MATHEMATICS HIGH SCHOOL

The equation y=19x relates proportional quantities x and y. What is the value of x when y is 4? Enter your answer in the box

Answers

Answer 1
Answer:

(4)/(19)
Answer 2
Answer:

Answer: 4=1/9x

Step-by-step explanation:

4*9/1=36

x=36

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3/7 of what number = 21

Is 4/8 greater or less than 3/4

Answers

Less than because 1/2 is smaller than 3/4
4/8 simplifies to 1/2, and 1/2 is 0.5.

3/4 as a decimal is 0.75.

0.5 is less than 0.75, so 4/8 is less than 3/4.

40% of a number equals the difference between the number and 10

Answers

x-0.4x=x-10

2x=9.6

x=4.8

4.8 is x

Step-by-step explanation:

1. What is the value of the digit 7 in the number 176 354?​

Answers

Answer:

tens of thousands

Step-by-step explanation:

Answer:

7 thousand because in word it is 0me hundred and seventy six thousand three hundred and fifty four

Suppose a city with population 500,000 has been growing at a rate of 7% per year. If this rate continues, find the population of this city in 11 years.

Answers

use compound interest formula.........m

Answers to 1-6 please :)

Answers

Question 1:
Perimeter = 18ft
area = 15ft²
Question 2:
Perimeter = 11m
Area = 7.5m²

The inverse of the function f(x) = x + 10 is shown.h(x) = 2x –

What is the missing value?

Answers

we have

f(x) = (1)/(2)x + 10

Step 1

Let

y=f(x)

y = (1)/(2)x + 10

Exchange the variable x for y and variable y for x

x = (1)/(2)y + 10

Clear variable y

Multiply by 2 both sides

2x = y + 20

y = 2x-20

Let

f(x)^(-1) =y

f(x)^(-1)=2x-20

therefore

the answer is

the inverse of the function is f(x)^(-1)=2x-20

the missing value is 20

Answer:

The Given function is

y= x + 10

To find the inverse of function , we use the following procedure

x=y-10

Now, replace x by y and y by x, we get the inverse of function

y=x -10 , is the inverse of the function, y=x+10.

As, it is given that inverse of f(x) is h(x)

Also, h(x)= 2 x - k-------(1)

Inverse of f(x)=x+10 is ,y= x-10, that is 2 y=2 x- 20------(2)

Comparing 1 and 2, gives

h(x)=2 y

-k=-20

k=20
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