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
Alika [10]
3 years ago
7

What is the solution to the system of equations?

Mathematics
1 answer:
Taya2010 [7]3 years ago
7 0

Answer:

x=-4, y=15

Step-by-step explanation:

3x+y=3

2x+y=7

Multiply top by -1

-3x-y=-3

2x+y=7

Add equations together

-x=4

x=-4

Plug x=-4 into any equation

3(-4)+y=3

-12+y=3

y=15

You might be interested in
Billy-Bob has a piggy-bank filled with nickels and quarters totaling $11.90.
Lunna [17]

Answer:

x = 33

y = 41

Step-by-step explanation:

GIven

x: number of nickels

y: number of quarters

A nickel = $0.05

A quarter = $0.25

then we have the system of equations

0.05*x + 0.25*y = 11.90

x + y = 74

Which can be solved applying any of known methods. Then, the solution is

x = 33

y = 41

hope this was helpful.

4 0
3 years ago
If a box has a length of 12 inches, a width of 10 inches and a height of 6 inches, what is the surface area?
Scrat [10]

Answer:

The answer is 28.

Step-by-step explanation:

Add all of them.

(L/ length) 12.

(W/ width) 10

(H/ height) 6

12 + 10 + 6 = 28

I hope this helps

6 0
3 years ago
Read 2 more answers
A car manufacturer builds trucks and cars both in red, blue, and green colors. Let B represent the set of all red vehicles produ
telo118 [61]

Answer:

Step-by-step explanation:

The universal set, U is a set of all vehicles produced by the manufacturer.

U = red, blue and green vehicles(both cars and trucks)

B = all red vehicles produced by the manufacturer(both cars and trucks)

C = red, blue and green trucks

C ' = all elements that are not in C but are in the universal set

C ' = red, blue and green cars

B intersection C ' = all elements that are common to set B and set C '. Therefore,

B intersection C ' = red cars

5 0
3 years ago
3. Escribe el valor absoluto de los siguientes números:
Allisa [31]

Answer:

Może być odpowiedź c ja ne wiem

6 0
3 years ago
When Riley goes bowling, her scores are normally distributed with a mean of 160 and
e-lub [12.9K]

Answer:

The interval that would represent the middle 68% of the scores of all the games that Riley bowls is (147, 173).

Step-by-step explanation:

The Empirical Rule states that, for a normally distributed random variable:

Approximately 68% of the measures are within 1 standard deviation of the mean.

Approximately 95% of the measures are within 2 standard deviations of the mean.

Approximately 99.7% of the measures are within 3 standard deviations of the mean.

In this problem, we have that:

Mean of 160, standard deviation of 13.

Middle 68% of the scores of all the games that Riley bowls.

Within 1 standard deviation of the mean, so:

160 - 13 = 147.

160 + 13 = 173.

The interval that would represent the middle 68% of the scores of all the games that Riley bowls is (147, 173).

6 0
3 years ago
Other questions:
  • write an equation, in slope-intercept form, to model each sitution. : the population of pine bluff is 6791 and is decreasing at
    11·2 answers
  • Help plzz i need the answer fast
    9·2 answers
  • Three more than twice the sum of 7 and a number is 25 find the number
    11·2 answers
  • A common assumption in modeling drug assimilation is that the blood volume in a person is a single compartment that behaves like
    6·1 answer
  • What’s the equation of the a line that passes through the point ,0-1and(2,3)?
    9·1 answer
  • Jim rent a car for the weekend can choose 1 of 2 plans the first plan has $55 initial cost an additional 0.80 per mile driven T
    7·1 answer
  • The leprechaun needs to walk 512.5 miles to get the pot of gold. If he plans
    15·1 answer
  • Find the midpoint between A(3,2) and B(12,-4)
    14·2 answers
  • Brainiest to whoever right plz
    6·1 answer
  • Answer number 1 please.​
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!