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3 years ago

Help me help me help me help me

Mathematics

1 answer:

madreJ [45]3 years ago

8 0

Answer:

12.56%

Step-by-step explanation:

Total Area = bh = 10*10 = 100 square units.

Area of the red circle = $\pi r^2=3.14\cdot 2^2=12.56\:$ square units.

$\frac{12.56}{100}\cdot 100\%=12.56\%$

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Let x △ y be defined by x △ y=x−5y. What is the value of 3 △ (−4)

TEA [102]

$x\Delta y=x-5y\\\\3\Delta(-4)\qquad\text{put the values x = 3 and y = -4 to the expression x - 5y}:\\\\3\Delta(-4)=3-5(-4)=3+20=23$

5 0

3 years ago

Pls help asap I will mark brainlist

Luba_88 [7]

<u>Answer</u>:

A. y = $\frac{-2}{3}x$ + 3

<u>Explanation</u>:

slope: $\frac{y2-y1}{x2-x1}$

: $\frac{1-3}{3-0}$

: $\frac{-2}{3}$

equation: y - y1 = m( x - x1 )

y - 1 = $\frac{-2}{3}$ ( x - 3 )

y = $\frac{-2}{3}x$ + 3

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2 years ago

how do i solve this equation, it is like terms. Please help! struggling with this just as much as i am in life. -9 - (12 - 3x)

sattari [20]

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5 0

3 years ago

Read 2 more answers

10n^{2} - 12 = -8<br> Please help

torisob [31]

The value for n is $\frac{\sqrt{10} }{5}$

<h3>solving for n</h3>

<u>given data</u>

10n^{2} - 12 = -8

making n the subject of the formula

10n^{2} = -8 + 12

10n^{2} = 4

divide through by 10

n^{2} = 4 / 10

finding the square root of both sides

n = square root ( 4 / 10 )

$n = \sqrt{\frac{4}{10}$

n = 0.632 or $\frac{\sqrt{10} }{5}$

Read more the subject of formula here: brainly.com/question/21140562

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7 0

2 years ago

By what percent change if the numerator is decreased by 10% and the denominator is decreased by 70%

hjlf

Answer:

It increases x3.

Step-by-step explanation:

Let's say the fraction to begin with was 100/100. Ignore the fact that it isn't fully reduced and it is an improper fraction.

10% of 100 is 10, so the numerator is now 90 (decrease=get smaller; 100-10=90).

70% of 100 is 70, so the denominator is now 30 (decrease=get smaller; 100-70=30).

Our fraction is now 90/30 which, when fully reduced, equals 3.00. Since 100/100 equals 1.00, it has increased by 2.00 (3x bigger).

6 0

3 years ago