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pishuonlain [190]
3 years ago
9

Complete the steps to solve the inequality: 0.2(x + 20) – 3 > –7 – 6.2x

Mathematics
2 answers:
sergeinik [125]3 years ago
5 0
The answer is A.(x>-1.25)
iris [78.8K]3 years ago
4 0

Answer:

The solution of inequality as x>-\frac{5}{4}

Step-by-step explanation:

 Given inequality 0.2(x + 20) – 3 > –7 – 6.2x

We have to solve the given inequality

Consider 0.2(x + 20) – 3 > –7 – 6.2x

Multiply both side by 10, we have

0.2\left(x+20\right)\cdot \:10-3\cdot \:10>-7\cdot \:10-6.2x\cdot \:10

on simplifying, we get,

2\left(x+20\right)-30>-70-62x

Expand by multiplying 2 , we get,

2x+40-30>70-62x

2x+10>70-62x

Subtract 10 both side, we get,

2x+10-10>-70-62x-10

Simplify, we get,

2x>-62x-80

Add 62x both side, we get,

2x+62x>-62x-80+62x

Simplify , we get,

64x>-80

Divide both side by 64, we get,

\frac{64x}{64}>\frac{-80}{64}

Simplify , we get,

x>-\frac{5}{4}

Thus, the solution of inequality as x>-\frac{5}{4}

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Answer:

Factoring in groups is like breaking it apart piece by piece and takes more steps.

Factoring the difference of two squares takes few steps and is easier.

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Sara is 9 years younger than her brother, Michael. The sum of their ages is 47 years. How old is Sara and how old is her brother
kotykmax [81]

Answer:

Michael is 38 and Sara is 29

Step-by-step explanation:

Because it says the sum of their age is 47 you do 47-9=38 so that would be Michael's age and than because Sara is 9 years younger than him and then you would do 38-9=29

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The sum of two numbers is 180. one number is 5 times the number
steposvetlana [31]
180 divided by 5 = 36..................
7 0
3 years ago
Read 2 more answers
Graph y+5x+2.5=0 and (x,y):x->1)
Hunter-Best [27]
Since this is numberical data graph it as a line graph
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3 years ago
Jimmy cell phone plan has been a base charge of $50 per month with an additional charge of 65 cents per app downloaded. Lisa cel
Soloha48 [4]

Answer:

20

Step-by-step explanation:

We write what we know.

Jimmy

$50/mo   app 65¢ or .65

Lisa

$55/mo   app 40¢ or .40

a = number of apps

The difference will come from the number of apps, a.

We need them to equal each other so let's write an equation.

$50 + .65a = $55 + .40a

We need to solve for a.

$50 + .65a = $55 + .40a     subtract $50 for each side.

$50 - $50 + .65a = $55 - $50 + .40a

.65a = $55 - $50 + .40a

.65a = $5 + .40a     subtract .40a from each side

.65a - .40a = $5 + .40a - .40a

.65a - .40a = $5

.25a = $5   Divide each side by .25

.25a/.25 = $5/.25

a = $5/.25

a = 20

So Jimmy and Lisa need to download 20 apps for their bill to be the same.

7 0
3 years ago
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