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
Orlov [11]
3 years ago
15

Please help me solve this! I have tried multiple times but it never checks out! It's a Systems of Equations- Substitution questi

on!

Mathematics
1 answer:
Sindrei [870]3 years ago
4 0

Answer:

x = -3, y = -4

Step-by-step explanation:

Double the first equation to get 6x - 2y = -10

Now just add the two together and get x = -3. Plug this back in to get y = -4.

You might be interested in
I hate ratios I don't understand the point of them...
shusha [124]

Answer:

  2 : 9

Step-by-step explanation:

Put the given numbers in the expression and simplify:

  bikes before : total bikes

  = (bikes before) : (bikes before) + (bikes bought)

  = 6 : (6 +21)

  = 6 : 27

  = 2 : 9

_____

<em>Additional comment</em>

A question like this would do little to convince you ratios have some usefulness. There appears to be no point whatever to knowing the fraction of older bikes.

__

Ratios are used many places in the real world. Perhaps the ratios you encounter most frequently are tax rates.

If you spend any time cooking, you know that certain ratios of ingredients produce better taste and/or texture than other ratios, and you know that (generally) changing the quantity a recipe produces will involve changing all the ingredient amounts by the same ratio.

Finance, health, time, diet budgets are often specifies as ratios: 14% APR, 2.3 infant deaths per 1000 live births, 2 hours outside class for each hour in class, 25% of calories from fat, and so on.

Of course, chemistry is all about ratios. CO₂ and H₂O are perhaps some of the more important ratios in the world right now. These specific ratios of carbon, hydrogen, and oxygen atoms make substances that are both life-giving and life-threatening. Much study is directed at determining and maintaining appropriate ratios of these substances relative to others.

3 0
3 years ago
17-32/4^2 • 3+6 HELP ik its 17 but how do i show the work ??
tiny-mole [99]

Step-by-step explanation:

1. 4^2 = 16

2. 32/16 = 2

3. 2*3 = 6

4. 17-6=11

5. 11 + 6 = 17

The answer is 17

5 0
3 years ago
5. How many inch cubes does it take to fill a box with width 2 inches, length 3
lorasvet [3.4K]

Answer:

To fill your box with one inch cubes first cover the bottom. This takes 48 rows of small cubes, each row containing 72 cubes. Thus to cover the bottom takes 48 x 72 = 3456 cubes. Since your box is 6" high you need 6 layers of 3456 cubes or 6 x 3456 = 20736 cubes to fill the box.

6 0
3 years ago
Find the unit rate Lisa walked 48 blocks in 3 hours how many blocks per hour
Kisachek [45]
16 blocks in a hour
4 0
3 years ago
How many thousands are in 458,329?
nikitadnepr [17]

Answer:

Their are 8 thousands in the thousands place

Step-by-step explanation:

7 0
4 years ago
Other questions:
  • On a beach, there is a positive correlation between the number of bottles of water a person drank and the number of whales they
    11·2 answers
  • Use technology to solve for x. <br><br><br>2^x−8=3x−9 <br><br><br>What are the solutions?
    9·1 answer
  • Write two odd numbers and two even numbers explain how you know which numbers are even and which are odd
    13·1 answer
  • The annual sales of romance novels follow the normal distribution. However, the mean and the standard deviation are unknown. For
    14·1 answer
  • Jonathan has a box that contains six tennis balls and six golf balls. If he randomly picks one ball, what is the probability of
    6·2 answers
  • A triangle has an area of 100 square feet and a height of 5 feet
    5·2 answers
  • A farmer sells 8.2 kilograms of apples and pears at the farmer's market. 3 5 of this weight is apples, and the rest is pears. Ho
    12·2 answers
  • Using the sas congruence theorem Given: JK || LM , JK ≅ LM L is the midpoint of JN Prove: JKL ≅ LNM
    13·2 answers
  • What is 26.553 rounded to the nearest hundredth?
    10·2 answers
  • Mr. Smith has a maximum of $50 to spend at a museum. A ticket to the museum costs $7. He
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!