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3 years ago

What’s the inverse equation? And how you solved it step by step please!

Mathematics

1 answer:

Korvikt [17]3 years ago

7 0

Answer:

The inverse is (x^2-5)/2

Step-by-step explanation:

y =sqrt(2x+5)

Exchange x and y

x = sqrt(2y+5)

Solve for y

Square each side

x^2 = (sqrt(2y+5))^2

x^2 = 2y+5

Subtract 5 from each side

x^2 -5 = 2y-5+5

x^2 -5 = 2y

Divide each side by 2

(x^2-5)/2 = 2y/2

(x^2-5)/2 = y

The inverse is (x^2-5)/2

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2b. Jill and Alice each sold 40 pieces of

Diano4ka-milaya [45]

Answer:

Jill sold more apples

1 more than Alice

Step-by-step explanation:

Jill sold 40 fruits

Alice sold 40 fruits

15% of Jill's sales is APPLES, that is:

15/100 = 0.15

0.15 * 40 = 6

Jill sold 6 apples.

Now, it is given Alice sold 5 apples.

<em>Who sold more? Of course, Jill.</em>

<em>By how much? 6 - 5 = 1 apple more</em>

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3 years ago

Zach read a book for 10 minutes every weekend in the first month, 20 minutes in the second month, 40 minutes in the third month,

san4es73 [151]

Victoria's method is linear because the number of minutes increase by an equal number (15) every month.

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3 years ago

Question 6 of 10

puteri [66]

Answer:

A and C the other two are just stand alone numbers. so the answers are A and C

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3 years ago

Choose the inequality below that x=0 is a solution to.

krok68 [10]

remember: a filled dot means it includes that point and an empty dot means it doesn't

A. has empty dot at 0 so x=0 is not incuded in the solution

B. has filled dot at x=0 so x=0 is a solution

C. has empty dot at 0 so x=0 is not incuded in the solution

D. the line doesn't even go over x=0 so not a solution

answer is B

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3 years ago

What is the conclusion of the statement in the box below?

Nady [450]

Answer:

Step-by-step explanation:

x²=4

x=√4

X1=2

X2=-2

6 0

2 years ago