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3 years ago

I would like to know the answer pls

Mathematics

1 answer:

Elena L [17]3 years ago

4 0

Answer:

You would explain what I did in the step by step explanation.

Step-by-step explanation:

There are three types of triangles: equilateral, isosceles, and scalene. An equilateral triangle has all 3 sides congruent, an isosceles has only 2 sides congruent, and a scalene has no sides congruent. So, if the triangle has marked sides congruent, or you have found some sides congruent, then you look at the amount of sides congruent, and then you can find the type of triangle. For example, if you have a triangle called ABC, and AB and BC are congruent but AC is not, then it is Isosceles because 2 sides are congruent. You would explain the 3 triangle definitions to your friend.

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Identify each matrix A such that A^2 has identical diagonal elements?

Maksim231197 [3]

Answer:

The correct matrices are:

Matrix:

7 1 5

1 5 7

5 7 1

all diagonal elements of A^2 are: 7^2 + 1^2 + 5^2

Matrix:

9 18 27

27 -9 18

18 27 9

all diagonal elements of A^2 are: 9^2 + 27*18 + 18*27 or (-9)^2

Matrix:

8 1 6

6 8 1

1 6 8

all diagonal elements of A^2 are: 8^2 + 6*1 + 1*6

6 0

4 years ago

3 A circle centered at the origin has a radius

tankabanditka [31]

Step-by-step explanation:

x = 7 cos 210 = 7×(-½√3) = -3.5√3

y = 7 sin 210 = 7×(-½) = -3.5

point C (-3.5√3 , -3.5)

8 0

3 years ago

−12(7z+4)+15(5z−15) =

ExtremeBDS [4]

Answer:

-3(3z+91)

Step-by-step explanation:

Hope this helps :)

−12(7z+4)+15(5z−15)

= -3(4(7z+4)-5(5z-15)

= -3(28z+16-25z+75)

= -3(3z+91)

5 0

3 years ago

Read 2 more answers

Janet scored 200 and 400 points in the first 2 rounds of a computer game.

7nadin3 [17]

Answer:

B. $(200+400)-250=p$

Step-by-step explanation:

Let p be number of points Michael needs to score in 2nd game to catch up.

We have been given that Janet scored 200 and 400 points in the first 2 rounds of a computer game. So the total points scored by Janet in two games will be: $(200+400)$ points.

We are also told that Michael had scored 250 points in the first round and he want to get the same total score as Janet.

So we can find the number of points Michael needs to score to catch up Janet by subtracting the number of points scored by Michael in 1st game from total number of points scored by Janet in two games. We can represent this information in an equation as:

$(200+400)-250=p$

Therefore, the equation $(200+400)-250=p$ will help Michael to find the number of points he need to catch up Janet and option B is the correct choice.

3 0

4 years ago

Read 2 more answers

For each pair of shapes, decide whether or not Shape A is congruent to Shape B. Explain your reasoning.

WINSTONCH [101]

Shape A is congruent to Shape B because If you were to rotate one of the two and flip it the would like up and match.

5 0

3 years ago