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Minchanka [31]
3 years ago
7

A calculator showed the answer to a multiplication problem as 2.8e–4.

Mathematics
1 answer:
jolli1 [7]3 years ago
8 0
2.8 X 10-4. The last one
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The length of a rectangle is four times the width. The perimeter of the rectangle is 45 inches. Write a system of
Yakvenalex [24]

Answer:

81 square inches.

Step-by-step explanation:

Draw a diagram to represent what you know.

You don't know the values of the lengths so represent them algebraically.

You know the perimeter is 45 inches and that the perimeter is calculated by the sum of all of the sides of a shape.

You can rearrange to find the value of a side you've denoted as some unknown variable.

The area is given by the product of the sides. Express this algebraically and then input the value you found.

4 0
2 years ago
Can anyone help me with number 3 please
Gnoma [55]
Answer:


I think is (B)
4 0
2 years ago
Subtract:<br> (-9z-7) – 11z
umka2103 [35]

Answer: -20z-7

Step-by-step explanation:

(-9z-7) – 11z

−9z−7−11z

 (-9z-11z)-7

-20z-7

Hope this helps, now you know the answer and how to do it. HAVE A BLESSED AND WONDERFUL DAY! As well as a great Valentines Day! :-)

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3 0
3 years ago
Read 2 more answers
What is the answer and how to solve it and give me the right answer
Keith_Richards [23]

Answer:

2/10 or in its simplest form 1/5

Step-by-step explanation:

there is 2 grey marbles so 2/10 (there is 10 marbles altogether)

so half of 2 is 1 and half of 10 is 5

so the answer is 1/5

7 0
2 years ago
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Plzzz help<br> What is the distance between P(-3, -2) and Q(5, -2)?
Yuri [45]
Well first, you have to know the distance formula. You plug the coordinates into it and you get the answer.

\sqrt(-2 + 3) ^{2} + (-2 - 5) ^{2}

√1² + -7² = d

d = 7.1
6 0
3 years ago
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