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
anzhelika [568]
3 years ago
9

Y = 3x

SAT
1 answer:
Anna71 [15]3 years ago
3 0

Answer:

-12

Explanation:

We are given information to solve for 2 variables x and y. To solve this I substituted 3x for y in the equation 5x - 4y = 21

So substituting gets us 5x - 4(3x) = 21

and we can solve the equation for x

5x - 12x = 21

-7x = 21

x = -3

Now that we have found x, we can find y simply by putting it in the equation y = 3x

y = 3(-3) = -9

Once we have both variables, we can find the answer to x + y

-3 + -9 = -3 - 9 = -12

So the answer to the question

x + y = -12

You might be interested in
The document shows a personal allowances worksheet. A portion of a personal allowances worksheet. The document asks about depend
Stells [14]

The document shows a personal allowances worksheet. The document asks about dependents because the number can lower overall taxes

For better understanding let's explain what the personal allowance worksheet means

  • The Personal Allowances Worksheet is commonly known as a worksheet that is often used for getting to know more about the number of deductions or simply say personal allowance that an individual can claim. It is stated that more allowances you claim, the lesser the tax that is withhold from an individual's paycheck.

From the above we can therefore say the answer, The document shows a personal allowances worksheet. The document asks about dependents because the number can lower overall taxes, is correct

Learn more about personal balance sheet from:

brainly.com/question/10245126

5 0
2 years ago
Read 2 more answers
A 60 g ball is tied to the end of a 70 -cm-long string and swung in a vertical circle. The center of the circle, as shown in the
dangina [55]

The tension in the string an instant before it broke is; T = 0.86 N

<h3>What is the Tension in the string?</h3>

We are given;

mass of ball; m = 60 g = 0.06 kg

Length of string; L = 70 cm = 0.7 m

Height the ball reaches; h = 150 cm = 1.5 m

From Newton's equation of motion;

v² - u² = 2as

where v = 0 m/s Thus;

-u² = 2(-9.81 * (1.5 - 0.7)

u² = 15.696

u = √15.696

u = 3.17 m/s

Thus, tension is;

T = mu²/L

T = (0.06 * 3.17²)/0.7

T = 0.86 N

Read more about Tension at; brainly.com/question/14187947

5 0
3 years ago
Remote sensing of the Earth's surface and atmosphere may involve the use of what type of instruments?
jasenka [17]

Remote sensing is the acquisition of information about an object or phenomenon without making physical contact with the object.

The methods of sensing are based on electromagnetic energy released or reflected from Earth's surface at some range above the earth. Remote sensors can be either passive or active depending upon the source of electromagnetic energy.

Earth's surface and atmosphere may involve the use of any of the instruments depending on the type of research to be done.

There are mainly two types of instruments used, passive and active instruments, below are some of the instruments used;

Ozone and Aerosol LiDAR. Radar Wind Profiler, Radiometer, Imaging Radiometer, Spectrometer, Spectroradiometer, Radar (Radio Detection and Ranging), Scatterometer, Lidar (Light Detection and Ranging), Laser Altimeter, SAOZ Instrument.

3 0
3 years ago
Read 2 more answers
To view your late Date of attendance (LDA), you need to
frutty [35]

Answer:

d every 2-3 days

Explanation:

3 0
3 years ago
If you guess my middle name i will give you 50 points!
Otrada [13]
Answers :

So here’s what I got
Betty, Michelle, Maria, Rose, Elizabeth? , Elise , Elle, Heather , Veronica

8 0
3 years ago
Read 2 more answers
Other questions:
  • A friend is very nervous about an upcoming test. You suggest she
    5·2 answers
  • A source can be either primary or secondary.
    14·2 answers
  • Pls help me this sis due in ten minutes and and no guessing
    11·2 answers
  • According to the article, WHY did scientists suspect that climate change would affect Australia first?
    10·1 answer
  • One important strategy to keep credit card costs down is to:
    13·2 answers
  • Which of the following is the most important greek contribution to western civilization?
    12·1 answer
  • It is the process of improving the terms for individuals.
    12·1 answer
  • A fruit fly population has a gene with two alleles.
    12·1 answer
  • What is most likely the setting of the poem? a) a church b) a dreamscape c) an art museum d) an old library
    9·1 answer
  • When a salesperson takes the time to make sure the selected customers actually need the products and have willingness and author
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!