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3 years ago

Explain why solving (2/5)c = (8/9) by multiplying both sides by (5/2) is the same as solving it by dividing both sides by (2/5)

1 answer:

3 0

Dividing by a fraction is the same as multiplying by its reciprocal. So dividing by 2/5 will give you the same answer as multiplying by 5/2.

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Of the runners in a marathon through Northeastern Pennsylvania, 94.12% finished the race. If 2,125 runners started the race, how

aliya0001 [1]

Multiply 2,125 by 0.9412 and you get 2000.05 but you cant have 0.05 of a runner to 2,000

6 0

3 years ago

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Find the length of the hypotenuse

Darina [25.2K]

Answer:

The Hypotenuse is side just opposite to the right angle.

Step-by-step explanation:

By Pythagoras' theorem,

c^2=a^2+b^2

c^2(hypotenuse to be found)= 30^2+ 16^2

c^2=1156

Therefore, c ( i.e. the hypotenuse) will be the square root of 1156.

The square root of 1156 is 34.

<h2>Thus, c ( hypotenuse) = 34</h2>

Hope it helped :)

3 0

3 years ago

2. Standard form: 8x + y = 9 Slope-intercept form:

Effectus [21]

Answer:

y = - 8x + 9

Step-by-step explanation:

The equation of a line in slope- intercept form is

y = mx + c

Given

8x + y = 9 ( subtract 8x from both sides )

y = - 8x + 9 ← in slope- intercept form

6 0

4 years ago

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Given that f(x) = x2 + 4x – 21 and g(x) = x - 3, find f(x) · g(x) and

jolli1 [7]

9514 1404 393

Answer:

(f·g)(x) = x^3 +x^2 -33x +63

Step-by-step explanation:

The product of the two functions can be found using the distributive property.

$f(x)\cdot g(x)=(x^2+4x-21)\cdot(x-3)\\\\=(x^2+4x-21)(x)+(x^2+4x-21)(-3)\\\\=x^3+4x^2-21x-3x^2-12x+63\\\\\boxed{(f\cdot g)(x)=x^3 +x^2-33x+63}$

8 0

3 years ago

Plz help fast will mark brainliest

Semenov [28]

Answer: -270

Step-by-step explanation:

First, simplify the exponent

$-6*(25+20)$

Then, distribute

$-150+-120$

Then, subtract(add a negative)

$-270$

Hope it helps <3 :)

6 0

3 years ago

Read 2 more answers