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galben [10]
3 years ago
10

Please helpp, thank youuu.

Mathematics
2 answers:
Morgarella [4.7K]3 years ago
5 0

Answer:

b=16

Step-by-step explanation:

Mariulka [41]3 years ago
4 0

Answer:

16ft

Step-by-step explanation:

use pythagreom thereom

12^2+b^2=20^2 solve

144+b^2=400

b^2= 256 square it

b= 16

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Consider the accompanying matrix as the augmented matrix of a linear system. State in words the next two elementary row operatio
Lubov Fominskaja [6]

Answer:

The answer is below

Step-by-step explanation:

The next step to solve the system, would be to divide the second row by 3 and we would be left with:  3 * R2

[1 -5 3 0 -2

0 1 -7/3 0 4/3

0 0 1 2 -2]

Then what we will do is multiply row 3 by 7/3 and then subtract it from row 2, that is, R2 - 7/3 * R3, and it would look like this:

[1 -5 3 0 -2

0 1 0 14/3 -10/3

0 0 1 2 -2]

And these would be the next two steps in the process of solving the system.

4 0
3 years ago
What is -7/12 + 3/8?
inna [77]

Answer:

-\frac{5}{24}

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Wha is 3x+3y=-9 in standard to slope intercept form simplified, thank you!
Alona [7]

Answer

Step-by-step explanation:

The answer would be y=-x-3. 3x+3y=-9 is in standard form and you want it to be in y=mx=b form (slope-int) so subtract 3x by both sides. Now, you have 3y=-3x-9. Divide 3 to both sides, now you will get y=-x-3.

6 0
3 years ago
you are given that 4a - 2b =10 and a + c = 3. write an expression in a, b and c that is equal to 23. give your answer in its sim
uysha [10]
4a - 2b = 10
a + c = 3 so a = 3 - c and c = 3 - a

4(3 - c) - 2b = 10
12 - 4c - 2b = 10
-4c -2b = -2
2c - b = 1

That’s all I have so far :/
8 0
3 years ago
ASAP HURRY.
saw5 [17]

won't it be 3.2 because A square has four sides so you multiply 0.8 by 4

6 0
3 years ago
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