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Aleksandr [31]
3 years ago
13

Find the errors and correct the following mathematical sentences.​

Mathematics
2 answers:
zhuklara [117]3 years ago
6 0

Answer:

The correct answers are:

xii) (x+7)(x+7)

=x^2 +7x +7x +49

=x^2 +14x +49

xiv) (x+4)(x+2)

=x^2 +2x +4x +8

=x^2 +6x +8

xvi) 5x^3 ÷ 5x^3

=1

Levart [38]3 years ago
6 0

Answer:

This is your answer ☺️☺️

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Over the last three evenings, Debra received a total of 110 phone calls at the call center. The second evening, she received 4 t
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Answer:

See below.

Step-by-step explanation:

Total = 110

Let calls on third evening = x

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2 years ago
The area of polygon MNOPQR = Area of a rectangle that is 9 square units + Area of a rectangle that is ___ square units. (Input w
vekshin1
You have the polygon MNOPQR which can be expressed as two rectangles pasted one next to each other.

To see the two rectangles in the picture, you can draw a line parallel to segment MR througn point N.

From the original picture you can state the dimensions of both rectangles.

Call S, the point where the line that you drew intercepts the segment RQ.

Then one rectangle is MNSR and the other rectangle is OPQS.

The measures of the sides of the rectangle MNSR are:

- the length of MN = length of SR = base

- the length of MR = the length of NS.= height

So its area is base * height, which you can all A1.

The measured of the rectangle OPQS are:

- segment OP = segment SQ = segment QR - segment SR = base

- segment PQ = segment OS = height

So its area is base * height, which you can call A2.

Then the area of the polygon MNOPQRS is A1 + A2. One of them is 9 u^2 and the other is what the answer is asking for, and that you have calculated above.

With this procedure you can tell the value needed.   

 
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3 years ago
One angle of a parallelogram measures 110°. What are the measures of the other three angles in the parallelogram?
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Answer:

70, 110, 70

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The measures of the adjacent angles of a parallelogram always add up to be 180 degrees (they are supplementary).

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