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3 years ago

Solve for w.

Mathematics

1 answer:

kherson [118]3 years ago

7 0

Answer:

w = 2 or w = -2

Step-by-step explanation:

-9|w| = -18

divide by -9 on both sides

w = 2 negative 2 works also

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Eli wants to combine 0.5 gallon of a 10% acid solution with some 35% acid solution to make a 15% acid solution. How much of the

emmainna [20.7K]

Answer:

<h3> 0.125 galon of 35% acid solution</h3>

Step-by-step explanation:

0.5 gallon of a 10% acid solution

10%•0.5 = 0.05 gallon of acid in that solution

x gallon of 35% acid solution

35%•x = 0.35x gallons of acid in that solution

0.05 + 0.35x total of gallons of acid in both solutions

(0.5+x) gallons of 15% acid solution

15%(0.5+x) = 0.15(0.5+x) gallons of acid in that solution

the amount of gallons of acid didn't change after mixing, so:

0.05 + 0.35x = 0.15(0.5 + x)

0.05 + 0.35x = 0.075 + 0.15x

0.35x - 0.15x = 0.075 - 0.05

0.2x = 0.025

×5 ×5

x = 0.125

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3 years ago

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WILL GIVE MOST BRAINLIEST!!

Colt1911 [192]

Answer:259

Step-by-step explanation:

Its summation of 6^i-1 for values of I = 1,2,3 and 4

= 6^0 + 6^1 +6^2 +6^3

=259

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3 years ago

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A phone carrier charges an extra fee if a customer uses more than 700 minutes each month. Karina has already used 200 minutes th

garik1379 [7]

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Step-by-step explanation:

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3 years ago

Translate the sentence into an inequality. Eight times the sum of a number and 20 is greater than or equal to 25. Use the variab

PtichkaEL [24]

Answer:

8x + 20 ≥ 25

Step-by-step explanation:

Well 8 times the sum of a number "x" plus 20,

So we can write the following,

8x + 20

and that should be greater than or equal to 25

8x + 20 ≥ 25

<em>as an inequality it is 8x + 20 ≥ 25.</em>

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<em>Hope this helps :)</em>

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3 years ago

What is the measure of X?

vlabodo [156]

Answer:

The answer is B.

Step-by-step explanation:

Given that the total angles in a triangle is 180° so in order to find the value of x, you have to substract 60° and 80° from 180° :

$60 + 80 + x = 180$

$140 + x = 180$

$x = 180 - 140$

$x = 40$

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3 years ago

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