All categories

3 years ago

Please help me solve this, I will give you Brainliest.

Mathematics

2 answers:

Galina-37 [17]3 years ago

7 0

Answer:

$\boxed{4y - 7}$

Step-by-step explanation:

→ Take away 7

7 -

→ From 4 times y

→ Put the two terms together

4y - 7

nadezda [96]3 years ago

6 0

<h3>That means to subtract 7, from 4 times of 'y' .</h3>

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A number is decreased by 40% to 525. what is the original amount?

zhenek [66]

Answer:

875

Step-by-step explanation:

lets assume the original amount X

the new amount = X - ( X × 40% )

525 = (60 × X) ÷ 100

X = ( 525 × 100 ) ÷ 60

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2 years ago

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PLEASE HELP ASAP!!!!! a simulation by tossing a coin to model whether these puppies will be male or female. • Let heads (H) = fe

weeeeeb [17]

Answer:

7/10 or 70%

Step-by-step explanation:

There has to be at least two T in each result of the simulation. This means you can also have 3 T's and 4 T's in the result.

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1. TTTT, 2. TTTT, 3. THTH, 4. HTTT, 5. TTTT, 7. HTHT, 9. THTH

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1 year ago

The length of each side of an equilateral triangle is increased by 20%, resulting in triangle ABC. If the length of each side of

kompoz [17]

Answer: Area of ΔABC is 2.25x the area of ΔDEF.

Step-by-step explanation: Because equilateral triangle has 3 equal sides, area is calculated as

$A=\frac{\sqrt{3} }{4} a^{2}$

with a as side of the triangle.

Triangle ABC is 20% bigger than the original, which means its side (a₁) measures, compared to the original:

a₁ = 1.2a

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$A_{1}=\frac{\sqrt{3} }{4}(1.2a)^{2}$

$A_{1}=\frac{\sqrt{3} }{4}1.44a^{2}$

Triangle DEF is 20% smaller than the original, which means its side is:

a₂ = 0.8a

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$A_{2}=\frac{\sqrt{3} }{4} (0.8a)^{2}$

$A_{2}=\frac{\sqrt{3} }{4} 0.64a^{2}$

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$\frac{A_{1}}{A_{2}} =$ 2.25

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2 years ago

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Gekata [30.6K]

Answer:

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Step-by-step explanation:

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2 years ago

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