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2 years ago

What is b(x)= 3x−16 5x−5 If b = 7

Mathematics

1 answer:

baherus [9]2 years ago

5 0

Answer:

it is in the equation

Step-by-step explanation:

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2 years ago

Read 2 more answers

An express train travels 80km/h from Ironton to Wildwood. A local train, traveling at 48km/h, takes 2 hours longer for the same

masha68 [24]

Answer:

They are 240 kilometers apart.

Step-by-step explanation:

This question can be solved using the following relation:

$v = \frac{d}{t}$

In which v is the velocity, d is the distance and t is the time.

An express train travels 80km/h from Ironton to Wildwood.

Here we have $v = 80, t = x$ . So

$v = \frac{d}{t}$

$80 = \frac{d}{x}$

$d = 80x$

A local train, traveling at 48km/h, takes 2 hours longer for the same trip.

This means that when $v = 48, t = x + 2[tex]. So[tex]v = \frac{d}{t}$

$48 = \frac{d}{x+2}$

Since $d = 80x$

$48 = \frac{80x}{x+2}$

Applying cross multiplication

$80x = 48(x + 2)$

$80x = 48x + 96$

$32x = 96$

$x = \frac{96}{32}$

$x = 3$

So the distance is:

$d = 80x = 80*3 = 240$

They are 240 kilometers apart.

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2 years ago

If a dog weighs 240 ounces, how many grams does the dog weigh?

agasfer [191]

Answer: If the dog weighed 240 ounces it would weigh 6803.89 grams

Step-by-step explanation:

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3 years ago

Which expressions show repeated multiplication? Check all that apply.

gtnhenbr [62]

O(7)(7)(7)(7)

O(9)(9)(99)(9)(9)

(2)(3)4(5)(6)

(1)(9)

AHO

7 0

3 years ago

What is b(x)= 3x−16 5x−5 ​ If b = 7

What is b(x)= 3x−16 5x−5 If b = 7