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mestny [16]
2 years ago
6

Verify the -(-x) = x for x= -21/31​

Mathematics
1 answer:
aliina [53]2 years ago
6 0

Answer:

-3

Step-by-step explanation:

because of the root

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A manager checked production records and found that a worker produced 160 units while working 40 hours. In the previous week, th
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Answer:

Decrease

Step-by-step explanation:

160/40 = 4 units/hour

138/36 = 3.833 units/hour

3.833 < 4

So it's a decrease

5 0
4 years ago
The sum of seven angles of an octagon is 132 degrees each. Find the measure of the eighth angle.
Sauron [17]

the sum of the angles in an ngon (a polygon with n sides) is (n-2)*180

so an octagon has 8 sides and has a sum total of (8-2)*180=1080 degrees

if each of 7 angles is 132, then 1080=?+7*132

1080=?+924

156=?

the 8th angle is 156 degrees

6 0
4 years ago
I need help anyone can anyone help
AleksAgata [21]

Answer:

14

Step-by-step explanation:

The perimeter is the sum of the sides, so we have

2x+x+15+4x-7=57

= 7x+8

Subtracting 8 from both sides, we get

7x= 49

Dividing 7 from both sides, we get

x=7

Our sides are then 2x=14, x+15=22, and 4x-7=21. 14 is our answer

4 0
3 years ago
Read 2 more answers
7 Point Question Tyler was trying to prove that all rhombuses are similar. He thought, “If I draw 2 rhombuses, I can find dilati
Viefleur [7K]

A rhombus can have the same shape and dimension as a square or a

parallelogram, therefore, all rhombuses are not similar.

  • A step in the proof that have flaws is <u>step 3</u>.

Reasons:

By reading through the given steps, we have, the first step that is incorrect

is step 3.

Step 3: The requirement for the similarity of two figures based on the

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triangles as given by the triangle proportionality theorem.

This is so because, the lengths of the sides of a triangle depends on the

opposite interior angle, while the side of a rhombus can have a

combination of large length and and acute angle.

Two rhombuses that have proportional sides may be dissimilar,

because they can have different interior angles.

Therefore;

<u>The step in Tyler's proof that have a flaw is Step 3</u>

Learn more about similarity between geometric figures here:

brainly.com/question/10270676

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2 years ago
Finding the Area of a Circle Given the Radius Th It The area in terms of pi isi mi? The approximated value for the area is A cir
Umnica [9.8K]

Answer:

I'd use A = πr^2

The area is 28.3 if we're using 3.14 as pi (rounded to the nearest tenth)

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4 years ago
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