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3 years ago

NO LINKS PLEASE!

Mathematics

2 answers:

Nookie1986 [14]3 years ago

8 0

Answer:

Set this up as a proportion.

54/n = 75/100

Now solve for n and finish from here.

Can i also have brain or a heart :)

Lina20 [59]3 years ago

6 0

Answer:

x would equal 72

Step-by-step explanation:

you can find a percent but there is already a percent showing. So the answer should be 72.

When you're trying to find the answer to these problems you should check if there is a percent part and whole. In this question, there is already a percent and a part so you would just try to find the whole.

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Marissa has a yard service to help people in her neighborhood. She earns $15 for each lawn she mows, $10 for each yard she weeds

sashaice [31]

Answer:

100-47=53 so 53$ profit

Step-by-step explanation:

5 0

3 years ago

David likes to enter bike races on weekends. He can bike 42 ½ miles in 2 ½ hours. How many miles can he ride in just one hour? g

Rudiy27

Answer:

17 miles in 1 hour

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers

The sum of 2 numbers is 48 and their difference is 24

Artemon [7]

Answer:

The numbers are 12 and 36

Step-by-step explanation:

x + y = 48

x - y = 24

Add y to both sides of the equation

x = 24 + y

Substitute new value for x into first equation

24 + y + y = 48

Add y's together

24 + 2y = 48

Subtract 24 from both sides of the equation

2y = 24

Divide both sides of the equation by 2

y = 12

48 - 12 = 36

The numbers are 12 and 36

Hope this helps :)

4 0

3 years ago

Given ABC find the values of x and y. In your final answer, include all of your calculations.

kow [346]

So with this, we will be using proportions. To solve for x, our proportion will be $\frac{x}{6} =\frac{6}{x-9}$

Firstly, cross-multiply: $x^2-9x=36$

Next, subtract 36 on both sides: $x^2-9x-36=0$

Next, replace -9x with 3x-12x $x^2+3x-12x-36=0$

Next, factor x^2+3x and -12x-36 separately: $x(x+3)-12(x+3)=0$ . After, rewrite it as $(x-12)(x+3)=0$

Next, solve for x separately in the two parentheses:

$x-12=0\\ x=12$

$x+3=0\\ x=-3$

Since we can't have a negative length, x = 12.

To solve for y, our proportion will be $\frac{y}{9} =\frac{12}{y}$

Firstly, cross-multiply: $y^2=108$

Next, just square root each side, and your answer will be (rounded to hundredths) $y=10.39$

In short, x = 12 and y = 10.39.

5 0

3 years ago

Whats the answer to this?

marysya [2.9K]

Answer:

$(x+2)(x+3)$

Step-by-step explanation:

Use the sum-product pattern

$x^2+5x+6$

$x^2+3x+2x+6$

Common factor from the two pairs

$x^2+3x+2x+6$

$x(x+3)+2(x+3)$

Rewrite in factored form

$x(x+3)+2(x+3)$

$(x+2)(x+3)$

4 0

3 years ago