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Ugo [173]
3 years ago
7

I need help quick Solve the system of equations using substitution. 3x + 2y = 7 y = –3x + 11 (6, –3) (5, –4) (6, –7)

Mathematics
2 answers:
lyudmila [28]3 years ago
4 0

Answer:

The correct answer is (5, -4)

Step-by-step explanation:

To solve using substitution, we can take the second equation (y = -3x + 11) and use the value of y to replace y in the first equation. This will allow us to solve for x.

3x + 2y = 7

3x + 2(-3x + 11) = 7

3x - 6x + 22 = 7

-3x + 22 = 7

-3x = -15

x = 5

Now that we have that value, we can put it in for x in either equation and solve for y.

y = -3x + 11

y = -3(5) + 11

y = -15 + 11

y = -4

Therefore the correct answer is (5, -4)

DIA [1.3K]3 years ago
4 0

Answer:

(5, -4)

Step-by-step explanation:

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Answer:

False

Step-by-step explanation:

V=bhw\\V=7.5*13*2\\V=195

6 0
3 years ago
. There are 11 boys and 5 girls that tried out to
Lisa [10]

We want to find the probability that the two students chosen for the duet are boys. We will find that the probability that both students chosen for the duet are boys is 0.458

If we assume that the selection is totally random, then all the students have the same<em> </em><em>probability </em><em>of being chosen.</em>

This means that, for the first place in the duet, the probability of randomly selecting a boy is equal to the quotient between the number of boys and the total number of students, this is:

P = 11/16

For the second member of the duet we compute the probability in the same way, but this time there is one student less and one boy less (because one was already selected).

Q = 10/15

The joint probability (so both of these events happen together) is just the product of the individual probabilities, this will give:

Probability = P*Q = (11/16)*(10/15) = 0.458

So the probability that both students chosen for the duet are boys is 0.458

If you want to learn more, you can read:

brainly.com/question/1349408

5 0
2 years ago
What is the greatest common factor for 25 and 77?
klemol [59]
The answer is 1
factors of 25 are 25, 5, 1
factors for 77 are 77, 11, 7, 1
3 0
3 years ago
Read 2 more answers
Can you help me with the top one I don’t understand it
Dafna11 [192]

Answer:

the answer is 1 : 5

Step-by-step explanation:

out of 25 of them 5 are sick which in a fraction is 1/5

4 0
3 years ago
Read 2 more answers
Find the distance between (2, -75) and (10,235).
zmey [24]

Answer:

310.1

Step-by-step explanation:

Use the distance formula:

\sqrt{(10-2)^2+(235-(-75))^2}

Simplify inside the parentheses

\sqrt{(8)^2+(310)^2}

Simplify exponents

\sqrt{64+96,100}

Simplify by adding

\sqrt{96,164}

Simplify

\sqrt{96,164} =310.1

Done. B-)

4 0
3 years ago
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