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AleksandrR [38]
2 years ago
9

The perimeter of a rectangle changes from 2.5 to 10 after a dilation. What was the scale factor of the dilation?

Mathematics
1 answer:
kozerog [31]2 years ago
6 0

Answer:

4

Step-by-step explanation:

To find the scale factor divide the new length by the original.

10/ 2.5 = 4

The scale factor is 4.

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(25+3) - 7 x 3 + (2x4)
arlik [135]

Answer:

It is not correct, the answer is 15

Step-by-step explanation:

They forgot the rule of PEMDAS, and accidentally subtracted before they multiplied. It should've gone

(25+3) - 7 x 3 + (2x4)

28-7x3+8

28-21+8

Since it's minus 21, that means it's negative, so -21+8=13

28-13=15

4 0
2 years ago
Abdullah and Kanna are working on the same problem.
Leona [35]

Answer:

Abdullah is correct.

Step-by-step explanation:

The bottle contained originally 12 fl oz, so 12 fl oz is 100%.

The box now contains 20% more, so now it contains 120% of 12 fl oz.

120% * 12 fl oz = 1.2 * 12 fl oz = 14.4 fl oz

Also, 20% is 1/5. Abdullah divided 12 oz into 5 equal parts, and then he added one more 1/5. He interpreted the problem correctly. The amount in the new bottle is the amount of the old bottle plus 20% of that old amount.

Kanna considers the original amount to be 80%. When he adds another 20%, he is adding 1/4 of 12 which is too much. That is why he gets an incorrect answer that is to high. He interpreted the problem incorrectly. For him, the old bottle has 20% less than the new bottle. That is incorrect.

Abdullah is correct.

8 0
3 years ago
Henry incorrectly said the rate 1/5/2/15 can be written as the unit rate 1/75 gallon per minute. What is correct unit rate? What
Gwar [14]

Answer:d

Step-by-step explanation:

8 0
2 years ago
Which equation demonstrates the additive identity property?
Vika [28.1K]

we know that

Additive identity property:

If we add a real number to zero or add zero to a real number, then we get the same real number back.

The number zero is known as the identity element, or the additive identity.

For example: a+0 =a

we can see that adding gives same result

so, 0 is the additive identity here

Hence , option-B........Answer

4 0
3 years ago
Read 2 more answers
Figure A is dilated by a scale factor of 1 to form Figure B.
son4ous [18]

Answer:

  • C. 8 inches

Step-by-step explanation:

Note. The original question is attached.

<u>Solution:</u>

Scale factor is 1/2 and the corresponding side has a length of 16 inches.

<u>The value of x is:</u>

  • x = 1/2*16 = 8 inches

Correct option is C

6 0
2 years ago
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