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3 years ago

20/40 - 21/40 x 80/7 Reduce answer in lowest terms. HELP.

2 answers:

7 0

$\frac{20}{40}-\frac{21}{40}\cdot \frac{80}{7}=\frac{\not20^1 }{\not40^2} - \frac{\not21^3}{\not40^1} \cdot \frac{ \not80^2}{\not7^1} = \frac{1}{2}- 6=-5\frac{1}{2}$

LUCKY_DIMON [66]3 years ago

3 0

$\frac{20}{40} - \frac{21}{40} \cdot \frac{80}{7}= \frac{1}{2} - \frac{3\cdot7}{40}\cdot\frac{2\cdot40}{7}= \frac{1}{2} - \frac{3}{1}\cdot\frac{2}{1}= \frac{1}{2} -6=-5 \frac{1}{2}$

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I do not have the energy to do this, someone help please?

matrenka [14]

Separate into two groups
y^3(5y+4) + 5(5y+4)
(y^3 + 5)(5y + 4)

8 0

2 years ago

Tyler baked 702 cookies he sold them in boxes of 18 after selling all of the boxes of cookies for the same amount of each he ear

jenyasd209 [6]

Keywords:

Cookies, boxes, sale, profit, unit cost

For this case we have to bake an amount of 702 cookies, which were distributed in boxes of 18 for sale. Selling each box at the same price earned a profit of 136.50 dollars, you want to know the unit cost of each box of cookies.

Let $"x"$ be the number of boxes of cookies:

So, to know the number of boxes we divide 702 cookies among 18:

$x = \frac {702} {18}\\x = 39$

So, we have Tyler sold 39 boxes of cookies

Now, let $"y"$ be the cost of each box of cookies, to know the unit cost or sale price of the cookie boxes, we divided 136.50 dollars among 39 boxes of cookies, then:

$y = \frac {136.50} {39}\\y = 3.5$

Thus, the cost of each box was 3.5 dollars.

Answer:

The cost of a box is 3.5 dollars

5 0

2 years ago

Read 2 more answers

Simplify and determine the coefficient of (-x)(5y)(-2x). A. -4 B. 1/5 C. 1 D. 4

Mekhanik [1.2K]

Answer: 10

Step-by-step explanation:(-x)(5y)(-2x)

=(-5xy)(-2x)

=10x^2y

therefore,the coefficient of the equation is 10.

3 0

2 years ago

Solve for v -7 v+3 = -63

denis23 [38]

Answer:

v = 66/7

Step-by-step explanation:

Step 1: Write equation

-7v + 3 = -63

Step 2: Solve for v

Subtract 3 on both sides: -7v = -66

Divide both sides by -7: v = 66/7

Step 3: Check

Plug in x to verify if it's a solution.

-7(66/7) + 3 = -63

-66 + 3 = -63

-63 = -63

8 0

2 years ago

Read 2 more answers

Question 9 of 2

vagabundo [1.1K]

Company A charges a $125 annual fee plus $7 per hour car share fee.

Company B charges $110 plus $10 per hour. The minimum number of hours that a car share needs to be used per year to make company A a better deal is 6 hours.

A: y=125+7 x

B: y=110+10 x

for A to be a better deal than B, 125+7 x<110+10 x has to be true

subtract 7x from both sides and subtract 110 from both sides of the inequality: 15<3 x

divide by 3: 5<x

so x has to be greater than 5 , im pretty sure it's 6 hours but it might also be 5 depending on how it's taught for you.

Equations are not always balanced on both sides using a "equal to" symbol in mathematics. Sometimes it can be about a "not equal to" relationship, meaning that something is superior to or inferior to another. In mathematics, an inequality is a relationship between two numbers or other mathematical expressions that results in an unequal comparison. Inequalities are the name given to certain algebraic mathematical expressions.

Learn more about inequality brainly.com/question/20383699

#SPJ9

6 0

1 year ago