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Darina [25.2K]
3 years ago
10

(5a^2+6a+2)-(7a^2-7a-5)

Mathematics
1 answer:
krok68 [10]3 years ago
8 0

For this case we must simplify the following expression:(5a^ 2 + 6a + 2) - (7a^ 2-7a-5) =

We eliminate the parentheses taking into account that:

- * + = -\\- * - = +

So:

5a ^ 2 + 6a + 2-7a ^ 2 + 7a + 5 =

We add similar terms taking into account that:

Equal signs are added and the same sign is placed.

Different signs are subtracted and the major sign is placed.

5a ^ 2-7a^2 + 6a + 7a +2 +5 =\\-2a ^ 2 + 13a + 7

Answer:

-2a ^ 2 + 13a + 7

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Answer:

Step-by-step explanation:

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6 0
3 years ago
A,B,C,D are points on the circumference of a circle centre o
Marina86 [1]

The points A,B,C,D make up the circumference of the circle

The measure of angle BAD is 65 degrees

<h3>How to determine the measure of angle BAD?</h3>

The measure of angle ODB is given as:

ODB = 25 degrees

Considering the triangle BOD, we have:

ODB + BOD + DBO = 180

Where:

ODB = DBO = 25

So, we have:

25 + BOD + 25 = 180

Solve for BOD

BOD = 130 degrees

The angle at an arc is twice the angle at the circumference.

So, we have:

BOD = 2 * BAD

Substitute 130 for BOD

130 = 2 * BAD

Divide both sides by 2

65 = BAD

Hence, the measure of angle BAD is 65 degrees

Read more about angle measures at:

brainly.com/question/17972372

7 0
2 years ago
Help pls!! .................................
tekilochka [14]

Answer:

Step-by-step explanation:

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5 0
3 years ago
Add the following numbers. (-4) + (-9) =
soldi70 [24.7K]

Answer:

-13

Step-by-step explanation:

Adding a negative means that you subtract the number as + (-) = -

This means that the equation is -4-9=-13.

6 0
3 years ago
The picture says it all please help
Mariulka [41]
The only two points that I can clearly see are (0,2) and (5,3).

The slope is (y2-y1)/(x2-x1), in this case:

m=(3-2)/(5-0)=1/5

So the slope of the line is 1/5
6 0
3 years ago
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