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wolverine [178]
3 years ago
14

Help plz One equation with decimals f.) 4.5x + 9 = 40

Mathematics
1 answer:
klio [65]3 years ago
7 0

Answer:

x = 6.8

Step-by-step explanation:

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3 years ago
Zahra compares two wireless data plans Which equation gives the correct value of n
Tpy6a [65]

Answer:

8n=20+6(n-2)

Step-by-step explanation:

n is the number of GB

Plan A has no initial fee and charges 8$ per each GB

So A has an equation that is y=0+8n or just y=8n.

Plan B has 20 for the first 2 GB and $6 for each addition GB after the first 2.

So B has an equation  that is y=0+20+6(n-2) assuming n is 2 are greater.

So the two equations are y=8n and y=20+6(n-2).

We want Plan A to be the same as Plan B.

So we need to solve:

8n=20+6(n-2).

Let's check our equation:

Distribute:

8n=20+6n-12

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2n=20-12

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Divide both sides by 2:

n=4

Plan A charges 8 dollars ber GB, so plan A charges 4(8)=32 dollars.

Plan B charges 20 dollars for the first 2GB and 6 dollars for each GB after so we used 4 which means we are spending 20+6(2)=20+12=32 dollars.

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3 years ago
The price of a gallon of gas dropped from 3.50 to 2.87 by what percentage was the price gas reduced
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Answer:

<h2><u>18%</u></h2>

Step-by-step explanation:

To do this, we first divide 2.87 by 3.50. This gets us 0.82. So we now know that 2.87 is 82% of 3.50. But we're trying to find the reduced amount. So we now Do 100%-82% (82% being 2.87) to get 18%. So the answer is 18%. To make sure we are right, we do 18% of 3.50 to get 0.63 cents. We then take 3.50 and subtract 0.63 to get 2.87. So it reduced by 18%

6 0
3 years ago
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