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
dybincka [34]
2 years ago
10

Solve the system of equations by ELIMINATION.

Mathematics
1 answer:
Dafna1 [17]2 years ago
6 0

Step-by-step explanation:

4x + 2y = 10 --------(1)

2x + 3y = 33 -----------(2)

Multiply 2 with eq. (1) and 4 with eq. (2)

8x + 4y = 20 ____________(3)

8x + 12y = 132 ______(4)

Subtracting (3) from (4),

8x + 4y = 20

- 8x -12y = -132

----------------------

0 -8y = -112

y = 112/8

y = 4 is the answer.

Putting the vakue of y in eq. (2),

2x + 12 = 33

2x = 33-12

2x = 21

x = 21/2 is the answer.

You might be interested in
Which box shows a relationship where the constant of proportionality is 64?
Sever21 [200]

Answer:

C

Step-by-step explanation:

Constant of proportionality = \frac{y}{x}

Let's find out which if the boxes will give us 64 as constant of proportionality.

A. \frac{y}{x} = \frac{11}{2} = 5.5 ≠ 64

B. \frac{y}{x} = \frac{5}{15} = \frac{1}{3} ≠ 64

C. \frac{y}{x} = \frac{16}{\frac{1}{4}} = 16*\frac{4}{1} = 64 ≠ 64

D. \frac{y}{x} = \frac{\frac{3}{7}}{3} = \frac{3}{7}*\frac{1}{3} = \frac{1}{7} ≠ 64

E. \frac{y}{x} = \frac{2}{-10} = -\frac{1}{5} ≠ 64

F. \frac{y}{x} = \frac{21}{6} = \frac{7}{2} ≠ 64

G. \frac{y}{x} = \frac{4}{8} = \frac{1}{2} ≠ 64

From the boxes given, box C is the only box that shows us a relationship where the constant of proportionality is 64.

7 0
3 years ago
What is (9/8)^3x+12=1
Ludmilka [50]

Answer:

x = -88/27 = -3.259

Step-by-step explanation:

It was really hard to figure out but this should be it

6 0
3 years ago
Alicia shoots A basketball at a hoop hundred times. She hits the backboard and Misses with 2/5 of her shots, hit the rim and mis
g100num [7]

Answer:

28 baskets

Step-by-step explanation:

Total Shots = 100

Backboard and miss = 2/5 of total

That is:

\frac{2}{5}*100=40

Rim and miss = 32% of total

That is:

32% = 32/100 = 0.32

0.32 * 100 = 32 shots

So, miss = 40 + 32 = 72

The rest, she makes, so left:

100 - 72 = 28 shots

Alicia makes 28 baskets (from 100)

4 0
3 years ago
The inequality models all of the combinations of scores of 20 and 30 points that will give a total greater than 400 points in a
adoni [48]

Answer:

<h2>D. They will be negative numbers.</h2>

Step-by-step explanation:

If the inequality models scores of 20 and 30 points, then the values for variables x and y must be positive, because you can't score a negative number, you score or you don't that's it.

Therefore, the right answer is D. They will be negative numbers, because score can't be negative numbers.

4 0
3 years ago
The angle of elevation from a point 25 feet from the base of a tree on level ground to the top of the tree is 30°. Find the heig
xz_007 [3.2K]
The answer is C it won’t let me do all the steps but I hope it helps
8 0
2 years ago
Read 2 more answers
Other questions:
  • Find the lateral surface area of the cylinder to two decimal places.<br> will mark as brainiest
    12·1 answer
  • Leon correctly found the slope and y-intercept of the line that passes through the points (9, –8) and (3, 4) as follows.
    15·1 answer
  • 3.25x-1.5y=1.25 13x-6y=10
    11·2 answers
  • Evaluate the expression -5|k+3| for k=-11
    11·1 answer
  • A movie was shown 6 times every day from November 24 through December 19. How many times was the movie shown in all
    15·1 answer
  • Three friends go shopping together, and each buy the same kind of oranges. LaMar buys 2 pounds (lb) and pays $5.00. Enrico buys
    12·2 answers
  • Given the function f(x) = 6(x+2) − 3, solve for the inverse function when x = 21
    9·1 answer
  • I don't get this question i need some help please!!!
    10·2 answers
  • When a power is raised to a power, what operation is performed on the exponents?
    5·1 answer
  • 1 meter is equal to 100 centimeters or 1,000 millimeters. How many millimeters are in 2 meters, 17 millimeters?
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!