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IrinaK [193]
3 years ago
7

Solve -20 - 5 > 3. Which graph shows the solutions?

Mathematics
1 answer:
Trava [24]3 years ago
7 0

Answer:

Third option is correct

Step-by-step explanation:

Given: -2a-5>3

To choose: the correct option

Solution:

-2a-5>3

-2a>3+5\\-2a>8

Multiply both sides by - 1

2a

For a, it includes all numbers less than -4

The graph is as follows:

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Suppose that you are looking for a student at your college who lives within five
Margarita [4]

Answer:

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6 0
2 years ago
$75 before tax. Disc: 10% Tax: 7%, Tip: 20% what’s the total?
ololo11 [35]

Answer:

$102.75

Step-by-step explanation:

Given the following question:

We are given a cost of 75 dollars and are being asked to find the total cost after adding a tip, tax, and disc to the cost. To find this answer we will use the formula to calculate percentages making sure we use 75 as our base for each addition to our total cost.

<u>Formula to calculate percentages:</u>

\frac{p\times n}{100}

<u>First the disc:</u>

\frac{10\times 75}{100}
10\times75=750
750\div100=7.5
=7.5

<u>Next the tax:</u>

\frac{7\times75}{100}
7\times75=525
525\div100=5.25
=5.25

<u>Last but not least the tip:</u>

\frac{20\times75}{100}
20\times75=1500
1500\div100=15
=15

<u>Finally add:</u>

75+7.50+5.25+15=102.75
=102.75

The total cost after adding the disc, tax, and the tip will be "$102.75."

Hope this helps.

5 0
2 years ago
A metallurgist has one alloy containing 45% copper and another containing 69% copper. How many pounds of each alloy must be use
lakkis [162]

5.25 pounds of one alloy containing 45% copper and 36.75 pounds of 69% copper is used to make 42 pounds of 66% copper

<h3>What is an equation?</h3>

An equation is an expression that shows the relationship between two or more variables and numbers.

Let x represent the amount of 45% copper and y represent the amount of 66% copper needed to make 42 pounds of a third alloy containing 66% copper. Hence:

x + y = 42   (1)

Also:

0.45x + 0.69y = 42(0.66)   (2)

This gives:

x = 5.25, y = 36.75

5.25 pounds of one alloy containing 45% copper and 36.75 pounds of 69% copper is used to make 42 pounds of 66% copper

Find out more on equation at: brainly.com/question/2972832

#SPJ1

8 0
2 years ago
ASAP Please!!<br><br>What is 25((-5/2)x+(1/2))?
Tresset [83]
Use the distributive property of multiplication.
25(-5x/2)=-62.5x, and 25(1/2)=12.5.
Add these together:  -62.5x + 12.5 (answer)
7 0
3 years ago
Which set of ordered pairs represents a function? Group of answer choices
WITCHER [35]

Answer:

{(–4, 4), (–2, 4), (1, 4), (5, 4)}

plz give brainlist

Step-by-step explanation:

it is the only one where each input has a unique output

6 0
3 years ago
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