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
sergiy2304 [10]
3 years ago
7

What would you multipy and to which equation to start solving by using the elimination method? Then would you add or subtract th

em?
7x + 4y = -4
5x + 8y = 28
Mathematics
1 answer:
tester [92]3 years ago
8 0

Answer:

multiply the first equation by -2, then add them

Step-by-step explanation:

7x+4y=-4         *-2 7x+4y=-4 *-2 = -14x-8y=8

5x+8y=28

-14x-8y=8                       x=-4, y=6

-9x=36

x=-4

7(-4)+4y=-4

-28+4y=-4

4y=24

y=6

You might be interested in
Mr. Smythe needs gas for his car. If he spends $81 for 27 gallons, how much did he pay per gallon?​
eimsori [14]
$3 dollars per gallon
6 0
2 years ago
Moscow, the capital city of Russia, is at 37.62 degrees longitude and 55.75 degrees latitude. Brasilia, the capital city of Braz
notsponge [240]
The distance between two positions with longitudes A and B is given by ||A| - |B|| if the two positions are at the same side of the meridian (0 degrees longitude) and |A| + |B| if both positions are at different sides of the meridian.

Given that <span>Moscow is at 37.62 degrees longitude and Brasilia is at -47.87 degrees longitude, thus the two cities are at different sides of the meridian.

Therefore, the distance </span><span>(in degrees) between the longitude lines of Moscow and Brasilia</span> is |37.62| + |-47.87| = 37.62 + 47.87 = 85.49
6 0
3 years ago
Write the equation of the line that passes through the points
Strike441 [17]

Answer:

y= -1/2x +5.5

Step-by-step explanation:

hope this helps :)

4 0
3 years ago
Tyler's earns a commission. He makes 4% of the amount he sells. Last week, he sold $900 worth of shoes. How much was his commiss
xxMikexx [17]
He earned $325 because 900 divided by 4% = $225! :)
7 0
2 years ago
Please help idk thisssss
Alekssandra [29.7K]
ANSWER
0.073 \% = 0.00073


EXPLANATION

Recall that,

\% =  \frac{1}{100}


That is why
100\%
is equivalent to
1.





This implies that,


0.073\% = 0.073 \times  \frac{1}{100}






This is the same as,


0.073\% = \frac{0.073}{100}


When we are dividing by
100
we move the decimal point backwards two times.


This implies that,

0.073\% = 0.00073


6 0
3 years ago
Read 2 more answers
Other questions:
  • Apple the rules for other of operation to simplify 2 + 3 - 4 + ( 5 x 4)
    13·1 answer
  • Let f be the function given by f(x)=ln x/x for all x 0. the derivative of f is given by
    14·1 answer
  • PLEASE HELP! What is the area of triangle BCD in exact form? 35 points!
    14·1 answer
  • 5² x 5³ = <br><br>Choices: <br>5<br>55<br>5^5<br>5^6<br>​
    9·2 answers
  • PLEASE HELP ASAP!! CORRECT ANSWER ONLY PLEASE!!<br><br> Simplify.<br><br> −6i√-44
    15·1 answer
  • the value of a car is 28,000 bit it is depreciating 12% per year how much will the car be worth in 8 years
    13·1 answer
  • Please please help i’ll give brainliest tysm:))
    15·2 answers
  • Is x = 3/y a linear function
    13·1 answer
  • Leslie bought 6.74 kilograms of apples and 5.2 kilograms of oranges. How much fruit did she buy in all?
    9·1 answer
  • What is (6x+12)-(4x+17)
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!