In ΔQRS, m∠R = 57°, q = 9, and s = 5. Find the area of ΔQRS.
The area of ΔQRS is 26.10 square units.
What is triangle?
A triangle is a closed, two-dimensional geometric shape with three straight sides and three angles.
To find the area of \($\triangle QRS$\), we can use the formula:
\($Area = \frac{1}{2} \times base \times height$\)
where the base and height are the length of two sides of the triangle that are perpendicular to each other. We can find these sides using trigonometry.
First, we need to find the length of side \($QR$\). We can use the Law of Cosines:
\($QR^2 = QS^2 + RS^2 - 2(QS)(RS)\cos(R)$\)
where \($R$\) is the angle at vertex \($R$\). Substituting the given values, we get:
\($QR^2 = 9^2 + 5^2 - 2(9)(5)\cos(57^\circ)$\)
\($QR \approx 8.02$\)
Next, we need to find the height of the triangle, which is the perpendicular distance from vertex \($R$\) to side \($QS$\). We can use the sine function:
\($\sin(R) = \frac{opposite}{hypotenuse}$\)
\($\sin(57^\circ) = \frac{height}{8.02}$\)
\($height \approx 6.51$\)
Now we can find the area of the triangle:
\($Area = \frac{1}{2} \times QR \times height$\)
\($Area = \frac{1}{2} \times 8.02 \times 6.51$\)
\($Area \approx 26.10$\) square units
Therefore, the area of \($\triangle QRS$\) is approximately \($26.10$\) square units.
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suppose y varies directly as x, and y=48 when x=6. find x when y=72.
Using the constant of proportionality the value of x when y is 72 is 9.
What is a COP?
The ratio between two quantities that are directly proportional is the constant of proportionality. When two quantities grow and shrink at the same rate, they are directly proportional.
If y varies directly as x, it means that y can be expressed as a constant multiple of x, i.e., y = kx, where k is the constant of proportionality.
To find k, we can use the given information that y = 48 when x = 6 -
y = kx
48 = k(6)
k = 8
Now that we know k, we can use it to find x when y = 72 -
y = kx
72 = 8x
x = 9
Therefore, when x = 72, the value of x = 9.
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y=3x-5
6x+3y=15
what is the value of y in the following system
y=3x - 5....(i)
6x+3y=15.....(ii)
Then,
Keeping value of y in (ii)equation;
or,6x+3(3x-5)=15
or,6x+9x-15=15
or,15x=15+15
or,x=30/15
:x=2
Now, Keeping value of x in (i) equation;
y= 3x-5
or, y= 3×2 - 5
or,y= 6-5
: y=1
write an expression in factored form for the polynomial of least possible degree graphed below.
i’m confused because when i’m trying to find « a » i end up getting 0 and i feel i’m doing something wrong. thank you!!
Answer:
- 1/64 (x+4)² (x-3) (x-4) = 0
Step-by-step explanation:
f(x) = a (x+4)²(x-3)(x-4) ... curve touch (-4,0) and not cross x axis
x=0 f(x) = -3
a (4)² * (-3) * (-4) = -3
a = - 1/64
- 1/64 (x+4)² (x-3) (x-4) = 0
Gary's daily jogging track is 0.9 miles long. In how many days will she have covered a distance of 27 miles?
Answer:
30 days.
Step-by-step explanation:
27 ÷ 0.9 = 30.
Answer:
in 30 days she will reach 27 miles.
Step-by-step explanation:
27 miles / 0.9 miles = 30 days
solve
(3x) 9 = (4x) 5
Answer:
4 = 1x
Step-by-step explanation:
(3x)9 = (4x)5
9 = (1x) 5
4 = 1x
A ski hat is priced at $19.50 and a pair of ski boots are priced at $85.50. If the sales tax rate is 7%, then what is the total cost of the ski hat and ski boots ?
Answer:
The total cost of the ski hat and the ski boots is $112.35.
Step-by-step explanation:
First, we need to add the prices of the ski hat and the ski boots.
85.50 + 19.50 = $105
Now, we need to find 7% of $105, and then add it to the total.
105 x 0.07 = $7.35
105 + 7.35 = $112.35
Therefore, the total cost of the ski hat and the ski boots is $112.35.
Hope this helps! :D
Answer needed immediately. pleaseeeee
A box contains 7 red, 8 white and 3 blue identical balls. If three balls are drawn at random from the box without replacement, calculate the probability that;
i) two are red and 1 is blue
ii) at least 2 are white
iii) 1 of each colour is drawn.
The probability that;
i). two are red and 1 is blue is 0.0257
ii). at least 2 are white is 0.1144
iii). 1 of each colour is drawn is 0.0343
Probability of an event without replacementThe probability of an event without replacement implies that once an item is drawn, then we do not replace it back to the sample space before drawing another item.
Total possible outcome = 3 + 7 + 8 = 18
i). probability that two are red and 1 is blue = 7/18 × 6/17 × 3/16
probability that two are red and 1 is blue = 7/272
probability that two are red and 1 is blue = 0.0257
ii). probability that at least 2 are white = 8/18 × 7/17 × 7/16 + 8/18 × 7/17 × 3/16
probability that at least 2 are white = 70/612
probability that at least 2 are white = 0.1144
iii). probability that 1 of each colour is drawn = 7/18 × 8/17 × 3/16
probability that 1 of each colour is drawn = 7/204
probability that 1 of each colour is drawn = 0.0343
Therefore, the probability that; two are red and 1 is blue, at least 2 are white and 1 of each colour is drawn are approximately 0.0257, 0.1144 and 0.0343 respectively.
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Can someone help me with the rest of the problem?
Answer:
outliner =211
Step-by-step explanation:
mean =71,84,85,85,91,211
721 divided by 6= 1216 ( its going to keep on going)
median =3 bc (88-85=3)
mode=85
range=140
mean w/o outliner=102
Real-life Problems Question 10
Answer :
a) It is given that
Everyday a machine makes 500000 staples and puts them into the boxes.
The machine need 170 staples to fill a box
One box contans = 170 staples.
Total number of staples = 500000
Number of box required to fill 500000 staples = Total number of staples/No. of staples 1 box contains.
\( \: :\implies \) 500000 /170
\( :\implies \: \) 2941 (approx)
Therefore, 2941 boxes are required to fill with 500000 staples.
b) It is given that,
Each staple is made of 0.21 g of metal .
Total weight of metal = 1 kg = 1000 g
1 staple = 0.21 g
Number of staples = weight of metal/ Weight of 1 staple.
\( \: :\implies \) 1000/0.21
\( \: :\implies \) 4761 (approximately)
Therefore, 4761 staples can be made from 1 kg of the metal.
PLEASE HELP WILL GIVE BRAINLIEST
The value of n that satisfies the given polynomial expression is 10
Simplifying a polynomial expressionFrom the question, we are to determine determine the corresponding value of n in the simplified expression.
The given expression is
(12x⁵ + 6x³ + x) - (x + 26)(2nx² + 1)
First, we will simplify this expression
(12x⁵ + 6x³ + x) - (x + 26)(2nx² + 1)
(12x⁵ + 6x³ + x) - (2nx³ + x + 52nx² + 26)
(12x⁵ + 6x³ + x - 2nx³ - x - 52nx² - 26)
Simplify further
(12x⁵ + 6x³ - 2nx³ - 52nx² - 26)
(12x⁵ + (6 - 2n)x³ - 52nx² - 26)
By comparison with (12x⁵ - 14x³ - 520x² - 26)
(6 - 2n)x³ = - 14x³
and
- 52nx² = - 520x²
Solve (6 - 2n)x³ = - 14x³ for n
(6 - 2n)x³ = - 14x³
6 - 2n = - 14
6 + 14 = 2n
20 = 2n
n = 20/2
n = 10
Similarly,
Solve - 52nx² = - 520x² for n
52n = 520
n = 520/52
n = 10
Hence, the value of n is 10
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What percent of the front page is taken up by the
prom story, including the prom photograph?
A. 20%
B. 22%
C. 25%
D. 45%
E. 60%
The percent of the front page taken up by the prom story is 20%
Calculating the percent of the front page taken up by the prom storyFrom the question, we have the following parameters that can be used in our computation:
The front page
From the front page, we have
Area front page = 5 * 4
Area front page = 20
Also, we have
Prom = 2 * 2
Prom = 4
So, we have
Percentage = 4/20 * 100%
Evaluate
Percentage = 20%
Hence, the percent of the front page taken up by the prom story is 20%
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A chemical injection system tank is 3/4 full and pumps out at a rate of 1/8 of a tank per week. You won't be back for five weeks. How much will be left in the tank when you return? Your answer should be in the form of a fraction reduced to its lowest terms.
the following pair of triangles are similar. find the value of x 10 x x+2 x+14
The numerical value of x in the similar pair of triangle is 10.
What is the numerical value of x?A ratio is simply the relation between two amounts showing how many times a value is contained within another value.
From the diagram,
Side A of the small triangle = 10
Side B of the small triangle = x + 2
Side A of the Big triangle = 10 + x
Side B of the big triangle = x + 14
Hence;
Ratio of Side A to Side B of the small triangle = 10 / x + 2
Ratio of Side A to Side B of the Big triangle = 10 + x / x + 14
Since the triangle area similar, equate the two ratio and solve for x.
10 / ( x + 2 ) = ( 10 + x ) / ( x + 14 )
Cross multiply
10( x + 14 ) = ( 10 + x )( x + 2 )
Expand using FOIL method
10x + 140 = 10x + 20 + x² + 2x
10x + 140 = x² + 12x + 20
x² + 12x + 20 = 10x + 140
x² + 12x + 20 - 10x - 140 = 0
x² + 2x - 120 = 0
Factor the left side of the equation
( x - 10 )( x + 12 ) = 0
Hence;
x - 10 = 0 and x + 12 = 0
x = 10 and x = -12
Since the dimension of the triangle cannot be negative,
x = 10
Therefore, the value of x is 10.
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1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 QUESTION 1 [24] Gavin Pillay is employed at Maritzburg Engineering, a Steel manufacturing company in Pietermaritzburg. Below is a copy of his Payslip. 1. 3201 Company Maritzburg Engineering cc 21 Halsted Road Pietermaritzburg Employment No 105 Id Number Income Basic Salary Overtime M Gross Salary Maritzburg Engineering cc Employee Name Gavin Pillay Period 31/05/2023 Sex Male 790128514088 R8700 R1200 A Status Married Deductions PAYE UIF Total Deductions Net Pay 1200 87 B C Name the Employee? What does UIF stand for? Show by calculation that the UIF paid by Gavin is calculated correctly Which month is this Payslip for? Calculate the missing values A to C How old is Gavin this year? Give the address of Gavin's work place. Gavin would like to contribute towards a Pension fund (7,5% of his Basic Salary). H would this affect his net salary?
If Gavin contributes towards a Pension fund (7,5% of his Basic Salary), then his net salary will be reduced by the amount he contributed towards pension fund i.e. R652.5.
1.1 Name of employee is Gavin Pillay. 1.2 UIF stands for Unemployment Insurance Fund. UIF is a benefit to provide short-term relief to workers who lose their jobs, or can't work due to illness, maternity or adoption leave. 1.3 The UIF paid by Gavin is calculated correctly.
Firstly, we need to calculate Gross Salary of Gavin, which is given as: Basic Salary + Overtime + M = R8700 + R1200 + R3201 = R13101Then, calculate total deductions from gross salary.
Total Deductions = PAYE + UIF = R1200 + 87 = R1287Hence, Gavin's net salary = Gross salary - Total Deductions = R13101 - R1287 = R11814Therefore, UIF paid by Gavin is calculated correctly as R87.1.4 This payslip is for the month of May i.e.
31/05/2023.1.5 Basic salary of Gavin = R8700. Deduct 7.5% of his basic salary to calculate his pension fund contribution. Pension Fund Contribution = 7.5/100 x R8700 = R652.5.1.6
Total deductions of Gavin includes PAYE, UIF and pension fund contribution.
Therefore, Total Deductions = PAYE + UIF + Pension Fund Contribution = R1200 + R87 + R652.5 = R1939.5.1.7
Gavin's age can not be determined as his date of birth is not provided.1.8 Address of Gavin's workplace is 21 Halsted Road, Pietermaritzburg?
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On a number line, point C is at 8, and the midpoint E of CD is at -3.
Point D is at
on the number line.
Answer: C
Step-by-step explanation:
Point D is at -14 on the number line.
How to determine the midpoint of a line segment?In Mathematics, the midpoint of a line segment with two end points can be calculated by adding each end point on a line segment together and then divide by two (2).
Since E is the midpoint of line segment CD, we can logically deduce the following relationship:
Line segment CD = Line segment C + Line segment D
Midpoint E = (point C + point D)/2
By substituting the given points into the equation above, we have the following:
-3 = (8 + D)/2
-6 = 8 + D
D = -6 - 8
D = -14
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8. A fee-based loan is one type of loan that you may encounter. Many payday/title businesses and pawn shops charge you a set fee for borrowing money from them. This fee can make it difficult to know what interest rate you are really paying.
Lucille takes her car to a title loan business to borrow some money. She is given $1500. She must pay $300 in addition to the $1500 from the loan in 6 months. What simple interest rate is she being charged?
Lucille is being charged a simple interest rate of 0.4, or 40%.
To determine the simple interest rate Lucille is being charged, we can use the formula for simple interest:
Interest = Principal × Rate × Time
In this case, the principal (P) is $1500, the time (T) is 6 months (or 0.5 years), and the total amount to be paid back (A) is $1500 + $300 = $1800. We need to find the rate (R).
Interest = Principal × Rate × Time
$300 = $1500 × R × 0.5
Simplifying the equation:
$300 = $750R
To isolate R, we divide both sides of the equation by $750:
$300 / $750 = R
0.4 = R
Therefore, Lucille is being charged a simple interest rate of 0.4, or 40%.
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A package states that there are 60 calories in 12 crackers and 75 calories in 15 crackers. Since the relationship is
proportional, how many calories are there in 180 crackers?
x х
12
15
y
60
75
36 calories
108 calories
720 calories
900 calories
PLEASE HELP QUICK!!
At a price of $180 there is demand for 2520 items and a supply of 1440 items. At a price of $330 there is demand for 1470 items and a supply of 2640 items. Assuming supply and demand are linear, find the equilibrium price and quantity.
Assuming supply and demand are linear, the equilibrium price is equal to $252 and the equilibrium quantity is equal to 2,016 items.
What is a linear function?A linear function can be defined as a type of function whose equation is graphically represented by a straight line on the cartesian coordinate.
First of all, we would determine a linear function for both supply and demand by finding the slope using this formula as follows:
\(Slope,\;m = \frac{Change\;in\;y\;axis}{Change\;in\;x\;axis}\\\\Slope,\;m = \frac{y_2\;-\;y_1}{x_2\;-\;x_1}\)
Note: price (p) in dollars would be the output and quantity (q) would be the input.
For supply, the points include the following:
Points (p, q) = (1,440, 180).Points (p, q) = (2640, 330).Slope, m = (330 - 180)/(2640 - 1440)
Slope, m = 150/1200
Slope, m = 1/8.
Next, we would find the y-intercept at (1,440, 180):
p = qm + c
180 = 1/8(1440) + c
180 = 180 + c
c = 0.
Therefore, the supply equation is p = q/8.
For demand, the points include the following:
Points (p, q) = (2,520, 180).Points (p, q) = (1,470, 330).Slope, m = (330 - 180)/(1,470 - 2,520)
Slope, m = 150/-1,050
Slope, m = -1/7.
Next, we would find the y-intercept at (2,520, 180):
p = qm + c
180 = -1/7(2,520) + c
180 = -360 + c
c = 180 + 360.
y-intercept, c = 540.
Therefore, the demand equation is p = -q/7 + 540.
In order to find the equilibrium price and quantity, we would set the supply equal to the demand:
q/8 = -q/7 + 540
Multiplying all through by 56, we have:
7q = -8q + 30,240
15q = 30,240
q = 30,240/15
Equilibrium quantity, q = 2,016 items.
For the equilibrium price, we have:
p = q/8
p = 2,016/8
Equilibrium price, p = $252.
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ANYONE GOOD AT MATH PLEASE HELP! SHOW YOUR WORK TOO PLEASE I BEG OF U
what is the approximate diameter of a sphere with a volume 34 cm the third power?
Answer:
Diameter = 4cm________________Step-by-step explanation:
volume = 34cm³
volume = 4/3×π×radius³
34cm³ = 4/3 × 3.14 × radius³
34cm³ = 12.56/3 × radius³
radius³ = 34×3/12.56
radius³ = 8
radius = ³√8
radius = 2cm
diameter = 2×radius
= 2×2
= 4cm
________________FOLLOW ME PLEASE
5
4
3
2
please help will give brainlyest
these are the answer choices
thank you
Answer:
3
Step-by-step explanation:
Answer:
x=3
Step-by-step explanation:
PLEASE MARK BRAINLIEST
The value of 3x10 when x.- 2. can be
written
in simplest form as ab, where
and b =
Answer:
A=-8 and B=-2
Step-by-step explanation:
Each side length of a triangle is 4 cm. What type of triangle is it?
☐ right
□acute
Equilateral
Isosceles
Answer: Equilateral
Step-by-step explanation:
It's equilateral because it says that each side of the triangle is 4cm. In simple words, all the sides of triangle are equal. Such a triangle is called an equilateral triangle.
Hope you understood.
describe the steps to determining and graphing a translation.
Answer:
A TRANSLATION OF A GRAPH is its rigid movement, vertically or horizontally. On the left is the graph of the absolute value function. On the right is its translation to a "new origin" at (3, 4). y = |x|.
PLEASE HELP MEEEEE!!!!!!!!!
Answer:
Value of slope is -2 and y-intercept is 1
Step-by-step explanation:
We can see that the values in the table have a linear relationship.
A linear function is a straight line written as:
y = mx+b
Here,
m is the slope and b is the y-intercept
The slope is calculated by:
\(m = \frac{y_2-y_1}{x_2-x_1}\)
We can take any two consecutive pairs in the table to calculate the slope.
Taking first two input-output pairs.
(x1,y1) = (-3, 7)
(x2,y2) = (-2, 5)
Putting the values
\(m = \frac{5-7}{-2+3}\\m= -2\)
Putting the value of m in the general form
\(y = -2x+b\)
To find the value of b, we will put any pair of input-output (x,y) in the equation
Putting the first pair
\(7 = -2(-3) +b\\7 = 6 + b\\b = 7-6\\b = 1\)
Hence,
Value of slope is -2 and y-intercept is 1
What are the coordinates of the point on the directed line segment from (-7,-9) to (-5,7) that partitions the segment into a ratio of 1 to 3
9514 1404 393
Answer:
(-6.5, -5)
Step-by-step explanation:
The first point is weighted by the length of the second segment, and vice versa.
P = (3A +1B)/(3+1)
P = (3(-7, -9) +(-5, 7))/4 = (-21-5, -27+7)/4 = (-6.5, -5)
Answer:
The top guy seems correct to me
Step-by-step explanation:
salesperson earns $345 for selling $2300 in merchendice find the commison rate
Answer:
The commission rate is 15%
Step-by-step explanation:
commission = commission rate x sales
where the commission rate is expressed as a decimal.
In this case, the salesperson earned a commission of $345 for selling $2,300 in merchandise. Therefore, we have:
345 = commission rate x 2300
To solve for the commission rate, we can divide both sides by 2300:
commission rate = 345/2300
Simplifying this expression, we get:
commission rate = 0.15
So, the commission rate is 15%
1000000000000 = 4*10?
Answer:
No
Step-by-step explanation:
if your asking is 10 to the power of 4 is 1000000000000, it is not. 10 to the power of 4 is 10000
What is the smallest number by which you have to multiply the product 3 x 4 x 5 x 11 x 15 to get
a perfect square number? *
Answer:
11
Step-by-step explanation:
The prime factorization of the given product is ...
3 × 2^2 × 5 × 11 × 3·5 = 2^2 × 3^2 × 5^2 × 11
The factor required for this to be a perfect square is 11.
_____
Check
3·4·5·11·15 = 9900 ≈ 99.499^2
9900·11 = 108,900 = 330^2 . . . a perfect square number