3(3x+3)=8x+5
Solve the equation above for x. Which of the following is correct?
1
4
-1
-4
Correct Answer : D
We use the order of operation to solve for the unknown value of x.
3(3x+3)=8x+5
Multiply 3 with each number in the brackets
(3*3x)+(3*3)=8x+5
9x+9=8x+5
Subtract 9 from both sides
9x+9-9=8x+5-9
9x=8x-4
Subtract 8x on both sides
9x-8x=8x-8x-4
x=-4
Thus, the unknown value of x is -4.
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Explanation
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Explanation
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Correct Answer is C
Explanation
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Total distance run by athlete=7+3=10 miles
Total time=45+15 =60 minutes
The athlete runs 10 miles in 60 minutes. For the athlete to cover 1 mile, he will run for a time less than 60 minutes. Thus, in 1 mile, the athlete takes:
So, in 6 minutes, the athlete covers 1 mile.
Correct Answer is D
Explanation
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Explanation
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Explanation
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Explanation
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Explanation
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Â
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Correct Answer is C
Explanation
Let x be the original price of the recliner.
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The recliner is on sale for 30% less than the original price:
SalePrice=x−0.3x=0.7x
Step 2: Apply the 25% coupon discount
The consumer gets an additional 25% off the sale price:
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Step 3: Solve for x
The consumer paid $237, so:
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