Answer:
The fourth answer is correct.
Step-by-step explanation:
Answer:
D
Step-by-step explanation:
how to simplify this 5x^2 -3 (x + 2) - 2x
i need help
can you look over this picture and see what the answer is
Answer:
AC = 12
Step-by-step explanation:
If BC is parallel to DE then ∠D ≅ ∠B and ∠E ≅ ∠C. Therefore
ΔABC is similar to ΔADE.
The sides of smaller triangle are in proportion with sides of bigger triangle.
Therefore we have the equation:
AC/AE = AB/AD
Substitute the given numbers:
x/x+15 =8/18
18x= 8(x+15)
18x = 8x+120
10x = 120
x = 12
AC=12
Find the surface area of the cylinder. (SHOW ALL WORK)d = 12 m20 m
To find the surface area of a cylinder, the formula is.
\(\text{Surface Area = 2}\pi rh+2\pi r^2\)Where diameter, d, and height, h, is given below as,
\(\begin{gathered} d=12m \\ h=20m \end{gathered}\)Where radius, r, is half of the diameter,
\(\begin{gathered} r=\frac{d}{2},\text{ where d =12m} \\ r=\frac{12}{2}=6m \end{gathered}\)Substituting for r and h into the surface area formula above,
\(\begin{gathered} \text{Surface Area =2}\pi rh+2\pi r^2=2\pi r(h+r) \\ \pi\text{ is taken as 3.14} \\ =2(3.14)(6)\lbrack20+6\rbrack=37.68\times26=979.68m^2 \end{gathered}\)Hence, the surface area of the cylinder is 979.68m²
You have 400ft400ft of fencing to construct a rectangular pen for cattle. What are the dimensions of the pen that maximize the area
evaluate the expression for x=-3 Thank you
\( {x}^{2 } - 2x + 4\)
Answer: 7
Step-by-step explanation:
3 x 3 = 9 - 2(3)+4
9-6+4
=7
Rafe and Sebastian both rode in a 5 mile bike race. There were so many riders that they started groups at different times. Rafe started the race at 3:30 PM and finished the race at 4:00 PM. Sebastian started the race at 4:25 PM and finished at 4:53 PM. What was the speed, in miles per hour, of the boy who rode at a faster rate? Round to the nearest tenth if necessary.
Answer:
10.7 miles/hour
Step-by-step explanation:
So let's first write all the known for the question
total race = 5 mile
Rafe time 3:30~4:00pm
Sebastian time 4:25~4:53 pm
Then let's find out how much time rafe and sebastian took for races in hours and who took less time(who's faster)
Rafe time 30 min = 0.5 hours
Sebastian time 28 min = 0.467 hours
0.467 < 0.5 hours
-Hence Sebastian had faster speed.
Now let's calculate the speed of Sebastian
5 mile/0.467 hours= 10.714
Round to nearest tenth
10.7 miles/hour
For a function to be inverse, it must be
Answer:
look at the explanation
Step-by-step explanation:
for f(x) and g(x) to be inverse,
f(g(x))=g(f(x))=x
Consider the following figure.
(Note that the figure is not drawn to scale.)
20°
L
47°
89°
Order the side lengths IK, KL, IJ, IL, and LJ from least to greatest.
The side lengths from least to greatest as follows:
IK < KL < IJ < IL < LJ
To order the side lengths IK, KL, IJ, IL, and LJ from least to greatest, we can analyze the given figure.
Since the figure is not drawn to scale, we cannot determine the exact lengths of the sides. However, we can make some observations based on the given angles.
Let's analyze the angles:
Angle L: Since angle L is marked as 47°, we know that side KL is the shortest side, as it is opposite to the smallest angle in a triangle.
Angle I: Since angle I is marked as 20°, we can infer that side IJ is longer than side IK, as it is opposite to a larger angle.
Angle LJ: Since angle LJ is marked as 89°, we can conclude that side LJ is the longest side, as it is opposite to the largest angle in the triangle.
Based on these observations, we can order the side lengths from least to greatest as follows:
IK < KL < IJ < IL < LJ
For such more questions on Side Length Order Analysis
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Solve using the standard algorithm check your coordinates and remainder by using multiplication and addition 99 divided 8
Answer:
12 with a remainder of 3
Step-by-step explanation:
hope this helps
TRIGONOMETRY (RIGHT ANGLE) PLEASE HELP
Answer:
x = 41.05
Step-by-step explanation:
Given that,
In a right angles triangle,
Perpendicular height, P = 228
Angle 1 = 90°
Angle 2 = 47°
Angle 3 = 180-(90+47) = 43°
Using trigonometry to find x.
\(\sin\theta=\dfrac{P}{x}\\\\x=\dfrac{P}{\sin\theta}\\\\x=\dfrac{28}{\sin(43)}\\\\x=41.05\)
So, the value of x is equal to 41.05.
Find the area of the saved region. The graph depict IQ scores of adults, and those scores are normally distributed with a mean of 100 and a standard deviation of 15. 91
The area of the shaded region is 0.725746882.
What is a cumulative distribution function?The probability distribution of random variables is described using the cumulative distribution function. The probability for a discrete, continuous, or mixed variable may be described using it. The cumulative probability for a random variable is calculated by adding the probability density function.
Given:
The graph depicts the IQ scores of adults, and those scores are normally distributed with a mean of 100 and a standard deviation of 15. 91.
From the diagram,
the critical value is 91.
The formula to calculate the z-score is,
z = (x - u) / s,
Substituting the given values to the formula,
the given values are;
x = critical value = 91
u = mean = 100
s = standard deviation = 15
Thus,
z = (x - u) / s
z = -0.6
P(z > -0.6 ) = 0.725746882
Therefore, the area is 0.725746882.
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What is the exponent for the expression?
PLSS I REALLY NEED HELP WITH THIS ONEE
Answer:
6^7
Step-by-step explanation:
What percent of widowed students or female
So, there are 5 widowed people (3+2) and there are 3 females in the widowed category. So:-
3/5*100 = 60%
Help please I will give brainlest
Two tailors, Zoe and Wanda, sit down to do some embroidery. Zoe can embroider 2 shirts per hour, and Wanda can get through 6 shirts per hour. In addition, the tailors had previously finished some shirts. Zoe has already completed 14 shirts, and Wanda has completed 6 shirts. Zoe and Wanda decide to take a break when they have finished the same total number of shirts. How long will that take? How many shirts, in total, will each tailor have finished?
After 2 hours, Zoe and Wanda will complete the same total number of shirts.
Each tailor will finish 18 shirts.
What is linear equation?
An algebraic equation of the form y=mx+b is referred to as a linear equation. m is the slope, and b is the y-intercept, and all that is involved is a constant and a first-order (linear) term. The variables in the preceding equation are y and x, and it is occasionally referred to as a "linear equation of two variables."
Given that,
Zoe can embroider 2 shirts per hour, and Wanda can get through 6 shirts per hour. Zoe has already completed 14 shirts, and Wanda has completed 6 shirts.
Assume that after x hours they have finished the same total number of shirts.
The number of shirts that Zoe finished is
Z(x) = 14 + 2x ....(i)
The number of shirts that Wanda finished is
W(x) = 6 + 6x ...(ii)
When they make same number of shirts, then Z(x) = W(x)
14 + 2x = 6 + 6x
6 + 6x = 14 + 2x
Subtract 2x from both sides:
6x - 2x = 14 - 6
4x = 8
Divide both sides by 4
x = 8/4
x = 2.
Putting x = 2 in Z(x) = 14 + 2x:
Z(2) = 14 + (2×2)
Z(2) = 18
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subtract x-3 from 3-x + 4
Answer:
-2x + 10
Step-by-step explanation:
3 - x + 4 - (x - 3)
1. Combine like terms:
-x + 7 - (x - 3)
2. Apply the distributive law - (a - b) = -a + b :
-x + 7 -x + 3
3. Combine like terms:
-2x + 10
hope this helps!
Based on the graph, which inequality is correct for a number that is to the right of -4?
A number line is shown from negative 8 to 8 at increments of 1. A circle is shown at negative 4. The entire portion of the number line to the right of negative 4 is shaded.
2 < −4
Answer:
yo- ehm I think itssss 2 > -4
Step-by-step explanation:
Jamie bought 15 apples. He ate 3 apples. What percentage of the apples did Jamie eat?
18%
20%
45%
50%
Answer:
The percentage Jamie ate is 20%.
Step-by-step explanation:
To find our answer we will first divide 100 by 15 and we get 6.666666666666667. Now multiply it by it by 3 and we get 20%. Therefore, 20% is our answer.
On a scale drawing with a scale of 3 cm : 2 m, the height of a tree is 6 cm. How tall is the actual tree?
Answer:
4 m
Step-by-step explanation:
Answer:
4m
Step-by-step explanation:
PLEASE HELP!!!! I WILL GIVE BRAINLIEST TO PEOPLE THAT CAN HELP ME ANSWER THIS
Answer:
In the beginning, there is 60 L of water in the bathtub. The water drains out from the bathtub at 2.5 L per minute. How many minutes does it take until all of the water is drained out?
Zero of the function: (24, 0)
The value 24 min represents the number of minutes it takes for the water to completely drain out from the bathtub.
Step-by-step explanation:
Zero of the function is when y=0
0 = 60 -2.5 x
x = 24
The college student senate is sponsoring a spring break Caribbean cruise raffle, with proceeds going to the local homeless shelter. A local travel agency donated the cruise, worth an estimated $3000. The students sold 2900 tickets at $5 per ticket. Find the mathematical expectation of a student who purchases 10 tickets.
Answer:
The mathematical expectation of a student who purchases 10 tickets is -$39.65.
Step-by-step explanation:
A student that purchases 10 tickets out of 2900 has a probability of winning the cruise that can be calculated as:
\(p=10/2900\approx0.00345\)
Each ticket cost $5, so he has spent $50 for the 10 tickets.
Then, the expected value of this operation is equal to the expected value of the earnings (probability of winning the prize multiplied by the value of the prize), minus the costs:
\(E(X)=p\cdot R-C\\\\E(X)=0.00345\cdot3000-50=10.35-50=-39.65\)
The mathematical expectation of a student who purchases 10 tickets is -$39.65.
HELP ASAP, FIRST ANSWER GETS BRAINLIEST,
Polygon JKLM is drawn with vertices J(−4, −4), K(−4, −6), L(−1, −6), M(−1, −4). Determine the image coordinates of K′ if the preimage is reflected across y = −7.
K′(−4, −4)
K′(−4, −5)
K′(−4, 6)
K′(−4, −8)
The image coordinates of K′ if the preimage is reflected across y = −7 is (-4, -8)
How to determine the image of the coordinates KBased on the given question, we have certain variables that can be utilized for our calculations.
K = (-4, -6)
First, find the equation of the reflection line
The reflection line is y = -7.
This can be expressed as
y = a = -7
The image of the reflection is then calculated as
K' = (x, -(y + 2|a|))
Replace the given or established values in the equation mentioned earlier, resulting in the following expression
K' = (-4, -(-6 + 2 * 7))
Evaluate
K' = (-4, -8)
Hence, the image coordinates of K′ are (-4, -8).
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This is due today, please help me out and show me how you did it!!
The area of the rectangular figure with two semicircles on the opposite side is 36.56 sq cm.
What are the circumference and diameter of a circle?The circumference of a circle is the distance around the circle which is 2πr.
The diameter of a circle is the largest chord that passes through the center of a circle it is 2r.
Given, A rectangle with two semicircles on two opposite sides.
The length of the rectangle is 6cm and the width of the rectangle is 4cm.
The two given semicircles have a diameter of 4cm seems obvious.
∴ The area of the total figure is an area of the rectangle added to the area of 2 semicircles which makes up to a circle with a radius 2 cm.
∴ (4×6) + π(2)² sq cm.
= 24 + 4π sq cm.
= 24 + 12.56 sq cm.
= 36.56 sq cm.
The area which is not taken up in the rectangle and two circle questions are
(area of the rectangle - 2 times the area of a circle).
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Solve for x. I attached the question. Pls help me :(
Answer:
x = 16°
Step-by-step explanation:
What we know:
∠JML = 47°
∠JKL = (7x + 21)°
∠JML is an inscribed angle
∠JKL is an inscribed angle
Inscribed angles are half of the value of their intercepted arc
So if m∠JML = 47° then mArc JL is double that or 94°
And ∠JKL is intercepted by Arc JML which is the rest of the circle not intercepted by ∠JML so
mArc JL + Arc JML = 360°
94 + Arc JML = 360
Subtract 94 from both sides to isolate Arc JML
Arc JML = 266°
So if Arc JML = 266° then it's intercepted inscribed angle is half of that.
Arc JML ÷ 2 = ∠JKL
266 ÷ 2 = ∠JKL
133 °= ∠JKL
Now we can use this value and set it equal to the expression to find the value of x
(7x + 21) = 133
Subtract 21 from both sides to isolate the x
7x = 112
Divide both sides by 7
x = 16
40 POINTS PLEASE HELP ASAP YOU CAN SAVE MY LIFE WILL GIVE BRANLIEST
Which expression is equivalent to 8\sqrt(6)
A.\sqrt(14)
B.\sqrt(48)
C.\sqrt(96)
D.\sqrt(384)
Answer:
D. \sqrt(384)
Step-by-step explanation:
All you have to do is to expand the root the way I have done. I hope you understand and rate this answer well.
Don't forget 8 is the same as root(8) * root(8) which will give root(64) and the square root of 64 is 8.
A model of a railroad car has a Scale Ratio of 1:87.1. If the model railroad car is 1.4 in high, how
tall is the actual railroad car?
Please answer this for me quick it’s due on Monday for me!!!
Answer:
The scale ratio of 1:87.1 means that for every 1 unit of measurement on the model (in this case, inches), there are 87.1 units of measurement on the actual railroad car. This means that the actual railroad car is 87.1 times larger than the model in every dimension. If the model is 1.4 inches tall, the actual railroad car would be 1.4 x 87.1 = <<1.4*87.1=122.54>>122.54 inches tall.
a = 1/3 find the value of expression 6a + 4
Answer:
6
Step-by-step explanation:
1/3 times 6 = 2
2 + 6 = 6
angle d is a vertical angle to angle f. The measure of angle d is 53 degrees. What is the measure of angle f?
Answer:
53 degrees
Step-by-step explanation:
Answer:
53
Step-by-step explanation:
Angle D = Angle F as they are vertical angles :)))
How do I do 11 divided by 132
Answer:
Step-by-step explanation:
We have the equation:
11 ÷ 132 = 0.083333
Calculated to 6 decimal places.
0 0. 0 8 3 3 3 3
1 3 2 1 1. 0 0 0 0 0 0
− 0
1 1
− 0
1 1 0
− 0
1 1 0 0
− 1 0 5 6
4 4 0
− 3 9 6
4 4 0
− 3 9 6
4 4 0
− 3 9 6
4 4 0
− 3 9 6
4 4
Ed bought cupcakes for his sister's birthday party.42 cupcakes had sprinkles on top. The other 33 cupcakes did not have sprinkles. What percentage of the cupcakes had sprinkles?
Answer:50000000000000000000000000000000000000000000000000000