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2 years ago

Please help ! Easy 7th grade work .

Mathematics

2 answers:

joja [24]2 years ago

7 0

Answer:

1. -38

2. -25

3. 10

4. -4

5. 0

6. -34

7. 9

8. -7

9. -4

Step-by-step explanation:

1. -22+(-16): All is needed to be done is adding it like normally but jsut by putting a negative sign in the front: -38

2. Same idea just add

3. Regular addition

4. This one is just positive 21 + (-21)= 0 with -4 left over

5. Add -17 and -3 together for -20 then add the positive 20 to get zero

6. Add positive 25 and negitve 25. You have -34 left over.

7. Add 5+4 to get 9

8. Since -15 is bigger then 8 it becomes negative

9. -11 is bigger so subtract 7 to get 4 but it becomes negative

Tpy6a [65]2 years ago

5 0

Answer:

1-9 answers

Step-by-step explanation:

1=-38

2=-25

3=16

4=-4

5=0

6=-34

7=9

8=-7

9=-4

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Simplify expression X^2+x-2/x^3-x^2+2x-2

professor190 [17]

Answer:

$=\frac {x+2}{x^2+2}$ is the simplest form of given expression.

Step-by-step explanation:

The given question is $\frac{x^2+x-2}{x^3-x^2+2x-2}$

To solve the problem we have to group or split middle term and then factorise

$\frac{x^2+(2x-x)-2}{(x^3-x^2)+(2x-2)}$

Taking $x^2$ common from first two terms of denominator and 2 from next two terms

$= \frac{x^2+2x-x-2}{x^2(x-1)+2(x-1)}$

Now,taking x common from first two terms of numerator and -1 from next two terms and in denominator taking(x-1) common from both terms

$= \frac{ x(x+2)-1(x+2)}{(x-1)(x^2+2)}$

$=\frac{(x+2)(x-1)}{(x-1)(x^2+2)}$

Now cancel out x-1 from both numerator and denominator we get

$=\frac {x+2}{x^2+2}$ is the required simplest form.

7 0

2 years ago

Translate the sentence into an inequality twice the difference of a number and 6 is at least -22 use the variable x for the unkn

almond37 [142]

Answer:

2(n - 6) >= 22

Step-by-step explanation:

2n - 12 >= 22

2n >= 22+12

2n >= 34

n >= 34/2

n >= 17

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2 years ago

Select the correct answer.

arlik [135]

Option B is correct

Why

3x=21

3(7) =21

21=21

Step-by-step explanation:

6 0

1 year ago

Read 2 more answers

Find the sample mean on the outputs. Does the sample mean provide some evidence that the mean of the population of all possible

soldi70 [24.7K]

I know it and it is 7

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2 years ago

Can somebody plz help answer the number 10’s questions using the diagram from the bottom left side (only if u know how to do thi

Lana71 [14]

Answer:

10a: △ABC is an Equilateral triangle with all acute angles.

10b: △BCD is A scalene triangle with all acute angles.

10c: △BDE is An Isosceles triangle with one obtuse angle.

Step-by-step explanation:

10) Looking at the diagram at the bottom left;

- △ABC has 3 equal internal angles and as such, it means it will have 3 equal angles.

Thus, we can classify it as; Equilateral triangle with all acute angles.

- △BCD has 3 unequal angles. Thus, it's 3 sides are not equal. Also all the angles are less than 90°.

We can classify it as;

A scalene triangle with all acute angles

- △BDE has 2 equal angles and one angle greater than 90°. This means it has 2 equal sides.

Thus, we can classify it as;

- An Isosceles triangle with one obtuse angle.

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2 years ago