3 years ago

Bruh what is (-4×-6)-4²

Mathematics

1 answer:

olga nikolaevna [1]3 years ago

6 0

Answer:

Step-by-step explanation:

the anwser is you use the formal

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3 years ago

9. What is the solution to this equation? 2x + 10 = 28 help

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3 years ago

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3 years ago

How do you figure this out? I am having a hard time. The variables x and y are related to proportionally. When x = 8, y = 20. Fi

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3 years ago

By driving 8 mph faster than Bob, John can make a 230 mile trip in one half hour less. How fast does Bob drive on the trip? Roun

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Answer: The speed of Bob is 56.8 km/hr.

Step-by-step explanation:

Let the speed of Bob be 'x'.

Let the speed of John be 'x-8'.

Distance covered = 230 miles

time = $1\dfrac{1}{2}=\dfrac{3}{2}\ hr$

According to question, we get that

$\dfrac{230}{x}-\dfrac{230}{x+8}=\dfrac{3}{2}\\\\230\dfrac{x+8-x}{x(x+8)}=\dfrac{3}{2}\\\\\dfrac{230\times 8}{x^2+8x}=\dfrac{3}{2}\\\\\dfrac{1840}{x^2+8x}=\dfrac{3}{2}\\\\1840\times 2=3x^2+24x\\\\3680=3x^2+24x\\\\3x^2+24x-3680=0\\\\x\approx 56.8\ km/hr$

Hence, the speed of Bob is 56.8 km/hr.

6 0

3 years ago

Bruh what is (-4×-6)-4²​

Bruh what is (-4×-6)-4²