<span>3x = y + 7
</span><span> y =3x-7
</span>
<span>8x = 2y + 5
</span><span>8x = 2(3x-7) + 5
8x=6x-14+5
8x-6x=-9
2x=-9
x=-4.5
</span><span>8x = 2y + 5
</span>8(4.5)=2y+5
36=2y+5
2y=31
y=15.5
Answer:
1408 multiply 64 by 22 for a total of 1,408
Answer:
it is easier to multiply first and then to place the decimal point. Multiply the factors as if they were whole numbers. Disregard the decimal point until you place it in the product.
2x-1=0
2x=1
x=1/2
x+5=0
x=-5
Final answer: B
Answer:
See explanation
Step-by-step explanation:
<u>Step 1.</u> Substitute for d to solve for n:
From the first equation:
Then substitute it into the second equation:
<u>Step 2:</u> Substitute for n to solve for d:
There are 40 dimes and 30 nikels in the piggy bank
