Plug in -1 for x the solve the equation. 3 * -1 -4(-1) which equals 7
2a+3c=22.00 ......equation 1
a+4c=18.50 =>2a+8c=37.00 .....equation 2
subtract equation one from equation two:
5c=37-22=15
c=3
a+4*3=18.50 =>a=6.50
for the Hu family: 3*6.50+1*3.00=22.50 dollars
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>
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<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>
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<u><em>3.Combine the two terms:</em></u>
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Therefore, there would be 19 nickels...
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Answer:
x = - 
Step-by-step explanation:
Given
(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 = - 
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