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2 years ago

Five boxes of crackers cost $9.at this rate how much do 20 boxes cost

Mathematics

2 answers:

Papessa [141]2 years ago

8 0

Answer:36$

Step-by-step explanation:So what you have to do is divide 20 by 5 and you get 4.Then multiply 4 by 9 and you answer is 36.

just olya [345]2 years ago

5 0

Find how much 1 box costs by dividing.

9 ÷ 5 = 1.80

Now, multiply 1.80 by 20.

1.80 × 20 = 36

<h2>Answer:</h2>

<u>20 boxes of cookies costs </u><u>$36</u><u>.</u>

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Jamie owns about 3 times as much books as Carly. Jamie owns 42 books write an equation and use it to estimate the number n of bo

Marina CMI [18]

Answer:

Carly owns 14 books.

Step-by-step explanation:

42/3= 14

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2 years ago

Jillian is trying to save water, so she reduces the size of her square grass lawn by 8 feet on each side the area of the smaller

horsena [70]

Answer: 20 feet by 20 feet.

Step-by-step explanation:

1. You know that $x$ is the original measure of one side. Since it is a square, all its sides are equal.

2. Therefore, to solve the problem you only need to solve for $x$ , as you can see below:

- You have that:

$(a-b)^{2}=a^{2}-2ab+b^{2}$

- Then, you obtain the following quadratic equation:

$(x-8)^{2} =144\\x^{2}-2(x)(8)+8^{2}=144\\x^{2}-16x-80=0$

- Apply the Quadratic formula to solve it:

$x=\frac{-b+/-\sqrt{b^{2}-4ac}}{2a}\\a=1\\b=-16\\c=-80$

- Then, you obtain:

$x_1=20\\x_2=-4$

3. The dimensions cannot be negative, therefore, the answer is: 20 feet by 20 feet.

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3 years ago

Read 2 more answers

What do i point on the graph ?

ehidna [41]

Answer:

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2 years ago

The lifespan of a monarch butterfly is about 9 months. Assuming a 30-day month, how many minutes old is the butterfly?

Artyom0805 [142]

Answer:

So 9 months is 273 days and 394200 minutes so if the butterfly spends 30 days means one month so it is 43800 minutes old .

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Step-by-step explanation:

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2 years ago

What addition sentence helps you find 5 – 4?

sineoko [7]

Answer:

4 + x =5

Step-by-step explanation:

By adding a variable you can set up an addition sentence

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2 years ago