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3 years ago

F 20% of a number is 35, what is 50% of that number?

Mathematics

2 answers:

frez [133]3 years ago

7 0

We have an equation: 35/?= 20/50

Cross multiply:
20*?= 35*50
⇒ ?= 35*50/20= 87.5

The final answer is 87.5~

Otrada [13]3 years ago

4 0

20% is same as 0.2

0.2 (x) = 35
--------- ----
0.2 0.2

x = 175

50% is same as 0.5

0.5 (175)
=87.5

The answer is 87.5

I hope this answer helped you.
Have a wonderful day!!

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Colt1911 [192]

This is the Pythagorean theorem where the 2 legs of a triangle squared add up to equal the squared hypotenuse (a^2 + b^2 = c^2)

The equation would be
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3 years ago

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Step-by-step explanation:

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2 years ago

-3 x - 5 = 36. What is X?

Black_prince [1.1K]

Answer:

x = -13,67

Step-by-step explanation:

-3x - 5 = 36

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3 years ago

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Alex73 [517]

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Range: (-infinity,infinity)
as x goes to infinity y goes to: infinity
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3 years ago

Answers for the 2 boxes please:)

masha68 [24]

Answer:

(5,-5)

Step-by-step explanation:

Eliminate y-term

$(2x + 5x) + ( - 3y + 3y) = 25 + 10 \\ 7x = 35 \\ x = \frac{35}{7} \\ x = 5$

We can eliminate x-term but for this system of equations, eliminating y-term is faster.

Substitute x = 5 in any given equations.

I will choose to substitute in the first equation.

$2x - 3y = 25 \\ 2(5) - 3y = 25 \\ 10 - 3y = 25 \\ 10 - 25 = 3y \\ - 1 5 = 3y \\ 3y = - 15 \\ y = - 5$

Answer Check

Substitute both x-value and y-value in any given equations

$2x - 3y = 25 \\ 2(5) - 3( - 5) = 25 \\ 10 + 15 = 25 \\ 25 = 25$

The equation is true. (It is better to check both the answer for both equation.)

Thus the answer is (5,-5)

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3 years ago