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
Firdavs [7]
3 years ago
14

Solve the system of the following equations:

Mathematics
2 answers:
Alina [70]3 years ago
7 0

Answer:

(5, \:  - 2)

Step-by-step explanation:

x + 3y =  - 1 \\ 2x + 2y = 6 \\ solve \: the \: equation \\  \\ x =  - 1 - 3y \\ 2x + 2y = 6 \\ substitute \: the \: value \: of \: x \: into \: an \\ equation. \\  \\ 2( - 1 - 3y) + 2y = 6 \\ distribute \\  \\  - 2 - 6y + 2y = 6 \\ add \:  - 6y \: to \: 2y \\  \\  - 2 - 4y = 6 \\ add \: 2 \: from \: both \: sides \\  \\  -  2y = 8 \\ divide \: both \: sides \: by \: 2 \\  \\ y =  - 2 \\ substitute \: the \: value \: of \: y \: into \: an  \\  equation. \\  \\ x =  - 1 - 3( - 2) \\ distribute \\  \\  - 1  + 6 \\ add \:  - 1 \: to \: 6 \\   \\  x = 5 \\  \\ (5, - 2)

schepotkina [342]3 years ago
4 0
The answer is (5,-2)
You might be interested in
A number is written with 10 zeros, 10 ones and 10 twos. Is it possible for it to be a perfect square ? Please help. I don’t unde
lora16 [44]

Answer:

i am going to help you to understand this problem. if it is written with 10 0s it will be the billion place. because of the ten ones it will be 0,000,010, and because of the ten two's, which is 20, it will be 0,000,030. and when i searched up on google, and watched an episode of number blocks, no, 30 is not a square number OR a cube number.

Step-by-step explanation:

8 0
3 years ago
Helppp pt.5 plzzzzz​
Fiesta28 [93]

Answer: 60 cm²

Step-by-step explanation:

This is pretty simple, we know AB is 12 cm and DE is 4 cm. We know ABC has a total of 180 square centimeters. So...

12 ÷ 3 = 4

180 ÷ 3 = 60

The answer is 60 cm²

I hope this helps!

6 0
3 years ago
Is it okay to eat 8 day used by bread that been left in the refrigherater
FrozenT [24]

Bread is usually fine to eat if you don't see any mold.

Once refrigerated, it will retain its freshness for three to four days before becoming stale. If you want to extend its shelf life, packaged bread will stay fresh for at least three months in the freezer. If you do see mold, however, throw the bread out.

8 0
3 years ago
Plz help asap... Explain as much as possible to me plz
Solnce55 [7]

Answer:

see explanation

Step-by-step explanation:

Since the 2 figures are similar then the ratios of corresponding sides are equal, that is

\frac{8}{x} = \frac{18}{6} ( cross- multiply )

18x = 48 ( divide both sides by 18 )

x = \frac{48}{18} = \frac{8}{3} = 2 \frac{2}{3}

Similarly

\frac{5}{y} = \frac{18}{6} ( cross- multiply )

18y = 30 ( divide both sides by 18 )

y = \frac{30}{18} = \frac{5}{3} = 1 \frac{2}{3}

3 0
3 years ago
A scientist needs to make 2 liters of saline solution (salt water), in which the salt
gulaghasi [49]

Answer:

1.60 L of 10% solution

0.40 L of 35% solution

Step-by-step explanation:

If x = amount of 10% saline solution, and y = amount of 35% saline solution, then:

x + y = 2

0.10x + 0.35y = 0.15(2)

Solve with substitution:

0.10x + 0.35(2 − x) = 0.15(2)

0.10x + 0.70 − 0.35x = 0.30

0.40 = 0.25x

x = 1.60

y = 0.40

5 0
3 years ago
Other questions:
  • How many solutions does the equation 6y - 3y -7 = -2 +3 have?
    5·1 answer
  • A salsa recipe uses green pepper, onion, and tomato in the extended ratio 2:5:9. How many cups of onion are needed to make 96 cu
    6·1 answer
  • A team of 4 people participated in a 400 yard relay race. Each team member runs the same distance. The team complete the race in
    12·1 answer
  • Plz help me ASAP I need it for math class on flvs thanks
    15·2 answers
  • Write the equation of the line below, in slope-intercept form.<br> ​
    7·2 answers
  • Sandi's
    12·1 answer
  • Here are four fractions. Write them small to large<br> 2/3<br> 3/5<br> 5/8<br> 7/11
    7·2 answers
  • Tony sells sporting goods. He makes a 10% commission on every dollar of sales that he makes. One month Tony got a commission che
    6·2 answers
  • PLEASE ANSWER THIS ASAP !!!!!!
    15·1 answer
  • I need help!!! I have no idea what im supposed to do
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!