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3 years ago

Write two subtraction equations to show how to find 15 - 7

Mathematics

2 answers:

pantera1 [17]3 years ago

5 0

15-7=8
i hope it helps

Neporo4naja [7]3 years ago

3 0

15-8=7
15-7=8

these the to equations

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What is f–1(8)??<br><br> Please select the best answer

notka56 [123]

Answer:

$f^{-1}(8)=\frac{3}{2}$

Step-by-step explanation:

Given f(x)= $2x+5$

We have to find $f^{-1}(8)$

In order to find $f^{-1}(x)$ we have to make x as the subject of the formula

Let us assume f(x)=y

⇒ $2x+5=y$

Subtracting both sides by 5

$2x+5-5=y-5$

$2x=y-5$

Dividing both sides by 2

$\frac{2x}{2}=\frac{y-5}{2}$

⇒ $x=\frac{y-5}{2}$

Now substituting y with x

we have $f^{-1}(x)=\frac{x-5}{2}$

Now $f^{-1}(8)=\frac{8-5}{2}$

= $\frac{3}{2}$

So option (ii) is correct

5 0

2 years ago

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Which angle is a corresponding angle to 8?

marta [7]

Answer:

angle 1 (the last option)

Step-by-step explanation:

hope this helps!

3 0

2 years ago

A company has 2 photocopy machines. The probability that machine A will breakdown on a given day is 2%. The probability that mac

pickupchik [31]

Answer: 95.55%

--------------------------------

Work Shown:

A = event that copier A breaks down
B = event that copier B breaks down

P(A) = probability that copier A breaks down
P(A) = 2% = 0.02

P(B) = probability that copier B breaks down
P(B) = 2.5% = 0.025

P(neither break down) = (1-P(A))*(1-P(B))
P(neither break down) = (1-0.02)*(1-0.025)
P(neither break down) = 0.9555
P(neither break down) = 95.55%

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2 years ago

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12345 [234]

Answer:

The first graph, upper left corner

Step-by-step explanation:

Linear means line so choose the graph with a straight line

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3 years ago

Simplify 3x^2x 4x^5 please help