MATHEMATICS HIGH SCHOOL

Jacob invested $300 in a savings account and earned $81 in interest at the end of 9 years. What was the interest rate?

A.
3%

B.
3.5%

C.
4%

D.
4.5%

Answers

Answer 1
Answer: r = (1/t)(A/P - 1)

r = (1/9)((300/81) - 1)
Reduce the expression by cancelling the common factors.
r=(1/9)(100/27−1)

Combine 100/27 and −1 using a common denominator.
r=(1/9)(100−1⋅27/27)

Simplify the numerator.
r=(1/9)(73/27)

r = 0.30041152

converting r decimal to a percentage
R = 0.30041152 * 100 = 30.0412%/year

A. 3%
Answer 2
Answer:

Answer:

3%

Step-by-step explanation:

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If x - 11 = 20, then x = ?

Answers

Answer:

31

Step-by-step explanation:

x-11=20

X=20+11

therefore X =31

PLS MARK ME AS THE BRAINLIEST

What is the volume of a sphere with the radius of 2 cm?

Answers

V=43πr3=43·π·
3≈33.51032 =33.51 is the answer
Short Answer: 33.5cm3. 

Longer Answer: The formula for volume of a sphere is ( 4 * pi * radius^3) / 3. So, when the radius is 2cm, then it would be ( 4 * 3.14 * 2^3) / 3. We have to do the exponents first, so 2 ^ 3 is 2 * 2 * 2 = 8. Then, we solve the rest of the expressions within the bracket, which will give us ( 100.48 ) / 3, and that equals 33.5

What number is 27% of 52

Answers

The number which is 27 percent of the number 52 is 14.04.

To find the number that is 27% of 52, we use the concept of finding a percentage of a number,

To calculate 27% of 52, we convert 27% to decimal form by dividing 27 by 100, resulting in 0.27,

Next, we multiply 0.27 by 52;

⇒ 0.27 × 52 = 14.04,

Therefore, 27% of 52 is approximately 14.04. This means that 14.04 represents 27% of the total value of 52. By converting the percentage to decimal form and multiplying it by the number, we find the value of a given percentage of a quantity.

Learn more about Percent here

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27\%*52=(27)/(100)*52=0.27*52=14.04\n\n27\%\ of\ 52\ is\ 14.04.

Answer and maybe an explanation.Thanks in advance.

Answers

inverses

solve for x
replace x with f inverse
replace y with x



so
first minus 2 both sides
y-2=√(2x-3)
square both sides
y^2-4y+4=2x-3
add 3 to both sides
y^2-4y+7=2x
divide both sides y 2
(y^2-4y+7)/2=x

x turns to f inverse and y turns to x


f(x)⁻¹=(x^(2)-4x+7)/(2)


looks like they didn't want to expand the binomial

y=\frac{(x-2)^(2)}+3}{2}
answer si A

Perform the indicated operation. 5/4 + 7/9

Answers

Answer:

Step-by-step explanation:

45/36 + 28/36 = 73/36 =  2  1/36

Answer:

12/13

Step-by-step explanation:

5+7=12

4+9=13

so the answer is 12/13. I hope that helps

Which solid figure has six vertices?

Answers

A triangular prism has six vertices.
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