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DaniilM [7]
3 years ago
8

This is for adding and subtracting polynomials, word problems. I have real difficulty with word problems in math, so please help

me!

Mathematics
1 answer:
Dennis_Churaev [7]3 years ago
8 0

please see the attached picture for full solution

Hope it helps..

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2x + 4 = 3x - 2<br><br> a. -2<br><br> b. 7 <br><br> c. 3<br><br> d. 6
blsea [12.9K]
The answer is 6.

2x + 4 = 3x - 2
-2x -2x
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4 = x - 2
+2 +2
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6 = x
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3 years ago
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A popular baseball card is in great demand. The shop marks its price, $68, up by 8%. What is the new price?
Xelga [282]
The correct answer is B
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After triangle ACE is dilated by a factor of 6, it has an area of 180 square inches. What was its area before dilation?
Agata [3.3K]

Answer:

The area of triangle ACE before dilation is:  30 square inches

Step-by-step explanation:

We know that when an object is dilated by a scale factor, it gets reduced, stretched, or remains the same, depending upon the value of the scale factor.

  • If the scale factor > 1, the image is enlarged
  • If the scale factor is between 0 and 1, it gets shrunk
  • If the scale factor = 1, the object and the image are congruent

The length of the image can be determined by multiplying the length of the original point by a certain scale factor.

Given that after triangle ACE is dilated by a factor of 6, it has an area of 180 square inches.

Thus, it means the dilated area is 6 times the area before dilation.

Let x be the pre-dilation area

As the dilated area is 6 times the area before dilation, so

6x = 180

divide both sides by 6

6x/6 = 180/6

x = 30 square inches.

Therefore, the area of triangle ACE before dilation is:  30 square inches

4 0
3 years ago
A car completes a journey of 570 km at an average speed of 75 km/h calculate the time taken for the journey in hours and minutes
Evgesh-ka [11]
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At Fireside Bookshop, you buy a book for $30.00. If the sales tax is 9.5%, what is the total price you pay for the book?
AfilCa [17]

Answer:

$32.85

Step-by-step explanation: 9.5% of 30 is 2.85

30 + 2.85 = 32.85

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3 years ago
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