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lord [1]
3 years ago
10

Which of these shows the result of using the first equation to substitute for y in the second equation, then combining like term

s?
y = 3x
2x + 3y = 55

A. 11x = 55
B. 5x = 55
C. 9x = 55
D. 5y = 55
Mathematics
2 answers:
AURORKA [14]3 years ago
5 0

11x=55 just took the test

const2013 [10]3 years ago
4 0

Answer: A. 11x=55

Step-by-step explanation:

The given system of equations:

y = 3x.....................(1)\\\2x + 3y = 55.................(2)

When we substitute the value of y in equation (2), we get

2x+3(3x)=55\\\\\Rightarrow\ 2x+9x=55\\\\\Rightarrow\ 11x=55

Hence, the result of using the first equation to substitute for y in the second equation, then combining like terms is 11x=55

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15=g/7 what does g equal to ​
const2013 [10]

Answer: 105 = g

Step-by-step explanation: To get <em>g</em> by itself, we would multiply

both sides of the equation by 7.

On the left, (7)(15) IS 105 and on the right, the 7's cancel.

So we have 105 = g.

4 0
3 years ago
Read 2 more answers
A test is worth 50 points. Multiple-choice questions are worth 1 point, and short-answer questions are worth 3 points. If the te
dezoksy [38]
Use the following formula to find the answer to this question: 

S * Q + M * Q = P 

Representations: 

S = The amount of points for short-answer questions. 

M = The a<span>mount of points for m</span>ultiple-choice questions. 

Q = Number of questions for each of the type of questions that add up to the total number of questions on the test (20 questions). 

P = Total points on the test. 

Since there is a total of 50 points on the 20 question test, you would need to divide up the amount of questions there are for each of the type there are on the test, short-answer, and multiple-choice. 

3 * Q + 1 * Q = P 

Now find how many of the type of questions there are out of 20 questions on the test that would add up to the total number of points on the test. 

3 * Q + 1 * Q = 50 

(15 + 5 = 20 questions on the test, 15 and 5 can be used for the number of questions for each type of question on the test). 

3 * 15 + 1 * 5 = 50 

45 + 5 = 50 

50 = 50 

So, your total number of multiple choice questions are: 5. 
And, your total number of short answer questions are: 15. 

I would go with D. for your answer. I may be wrong. 

<em>I hope this helps. </em>

<em>~ Notorious Sovereign</em>
5 0
3 years ago
Make sure to pick ALL
goldfiish [28.3K]

Answer:

a is 2x+2x and 4x

b is 6(7y-4) and 6*7y-6*4

6 0
3 years ago
Deena has 2 pairs of white socks, 3 pairs of black socks, 1 pair of red socks, and 2 pairs of navy socks in her sock drawer. Eac
bonufazy [111]

Answer:

25 is the correct answer because the amount of white socks out all of the socks is 2/8 which is equal to 1/4. 1/4 is 25%.

7 0
3 years ago
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Giving away the last of my points :( <br> please answer these two questions
o-na [289]

Answer:

i think it a and c

Step-by-step explanation:

if i'm wrong sorry bout that i was just trynna help.since ur giving away ur last points u can go to my account and anwer my questions u dont have to give me the right  answer or anything i promise i wont report u just do that and you can get mote points :)

8 0
2 years ago
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