MATHEMATICS MIDDLE SCHOOL

Emily is a very good student. She is more likely to attend class than to miss class. Which could be t.he probability that she misses class tomorrow?a. -0.4
b. 0.1
c. 0.7
d. 1.2
(PLEASE EXPLAIN HOW YOU RECEIVED YOUR ANSWER)

Answers

Answer 1
Answer: The correct answer is 0.1. C and D can automatically be eliminated because Emily is a good student who is likely to attend school. This leaves A and C, but A can be eliminated because there is still a possibility Emily will miss class.

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Please help!!


Find the inverse of y=7x-10. Is the inverse a function?

Answers

Answer: f^(-1) (x) = (x+10)/(7)

Step-by-step explanation:

To find the inverse , all we need do is to make x the subject of the formula.

y = 7x - 10

Add 10 to both sides

y + 10 = 7x

divide both sides by 7

Therefore:

x = y + 10 / 7 , that is

f^(-1) (x) = (x+10)/(7)

Answer:

Step-by-step explanation:

y=7x-10  calculate x :  7x-10 =y

7x = y+10

x = 1/7 y +10/7

the inverse of y=7x-10 is ; y = 1/7 x +10/7

What is the median of these numbers?
4, 18, 20
A 8
® 12
© 14
0 18

Answers

Answer:

18

Step-by-step explanation:

The middle number of the sequence us the median

A violin was on sale of 50% off. The sale price
is $50. What was the original price?

Answers

Let us assume the original price of the violin to be = x
Sale price of the violin after discount = $50
Percentage of discount given on the violin = 50%
The
(50/100) * x = 50
x/2 = 50
x = 50 * 2 dollars
   = 100 dollars
So the original price of the violin was $100. I hope the procedure is clear enough for you to understand. You can always use this procedure for solving similar problems without the necessity of taking any external help.
The violin is 50% off so 1/2 off so you would do reverse operation so the price would double to get back to its original form so the original price is 100$

A bright blue parallelogram is painted on a playground. It has a height of 16 feet and a length of 23 feet. If one gallon of paint covers 175 square feet, how many gallons of paint are needed?

Answers

Answer:3 gallons of paint

Step-by-step explanation:multiply 23 times 16 and then divide by 175.

What is the value of v? 2/9v + 4 - 2/3v = 5

Answers

2/9v + 4 - 2/3v = 5
2/9v  - 2/3v = 5 - 4
2/9v - 6/9v = 1
-4/9v = 1
v = 1 (-9/4)
v = -9/4
v = -2 1/4
the answer is v= -44/135

What is 30% in decimal form

Answers

.30. Just move the decimal to the left two places.
To find 30% in decimal form, you do:
30/100=0.3
30% in decimal form is 0.3
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