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
Tamiku [17]
3 years ago
14

Which of the following ordered pairs represents the solution to the system of equations below?

Mathematics
1 answer:
expeople1 [14]3 years ago
5 0
<span>-3x + 2y = 2  eq (1)

  7x - 3y = 7    eq (2)

Mutiply eq (1) by 3 and eq (2) by 2:

-9x + 6y = 6

14x - 6y = 14

Add th two new equations:

-9x + 14x = 6 + 14

=> 5x = 20

=> x = 20/5

=> x = 4

Now from eq (1)

-3(4) + 2y = 2

=> 2y = 2 + 12

=> 2y = 14

=> y = 14 / 2

=> y = 7

So the ordered pair is (4,7)

Answer: option B. (4,7)
</span>
You might be interested in
Rachel tutors English. for each hour that she tutors, she earns 50 dollars. Let E be her earnings (in dollars) after tutoring fo
n200080 [17]

Answer:

a. E = 50 H b. 950 dollars

Step-by-step explanation:

a. Since Rachel tutors English for 50 dollars for each hours, her rate is 50 dollar per hour. If she tutors for time, H hours, Her earning E = rate × time = 50 × H

E = 50H.

b. If Rachel's earnings after tutoring for 19 hours is gotten by substituting H = 19 into the equation for the earnings, E.

So, E = 50H

E = 50 × 19

E = 950 dollars.

So, Rachel's earnings after 19 hours is 950 dollars.

4 0
3 years ago
Benny Brought $5 dozen Eggs from the Grocery store to bake some cakes how many did benny buy
user100 [1]

Answer:

60 eggs.

Step-by-step explanation:

a dozen is 12. So 5 times 12 is 60.

5 0
3 years ago
In the opening scene of the movie Raiders of the Lost Ark, Indiana Jones replaces a golden statue with a bag of sand. The platfo
chubhunter [2.5K]

Answer:

1920π

Step-by-step explanation:

First, you need to find the volume of the statue in terms of pi.

Volume of cylinder formula:

V=πr²h

V=π4²15

V=π16×15

V=240π

Then, you need to find the mass of the statue.

Mass:

Mass= density × volume

Mass=20×240π

Mass=4800π

Now, you need to find the volume. Since the sand has to weigh the same as the statue, the mass is going to stay the same. To find the volume you need to do:

V=mass of sand/density

V=4800π/2.5

That gives you your answer:

1920π

Note: I had to do the exact same problem on Khan Academy. This is right.

3 0
2 years ago
Sophie found the volume of the figure below by using the steps shown.
Westkost [7]

Answer: it's C Sophie used the wrong height for the pyramid

It's Right cause I took the test.

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Venla is 5 years older than her cousin Kora. Write an equation for the age of Venla, v, when Kora is k years old
Maksim231197 [3]
V=k+5

Here you go, hope this helps
6 0
3 years ago
Other questions:
  • 5+4 X 2+6-2 X 2-1
    12·1 answer
  • Which is the following is equivalent to 60^1/2
    12·1 answer
  • What is m∠A ? Enter your answer in the box.
    10·2 answers
  • I am confused help plz
    11·1 answer
  • A certain game has a deck of cards labeled 1,2,3, or 4. At the beginning of a turn, a player draws a card from the deck and then
    9·2 answers
  • SUBJECT: Algebra<br> LESSON: Multiplying Polynomials<br><br> (x^3 + 2x − 3)(x^4 − 3x^2 + x)
    15·1 answer
  • If x = -6, which inequality is true? A -5-3x&gt;10 B -3-5x 13 D 2-x&lt;-3
    6·1 answer
  • Simplify: (3 √u^2v)(5 √v^2)=
    12·2 answers
  • (functions) The debate club started with 3 students. The number
    14·1 answer
  • Prove that, for all positive values of n,
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!