1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Arlecino [84]
3 years ago
9

Which expression can be substituted for y in the top equation of the

Mathematics
1 answer:
maria [59]3 years ago
6 0

Answer:

Y=7+3x, x=-3, y=-2

Step-by-step explanation:

3x-5y=1. Equation 1

3x-y=-7. Equation 2

-y=-7-3x isolate for y in equation 2

y=7+3x multiplied by -1 to get positive y

3x-5(7+3x)=1 substitute y value of equation 2 (7+3x) into equation 1

3x-35-15x=1

-12x=36

x=-3

solve for y.

3x-5y=1

3(-3)-5y=1

-9-5y=1

-5y=10

y=-2

You might be interested in
Can someone please help me solve this problem
ololo11 [35]

Answer:

3

Step-by-step explanation:

substitute -2 in where y is.

the subtraction sign in front of the 3 makes it negative so -3 x -2 is positive 6.

4x+6=18, subtract 6 on both sides.

4x=12

divide 4 on each side.

×=3

3 0
3 years ago
Tom has 2 8-foot long boards he needs to cut pieces that are 15 inches long. How many 15 inch pieces can he cut from the two boa
Ksju [112]

Answer:

Tom can cut 12 (15 inch pieces) from the two boards.

Step-by-step explanation:

We're first given foot measurements and we're asked to find the answer in inches. That means we must convert 8 feet to inches, which is a 1:12 inches conversion. 8 times 12 will give you 96, so now you will multiply that value by 2 because Tom has 2 8-foot long boards. That will give you 192 inches. Since the question is asking for 'how many 15 inch pieces he can cut from the two boards?', you will need to divide 192 inches by 15 to find the answer. This will give you 12.8 boards. Because you can't have parts of an object, the answer will be 12 whole boards.

4 0
4 years ago
What is 999+999+999+23456
ohaa [14]

Your answer is 26,453

Although I don't feel as if this is a homework question, I will still show the work.


Work:

Step 1: 999 + 999 = 1,998

Step 2: 1,998 + 999 = 2,997

Step 3: 2,997 + 23,456 = 26,453


Hope I was able to help! :)

6 0
4 years ago
Read 2 more answers
Help meeeeeeeeeee I need help please please please please please please please please please please please
Kamila [148]
Its 1 = 5 im pretty sure
6 0
4 years ago
50:55
Lana71 [14]

Answer:

UV corresponds to RS.

\angle R corresponds to \angle U

Step-by-step explanation:

Given

\triangle SRQ and \triangle VUT

Transformation: Rigid

Required

Determine the true options

When a rigid transformation occurs from SRQ to VUT, the following are the corresponding sides:

SR to VU, SQ to VT, RQ to UT

And the corresponding angles are:

<S to <V, <R to <U and <Q to <T

From the corresponding sides above, we have:

SR to VU

Rewrite:

RS to UV

Hence: (c) is correct

From the corresponding angles above, we have:

\angle R to \angle U

Hence:

(b) is correct

8 0
3 years ago
Other questions:
  • Choose the missing number to make equivalent fractions. 1/4=?/16 A. 2 B. 4 C. 6 D. 8
    5·1 answer
  • Some life insurance policies have cash value and loan value benefits. Some life insurance policies have cash value and loan valu
    8·2 answers
  • Could someone help me
    7·1 answer
  • Jesse is playing a game with a number cube with faces numbered 1 through 6. What is the probability of rolling a number that is
    14·1 answer
  • Which is the graph of y = Lx] -2?
    15·1 answer
  • Melia put the $30 her Grandmother gave her for her tenth birthday into her piggy bank. Each week after
    13·1 answer
  • Latisha wants to buy pumpkins and autumn squash for a fall display. She has a budget of no more than $117 but wants to buy more
    7·2 answers
  • X + 1 is a factor of x^5 +4x^3-17+12. True or false
    15·1 answer
  • The campus at Joliet Junior College has a lake. A student used a Secchi disk to measure the clarity of the lake’s water by lower
    8·1 answer
  • Greastest common factor please help me
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!