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
melamori03 [73]
2 years ago
7

Solve using elimination 5x+7y=9 2x-3y=-37

Mathematics
1 answer:
uranmaximum [27]2 years ago
4 0

Answer:

x = -8

y = 7

Step-by-step explanation:

5x + 7y = 9

2x - 3y = -37

1.) First, multiply each side to match either y-values or x-values. (In this example, we'll use match x-values)

10x + 14y = 18 (multiplied by 2)

10x - 15y = -185 (multiplied by 5)

2.) Then, subtract the entirety of one equation to isolate the y-value.

10x + 14y = 18

-10x + 15y = 185

3.) Add and subtract values and divide to find y.

29y = 203

y = 7

4.) Plug-in y to solve for x into one equation, or repeat steps 1-3.

15x + 21y = 27

14x - 21y = -259

29x = -232

x = -8

You might be interested in
Which equation has no solution? A 2(x+1)=1 B 2(x+1)=2x+2 C 2(x+1)=2x+1 D 2(x+1)=2
Veseljchak [2.6K]

Answer:

C) 2(x+1)=2x+1 ( No Solution )

Step-by-step explanation:

1)

2(x+1)=1\\\cfrac{2\left(x+1\right)}{2}=\frac{1}{2}\\x+1=\cfrac{1}{2}\\ x+1-1=\frac{1}{2}-1\\\boxed{x=-\frac{1}{2}}

2)

2(x+1)=2x+2\\2x+2=2x+2\\2x+2-2=2x+2-2\\2x=2x\\2x-2x=2x-2x\\0=0

3)

2(x+1)=2x+1 \\2x+2=2x+1\\2x+2-2=2x+1-2\\2x=2x-1\\2x-2x=2x-1-2x\\0=-1\\\boxed{No\:Solution}

4)

2(x+1)=2\\\cfrac{2\left(x+1\right)}{2}=\cfrac{2}{2}\\x+1=1\\x+1-1=1-1\\x=0

~

4 0
2 years ago
1. simplify radical expression. <br> please and thank you
gayaneshka [121]

Answer:

option number 2 should be the answer if I'm wrong I'm mega sorry not that  great at math. :>

3 0
3 years ago
A dolphin in an aquarium is 12 feet long. A scale model of the dolphin is 3.5 inches long. What is the scale factor of the mode?
polet [3.4K]

 Assuming the life sized dolphin is 12 ft long, what we want to know is what factor do you multiply 12 ft by to get 3.5 inches so converting this to an equation gives: 12*f=3.5 solving for f gives f=3.5/12=.29166...The units on the factor are inches/foot.

        So to get the size if anything linear in the small scale you just multiply it's dimension in the full scale by f.

3 0
3 years ago
What 30+30+30+4+60+9+80
mihalych1998 [28]

Answer:

243

Step-by-step explanation:

3 0
2 years ago
Round 5,685 to the nearest 100
asambeis [7]
5,700..................
6 0
3 years ago
Read 2 more answers
Other questions:
  • Determine the transformations done on pentagon 1 to obtain pentagon 2.<br> [[ ANSWER ASAP ]]
    9·1 answer
  • What goes into 75 and 25
    8·2 answers
  • Can someone please help!! I’m giving 15 points away for it!
    9·1 answer
  • Can you please help me
    6·1 answer
  • What is 63(2x+8)(x+7)
    6·2 answers
  • A data set contains three points and two of the residuals are -12 and 6. What is the third residual?
    5·2 answers
  • jayson is making 5 sock puppets. he glues 2 buttons on each puppet for it eyes. he glues 1 pompon on each puppet for its nose
    12·1 answer
  • Mahmoud earns $450 per week plus a 20% commission as a car salesman. He wants his
    6·1 answer
  • Which of the following would be found on a consumer’s credit report?
    5·2 answers
  • What is the value of t in 3(8+t)=25.50
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!