What is 64 ÷ (15 - 7) x2 - 9 using pemdas

Mathematics

2 answers:

Licemer1 [7]2 years ago

7 0

Answer:

Step-by-step explanation:

Hope this helps. Pls give brainliest.

soldier1979 [14.2K]2 years ago

5 0

Answer:

8x^2−9

Step-by-step explanation:

Hope I helped

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What is the inverse of this function

just olya [345]

G(x) = (25 - x)/5     First lets call g(x) by its other name - y

y = (25 - x)/5         Now switch the x and y

x = (25 - y)/5        Solve for y which is now the inverse - call this $g^{-1}(x)$

5x = 25 - y
y = 25 - 5x      this is the inverse so $g^{-1}(x)$ = 25 - 5x

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3 years ago

Whats -3u + 5 if u=2

ivann1987 [24]

Answer:

-1

Step-by-step explanation:

-3(2) = -6 + 5 = -1

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2 years ago

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The equation Y equals 4/10 X describes the number of kilometers y that a van travels in x minutes. What is the constant speed of

Mekhanik [1.2K]

Answer:

$\frac{4}{10}=0.4$ kilometers per hour.

Step-by-step explanation:

We have been given an $y=\frac{4}{10}x$ , which describes the number of kilometers y that a van travels in x minutes. We are asked to to find the constant speed of the van in terms of hours.

We can see that van travel $\frac{4}{10}x$ kilometers in x hours. To find the constant speed of van, we will substitute $x=1$ in our given equation as:

$y=\frac{4}{10}(1)$

$y=\frac{4}{10}$

Since van travels $\frac{4}{10}$ kilometers in one hour, therefore, constant speed of van is $\frac{4}{10}$ kilometer per hour or $0.4$ kilometers per hour.