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lubasha [3.4K]
3 years ago
9

Which matrix can be used to solve the system?

Mathematics
1 answer:
Brut [27]3 years ago
4 0
It's the last choice.  In the top row you have the 1's that are the coefficients on the x and the y, and the solution for that equation is 21; in the second row you have the 5 from the x and the 4 from the y and the solution for that equation which is 20.  I'm more used to writing them down instead of across, but there you have it anyways
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The bookstore sold m books on Monday and t books on Tuesday. But on Wednesday, r books were
Amiraneli [1.4K]

Answer:

t

Step-by-step explanation:

Label the books returned "b", and the books sold on monday "m", and the books sold on tuesday "t", and the books returned "r".

the formula:

b = (m + t) - r

(you can remove the brackets)

3 0
2 years ago
Given the two points write the equation for the line in slope intercept
andrezito [222]

Answer:

y = -1/2x + 2

Step-by-step explanation:

I think it is

use slope formula to find your slope.

your y intercept is two cause that's the point on your y intercept and yea pretty much.

boom roasted.

7 0
3 years ago
What does peculiar mean?<br> 1. muscular<br> 2. popular<br> 3. strange<br> 4. prescribed
NikAS [45]

Answer:

1. Strange

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Is 15b+4=25.6 equivalent to 0.6+15b+4=25.6
pychu [463]
No because
15b + 4 = 25.6
15b = 21.6
b = 1.44

0.6+15b+4 = 25.6
4.6 + 15b = 25.6
15b = 21
b = 1.4

The answers are not the same therefore they are not equivalent.
3 0
3 years ago
Suppose PR = 54, solve for QR<br> 4x-1<br> 3x-1<br> P<br> R
Svet_ta [14]

Answer:

QR = 23

Step-by-step explanation:

P, A, and R are collinear.

PR = 54

PQ = 4x - 1

QR = 3x - 1

To solve for the numerical length of PR, let's generate an equation to find the value of x.

According to the segment addition postulate:

PQ + QR = PR

(4x - 1) + (3x - 1) = 54 (substitution)

Solve for x

4x - 1 + 3x - 1 = 54

Combine like terms

4x + 3x - 1 - 1 = 54

7x - 2 = 54

Add 2 to both sides

7x - 2 + 2 = 54 + 2

7x = 56

Divide both sides by 7

\frac{7x}{7} = \frac{56}{7}

x = 8

QR = 3x - 1

Plug in the value of x into the equation

QR = 3(8) - 1 = 24 - 1

QR = 23

5 0
3 years ago
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