseases to make money is different for Democrats and Republicans.

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The volume is (4π/3) cubic units.

To find the volume of the solid bounded below by the circular paraboloid \(z = x^2y^2\)and above by the circular paraboloid\(z = 2 - x^2 - y^2\), we need to determine the region of integration and set up a triple integral.

First, let's find the intersection points between the two paraboloids. Equating the two equations, we have:

\(x^2y^2 = 2 - x^2 - y^2\)

Rearranging, we get:

\(2x^2 + 2y^2 = 2\)

Dividing by 2, we obtain:

\(x^2 + y^2 = 1\)

This equation represents a circle in the xy-plane centered at the origin with a radius of 1.

To set up the triple integral, we integrate over the region bounded by the circle. We can express the volume V as:

\(V = ∬R (2 - x^2 - y^2 - x^2y^2) dA\)

Where R represents the region of integration in the xy-plane.

To evaluate this integral, we can use polar coordinates since the region is a circle. Let r represent the radius and θ represent the angle.

The limits for r are from 0 to 1, and the limits for θ are from 0 to 2π, as we integrate over the entire circle.

The volume V can be calculated as follows:

\(V = ∫₀²π ∫₀¹ (2 - r^2 - r^2sin^2θ)\) rdrdθ

Simplifying and evaluating the integral, we get:

\(V = ∫₀²π [2r - (r^3/3) - (r^3sin^2θ/3)]|₀¹\)drdθ

\(V = ∫₀²π [(2/3) - (1/3)sin^2θ] dθ\)

Evaluating this integral, we find:

V = (4π/3) cubic units

Therefore, the volume of the solid bounded by the two circular paraboloids is (4π/3) cubic units.

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Answer:

68 in^2

Step-by-step explanation:

Answer:

-11

Step-by-step explanation:

Incomplete Question:

The content of the pie chart is as follows:

Hamsters  = 9% ; Snakes  = 10% ; Cats  = 23%

Birds  = 21% ;  Dogs  = 26% ;  Fish  = 11%

Answer:

The number of citizens who chose cat or fish is 47,600

Step-by-step explanation:

Given

Number of citizens = 140,000

Required

Determine the number of those that chose fish or cats

First, we need to calculate the percentage of those whose pets are either cats or fish

\(Percentage = Cat + Fish\)

Substitute 23% for cat and 11% for fish

\(Percentage = 23\% + 11\%\)

\(Percentage = 34\%\)

Next, is to multiply the calculated percentage by the number of citizens

\(Cat\ or\ Fish = Percentage * Number\ of\ Citizens\)

\(Cat\ or\ Fish = 34\% * 140000\)

\(Cat\ or\ fish = 47600\)

Hence, the number of citizens who chose cat or fish is 47,600

the number of citizens who chose cat or fish is 47,600

= Number of citizens × total percentage

\(= 140,000 \times (23\% + 11\%)\\\\= 140,000 \times 34\%\)

= 47,600

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Answer:

4x³

5y^5

Pls mark as brainliest

Answer:

B.14

Step-by-step explanation:

Goodluck guys sa sagot

Based on the histogram, it seems that the percentage of men with cholesterol levels above 220 is around 15%. To calculate this, we can look at the total area of the bars to the right of 220 and divide it by the total area of the entire histogram.

To be more specific, we can count the number of bars to the right of 220, which is 3. Each of these bars has a width of 5 and a height (frequency) of 4, 6, and 2 respectively. So the total area of these bars is 5 x (4 + 6 + 2) = 60.

The total area of the entire histogram is 5 x 20 = 100. Therefore, the percentage of men with cholesterol levels above 220 is (60/100) x 100 = 60%.

So the answer is not provided in the answer choices, but it would be closest to 60% based on the given histogram.
The histogram displays the distribution of serum cholesterol levels in milligrams per deciliter (mg/dL) for a sample of men. To determine the percentage of men with cholesterol levels above 220 mg/dL, you should examine the histogram and identify the relevant bars that represent cholesterol levels above 220 mg/dL. Then, calculate the number of men in these bars and divide it by the total number of men in the sample, and finally multiply the result by 100 to obtain the percentage.

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Answer:

2L+2W

Step-by-step explanation:

U JUST MOVE THE 2 TO THE L AND MOVE THE 2W TO THE OTHER SIDE. I THINK MY ANSWER IS RIGHT BUT MAYBE WAIT FOR ANOTHER PERSON

Confirmed Solution:

\(p=2l+2w\)

Hope this helps!

Based on the given information, the scale factor of the cuboid is 2.5.

What is the scale factor?

A scale factor is a number that represents the amount of magnification or reduction applied to an object, image, or geometrical shape. It is a ratio that describes how much larger or smaller an object is compared to its original size.

To find the scale factor of a cuboid, we need to compare the corresponding dimensions (length, width, and height) of the pre-image (original) and the image (after transformation).

Given that the length of the pre-image is 2 cm and the length of the image is 5 cm, we can find the scale factor as follows:

scale factor = length of image/length of pre-image

scale factor = 5 cm / 2 cm

scale factor = 2.5

Therefore, the scale factor of the cuboid is 2.5.

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Answer:

A quadrilateral is a parallelogram if and only if opposite angles are equal.

So, to make the quadrilateral a parallelogram, we can set the following equalities:

(4x + 13) deg = (5x - 12) deg

(4y + 7) deg = (3x - 8) deg

Solving the first equation,

4x + 13 = 5x - 12

x = -5

Solving the second equation,

4y + 7 = 3(-5) - 8

4y + 7 = -17

4y = -24

y = -6

So, the values of x and y that make the quadrilateral a parallelogram are x = -5 and y = -6

f(x) and g(x) are not closed under subtraction because when subtracted, the result will be a polynomial, the correct option is B.

A polynomial is a mathematical equation that solely uses the operations addition, subtraction, multiplication, and non-negative integer exponentiation of variables. Variables are sometimes known as indeterminate in mathematics. Majorly used polynomials are binomial and trinomial.

Given f(x) and  g(x) two polynomial functions in the standard form of the polynomial,

According to Closure Property, when something is closed, the output will be the same as the input.

The polynomials f(x) and g(x) can be seen in the image.

On subtracting the two polynomials, the output will be a polynomial and so it is closed under subtraction.

Therefore, The reason why f(x) and g(x) are not closed under subtraction is that the outcome of subtraction will be a polynomial, making option B the best choice.

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Complete question: