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
BigorU [14]
4 years ago
13

All questions are about this system of equations:

Mathematics
1 answer:
sertanlavr [38]4 years ago
6 0
If we are eliminating x, we would multiply the 2nd equation by -5

5x + 18y = 23
x + 3y = 2....multiply by -5
-----------------
5x + 18y = 23
-5x - 15y = - 10 (result of multiplying by -5)
----------------add
0 + 3y = 13.....bye-bye x :)

You might be interested in
Walker is planning a summer vacation. He want to visit petrified national forest and meteor crater,Arizona,the 500000-year old i
lakkis [162]

Answer:

56.25 miles

Step-by-step explanation:

Walker wants to visit petrified national forest and meteor crater.

On a map, a scale is 2 inches = 75 miles.

The national forest and meteor crater are about 1 and a half inches apart.

Let x miles be the actual distance between national forest and meteor crater.

Then

2 inches - 75 miles

1\dfrac{1}{2} inches - x miles.

Write a proportion:

\dfrac{2}{1\frac{1}{2}}=\dfrac{75}{x}

Cross multiply

2\cdot x=75\cdot 1\dfrac{1}{2}\\ \\2x=75\cdot \dfrac{3}{2}\\ \\2x=\dfrac{225}{2}\\ \\x=\dfrac{225}{4}=546.25\ miles

Or you can think in such way:

2 inches - 75 miles

1 inch - 37.5 miles

1/2 inch - 18.75 miles

1 1/2 inches - 37.5 + 18.75 = 56.25 miles

7 0
4 years ago
Find the interest due on $1,400 at 9% for 270 days
Andreas93 [3]
The answer is 34,020. I hope that this helps. 
7 0
3 years ago
Read 2 more answers
PLEASE HELP FAST!!
Gnesinka [82]
Hello,
Please, see the attached file.
Thanks.

3 0
3 years ago
-9(c+7)= 13c+7<br> what value of C makes the equation true? Enter the answer in the box
Natasha2012 [34]
x= -35/11
1) distribute, -9x -63x = 13x+7
2) put like terms on the same side of parentheses, -9x -13x= 7+63
3) combine like terms, -22x = 70
4) solve for x, x= -70/22
5) simplify, x= -35/11
7 0
3 years ago
Draw and label a coordinate plane, including the four quadrants and the positive or negative values of x and y in each quadrant.
tangare [24]
Hey how you doing, you know school sucks
7 0
3 years ago
Read 2 more answers
Other questions:
  • A 92.0 kg football player at 6.50 m/s North collides with an 85.0 kg football player running at 6.00 m/s south. The 92.0 kg foot
    7·1 answer
  • A machine prints 8 banners in 120 seconds. How many seconds does it takes to print 1 banner?
    10·1 answer
  • Paul is six years older than Gary.<br> The sum of their ages is 30.<br> What are their ages?
    9·1 answer
  • What is the answer to 7/8 minus 1/16
    12·2 answers
  • How do I find the answer to this problem?
    9·1 answer
  • the length of a flower garden is 9 meters. the width of the garden, w, is unknown. if the area of the garden is greater than 45
    15·1 answer
  • A ball is thrown straight up from the height of 3 ft with a speed of 32 ft/s. It’s height above the ground after x seconds is gi
    7·1 answer
  • The measure of an angle is 1°. What is the measure of its supplementary angle?
    6·1 answer
  • it takes mike 18 minutes to finish reading 4 pages of a book. How log does it take for him to finish reading 30 pages?
    14·1 answer
  • PLS HELP NOW 55 POINTS ALL I HAVE
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!