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
BabaBlast [244]
3 years ago
15

Solve the system using elimination.

Mathematics
1 answer:
Zarrin [17]3 years ago
7 0

<u>The solution is (1,2)</u>

Step-by-step explanation:

 7x + 10y = 27

 x - 10y = -19                                                                                                                    +--------------------

8x = 8

Divide by 8 on both sides

x = 1

To find y substitute any of the equations to 1

7(1) + 10y = 27

7 + 10y = 27

Substract 7 from both sides

10y = 20

Divide by 10

y = 2

You might be interested in
In a football drill, Ron is standing 30 yards directly east of John, and Bill is standing 40 yards directly north of John. If th
kykrilka [37]
So essentially these people have made a right triangle. The hypotenuse is going to be the distance from Bill to Ron.

Let's abbreviate B for Bill, J for John, and R for Ron.

J -> R = 30 yds
J -> B = 40 yds

These two lengths are the legs of the right triangle.

B -> R = hypotenuse of the right triangle.

Let's find the distance from B to R using the Pythagorean Theorem:

30^{2} + 40^{2} = c^{2}
900+1,600= c^{2}
2,500= c^{2}
\sqrt{2500} = \sqrt{c^{2} }
c=50

We now know that the hypotenuse is 50 yds.

The question wants to know the distance from R -> B (50 yds) and B -> J (40 yds). Let's add those together to get the total distance the football traveled:

50+40=90 yds

The football traveled 90 yds total.
4 0
3 years ago
Read 2 more answers
Find the measure of the<br>exterior angle shown.<br><br>​
katrin [286]

Step-by-step explanation:

3x+10°=70

or,3x=70-10

or,3x=60

or,x=60÷3

or,x=20

7 0
3 years ago
The distance to the top of the flagpole from where the student is standing is 240 feet. What is the approximate angle of elevati
lys-0071 [83]

answer is 1.566 deg

Step-by-step explanation:

The angle of elevation is given by the formula

tanθ = height/distance

tanθ  = H/ 240

tanθ × 240 = H

θ =( tan∧-1) 240

= <u>1.566 deg</u>

4 0
4 years ago
My answer is 19.2 is it correct ??
igomit [66]
24 is the 8% so let's set up a proportion.

Part/whole = %/100

24/x = 8/100

X = 300

Your answer is wrong, sorry
7 0
3 years ago
Read 2 more answers
Solve each equation.<br> 1) -133 = 7(-3 + 4v)
AveGali [126]
X=-4 trust me this right
6 0
3 years ago
Read 2 more answers
Other questions:
  • Help me! Mathematics, quick, I'm on Time Limit!<br><br> Thank you all very much!
    11·2 answers
  • Which whole number is closest to √149
    9·2 answers
  • A chemical company makes two brands of antifreeze. The first brand is 55 % pure antifreeze, and the second brand is 80 % pure an
    7·1 answer
  • The photo below is being enlarged to form a 24- by 30-inch print. What is the scale factor being used to enlarge it? 5 ia​
    7·1 answer
  • On the first day, you pay $5 for 2 boxes of popcorn.
    11·2 answers
  • What fraction of an hour is 15 minutes pls help
    10·2 answers
  • In a warehouse, boxes have been stacked in 4 layers as shown. The workers make other stacks according to the same pattern. If a
    6·1 answer
  • PLEASE PLEASE HELP!!! WIL GIVE BRAINLYEST: find the perimeter and area of the square ​
    13·1 answer
  • Solve this<br><img src="https://tex.z-dn.net/?f=%20%5Csqrt%5B3%5D%7B27%20%5Ctimes%2027%20%5Ctimes%2027%7D%20" id="TexFormula1" t
    9·2 answers
  • Help me pls w dis question
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!