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3 years ago

Anyone know how to do this??

Mathematics

1 answer:

Ray Of Light [21]3 years ago

6 0

Answer:

Step-by-step explanation:

Call high street is a, using Pythagorean Theorem we have:

x^2 = 4 + a^2

b^2 = a^2 + 36

64 = x^2 + b^2

so we have x^2 = 16, a^2 = 12, b^2 = 48

so x= 4

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Answer:

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2 years ago

It takes 99 apples to make 9 pies. How many apples would it take to 4 pies? (Hint simplify your ratio first)

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Answer:

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Step-by-step explanation:

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3 years ago

The sum of two numbers is 126 and their difference is 42. what are two numbers

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Answer:

Step-by-step explanation:

$x,\ y-numbers\\\\\text{The system of equations:}\\\\\underline{+\left\{\begin{array}{ccc}x+y=126\\x-y=42\end{array}\right}\qquad\text{add both sides of the equations}\\.\qquad2x=168\qquad\text{divide both sides by 2}\\.\qquad x=84\\\\\\\text{Put the value of}\ x\ \text{to the first equation:}\\\\84+y=126\qquad\text{subtract 84 from both sides}\\y=42$

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3 years ago

Helen got a $7 reduction in the price of a pair of jeans that are normally $32. What is the approximate percent decrease in the

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3 years ago

Read 2 more answers

You and your friend mix water and cirtic acid. You add 3 cups of citrtic acid for every 16 cups of water Your friend adds 2 cups

Vlad [161]

Answer:

A's mixture is more acidic.

Step-by-step explanation:

Given:

Two friends mix water and citric acid.

One (Let A) add 3 cups of citric acid for every 16 cups of water and another (Let B)adds 2 cups of citric acid for every 12 cups of water.

Now, we have to find that whose mixture is more acidic means:-

Solution:

A add 3 cups of citric acid for every 16 cups of water, the ratio = $\frac{3}{16}$

B adds 2 cups of citric acid for every 12 cups of water = $\frac{2}{12}$

Now, to find that who mix more citric acid in the mixture, firstly we will equalize the denominator of both fraction by taking LCM so that can be compare easily.

LCM of 16 and 12:- <u>48</u>

16 - 16, 32, <u>48</u>, 64, 80, 96....

12 - 12, 24, 36, <u>48, </u>60, 72.......

For friend A - $\frac{3\times3}{16\times3} =\frac{9}{48}$

For friend B - $\frac{2\times4}{12\times4} =\frac{8}{48}$

<em>We found that in terms of 48 cups of water, friend A mixes 9 cups of acid while friend B mixes 8 cups of acid, means A is adding more acid than B and</em> hence friend A's mixture is more acidic.

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3 years ago