MATHEMATICS HIGH SCHOOL

Kate wants to have $25,000 in 16 years. How much does she need to invest if the interest rate is 6 percent per year?A.) $10,431.63
B.) $9,841.16
C.) $7,353.88

Answers

Answer 1
Answer:

Answer:

its b

im on plato and got it right
Answer 2
Answer: I'm guessing that its c

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The quotient of a number and 3 is decreased by 121. The result is -164.

Answers

quotient of number and 3 decreased by 121 is -164
change them to equations

121 - (n)/(3) = - 164
- (n)/(3) = -285
- n = -855
n = 855

check:
121 - (855)/(3) = -164
121 - 285 = -164
-164 = -164

Find the average rate of change from x = 7 to x = 14 for the function f(x) = 0.01(2)^x and select the correct answer below. 23.22
35.84
128
163.84

Answers

Answer: 23.22


Step-by-step explanation:

Given function: f(x)=0.01(2)^x

At x=7

f(7)=0.01(2)^7=1.28

At x=14

f(14)=0.01(2)^(14)=163.84

We know that the rate of change from x_1 to  x_2 of function is given by

=(f(x_2)-f(x_1))/(x_2-x_1)

Therefore, The rate of change of given function from x=7 to x=14

=(f(14)-f(7))/(14-7)\n\n=(163.84-1.28)/(14-7)\n\n=(162.56)/(7)\n\n=23.22

Therefore, the average rate of change from x = 7 to x = 14 for the given function is 23.22

Answer:

the answer is 23.22

Step-by-step explanation:

Please answer this question.1m of ribbon costs £3.20. find the cost of 1 and 1/4 m

Answers

\begin{array}{ccc}1m&-&\£3.20\n\n1(1)/(4)m&-&x\end{array}\n-------------\nmultiply\ on\ the\ cross\n-------------\n1\cdot x=1(1)/(4)\cdot3.20\n\nx=1.25\cdot3.20\n\nx=4\n\nAnswer:\£4.00

The ages of Raju and Ravi are in the ratio 3:4 .Four years from now the ratio of their ages will be 4:5 . Find their present ages.

Answers

Answer:

Age of Raju = 12

Age of Ravi = 16

Step-by-step explanation:

Let the Ages of Raju and Ravi be 3x and 4x years

According to question, (3x+4)/(4x+4) = (4)/(5)

⇒ 5(3x+4)=4(4x+4)

⇒ 15x+20 = 16x+16

⇒ 15x−16x=16 - 20

⇒ −x = −4

⇒ x = 4

Age of Raju = 3 × 4 = 12

Age of Ravi = 4 × 4 = 16

HOPE IT HELPS!!

Answer:

raju=16 years

Ravi=20 years

Step-by-step explanation:

raju =4×4=16

Ravi=5×4=20

Expand it please
(2/7z-3/5x)2

Answers

Answer:   \bold{(4)/(49)z^2-(12)/(35)xz+(9)/(25)x^2}

Step-by-step explanation:

\bigg((2)/(7)z-(3)/(5)x\bigg)\bigg((2)/(7)z-(3)/(5)x\bigg)\n\n\n=(2)/(7)z\bigg((2)/(7)z-(3)/(5)x\bigg)-(3)/(5)x\bigg((2)/(7)z-(3)/(5)x\bigg)\n\n\n=(4)/(49)z^2-(6)/(35)xz-(6)/(35)xz+(9)/(25)x^2\n\n\n=(4)/(49)z^2-(12)/(35)xz+(9)/(25)x^2

Determine if the lines that pass through the given points are parallel, perpendicular or neither. Line A: (-3, 5) and (0, 7) Line B: (6, 2) and (9, 4)

Answers

If two lines are parallel, their slopes will be equal. If they are perpendicular, the slope of the first line multiplied by the slope of the second line will equal 1. If they are neither, they won't have any special relationship.

Line A:
Slope = (7 - 5)/(0 - -3), which is equal to 1/3

Line B:
Slope = (4 - 2)/(9 - 6), which is also equal to 1/3.

The two slopes are the same, therefore they are parallel.
It is parallel due to the fact that it is the exact same number with one being positive and one being negative.
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