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Agata [3.3K]
3 years ago
9

Factor the following Polynomial both 13 and 14

Mathematics
1 answer:
Maksim231197 [3]3 years ago
8 0
A•B=C
A•B=-21
Find factors of 21 ( it doesn't matter that it's negative ) that at up to be 4
It's 7and 3
Then put x^2+7x+3x-21 and then factor by grouping
Do the same steps for #2
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5x-25=-10<br><br> Please HELP
solong [7]

Answer:

We simplify the equation to the form, which is simple to understand  

5x+25=10

We move all terms containing x to the left and all other terms to the right.  

+5x=+10-25

We simplify left and right side of the equation.  

+5x=-15

or this is another way

Simplifying

5x = 25 + -10

Combine like terms: 25 + -10 = 15

5x = 15

Solving

5x = 15

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Divide each side by '5'.

x = 3

Simplifying

x = 3

We divide both sides of the equation by 5 to get x.  

x=-3

3 0
3 years ago
Read 2 more answers
Fill in the blank statement to make it true. -3 x _ =12
S_A_V [24]
It’s -4 Bc negative times negative is a positive 3 times 4 = 12 so then just add the negatives.
8 0
2 years ago
If measure 4 is 36 degrees what is the measure of angle 2
elena55 [62]
Acute angle between 0 and 90 degrees I think
7 0
3 years ago
Solve the system of equations:<br><br> (1) x - y = 3<br><br> (2) 7x - y = -3
arlik [135]

Answer:

x= 70

and y = 67 then

-70-67 =-3

4 0
2 years ago
Read 2 more answers
I need help in these questions
Salsk061 [2.6K]

Answer:

see explanation

Step-by-step explanation:

All of these questions use the external angle theorem, that is

The external angle of a triangle is equal to the sum of the 2 opposite interior angles.

18

∠3 = 43° + 22° = 65°

19

∠2 + 71 = 92 ( subtract 71 from both sides )

∠2 = 21°

20

90 + ∠4 = 123 ( subtract 90 from both sides )

∠4 = 33°

21

2x - 15 + x - 5 = 148

3x - 20 = 148 ( add 20 to both sides )

3x = 168 ( divide both sides by 3 )

x = 56

Hence ∠ABC = x - 5 = 56 - 5 = 51°

22

2x + 27 + 2x - 11 = 100

4x + 16 = 100 ( subtract 16 from both sides )

4x = 84 ( divide both sides by 4 )

x = 21

Hence ∠JKL = 2x - 11 = (2 × 21) - 11 = 42 - 11 = 31°

3 0
3 years ago
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