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Fiesta28 [93]
3 years ago
10

Please help with this

Mathematics
1 answer:
aalyn [17]3 years ago
6 0

Answer60=7

Step-by-step explanation:

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Evaluate -3x 3 - 4x for x = -1.
Ksju [112]
Plug in -1 for x the solve the equation. 3 * -1 -4(-1) which equals 7
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4 years ago
At the movie theater the blaine family spent $22.00 for twoadult tickets and three child tickets. the hooper family spent $18.50
Anika [276]
2a+3c=22.00 ......equation 1
a+4c=18.50  =>2a+8c=37.00 .....equation 2
subtract equation one from equation two: 
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c=3
a+4*3=18.50 =>a=6.50

for the Hu family: 3*6.50+1*3.00=22.50 dollars
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3 years ago
Damien has 30 coins, all nickels and dimes. The total value of all these coins is $2.05. How many nickels does he have?
Damm [24]

Hi there!

nickels:19

We know that there is only nickels and dimes in his coin collection..

<u><em>1.Multiply two terms:</em></u>

<u><em /></u>10<u><em>·</em></u>10=1.00<u><em /></u>

<u><em>Then there would be 20 nickels but 1+1=2 not 2.05.</em></u>

<u><em>2.Multiply the terms:</em></u>

<u><em /></u>11<u><em>·</em></u>10=1.10<u><em /></u>

<u><em /></u>19<u><em>·</em></u>5=0.95<u><em /></u>

<u><em>3.Combine the two terms:</em></u>

<u><em /></u>1.10+0.95=2.05<u><em /></u>

Therefore, there would be 19 nickels...

<u><em /></u>

4 0
3 years ago
2/3(x-9)= -11 What is the answer for X
jonny [76]

Answer:

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Step-by-step explanation:

Given

\frac{2}{3}(x - 9) = - 11

Multiply both sides by 3 to clear the fraction

2(x - 9) = - 33 ← distribute left side

2x - 18 = - 33 ( add 18 to both sides )

2x = - 15 ( divide both sides by 2 )

x = - \frac{15}{2}

6 0
4 years ago
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Find the value of a that makes the statement true. 3^-1 divided by 3^4= 3^a <br> a=___
Firdavs [7]

3^-1 divided by 3^4 =

when dividing exponents with the same base, subtract the exponents

3^(-1-4)

3^-5

a=-5

Answer a=-5

7 0
3 years ago
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