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
Umnica [9.8K]
2 years ago
15

Solve each system by elimination

Mathematics
1 answer:
MaRussiya [10]2 years ago
3 0
X-y=11
2x+y=19
add them


x-y=11
<u>2x+y=19 +</u>
3x+0y=30

3x=30
divide 3
x=10

sub baack
x-y=11
10-y=11
minus 10
-y=1
times -1
y=-1


(x,y)
(10,-1)
You might be interested in
Pietro has $75. He used 3/5 of his money to buy a new pair of running shoes. How much did Pietro spend on his new shoes
cupoosta [38]

Step-by-step explanation:

HI Sofia!

So this is how you find the answer.

Amount of money pietro has=$75

Amount of money he spent on shoes=3/5 of 75

=3/5*75= 45

Thus, Pietro spent $45 on shoes.

7 0
2 years ago
Read 2 more answers
What is the circumference of the circle shown below? Use
Natali5045456 [20]

Answer:

Its B

Step-by-step explanation:

7 0
2 years ago
PLEASE HELP AS SOON AS POSSIBLE Sunny earns $22.75 per week delivering newspapers. He worked as a delivery boy for 3 weeks. He a
Pavlova-9 [17]
Step 1 he had to multiply the $22.75 times 3 weeks it should have been 
($22.75 x 3) + $32.75 - $14.25
$68.25 + 32.75 - $14.25
$86.75
4 0
3 years ago
How do you solve #4 with a proportion
Irina-Kira [14]
The clothes weigh 14.77 kilograms.

Given:
Weight of suitcase = 50 pounds
Towels = 20% of weight
Shoes = 15% of weight
Clothes = 65% of weight

convert pounds to kilograms using proportion:

<u>pounds</u>        <u>2.2</u> = <u>50</u>
kilograms       1           x

2.2x = 50 ⇒ x = 50/2.2 ⇒ x = 22.73 kgs

Clothes : 22.73 kgs * 65% = 14.77 kgs
Towels  : 22.73 kgs * 20% =   4.55 kgs
Shoes   : 22.73 kgs * 15% =   3.41 kgs
8 0
3 years ago
Line WY is an altitude in triangle WXZ. If ΔYWZ ~ ΔYXW, what is true about XWZ? XWZ is an obtuse angle. XWZ is a right angle. XW
topjm [15]
<span>In triangle WXZ,

Line WY is an altitude (as shown in the attached picture)
Now, it is given that:
</span><span>If ΔYWZ ~ ΔYXW
</span>∠WXY = ∠WZY
<span>
Then, we can also conclude 
</span>∠WYX = ∠WYZ = 90°....(1) (because WY is the altitude)

Now, in any triangle, the sum of all the three angles is 180.

In triangle, WXY, ∠WYX = 90° (From 1)
Therefore, WXY + XWY = 90°

Similarly, in WZY.

Hence, we conclude that XWZ is a right angle.

7 0
3 years ago
Read 2 more answers
Other questions:
  • The formula for the volume of a sphere is Upper V equals four thirds pi r cubedV=
    5·1 answer
  • Let f(x) = x2 − 16. Find f−1(x) how you solve this?
    14·1 answer
  • XYZ and ABC are similar triangles. Given the dimensions shown in the diagram, what is the area of triangle ABC ? Express the ans
    9·1 answer
  • Snowy's Snow Cones has a special bubble gum snow cone on sale. The cone is a regular snow cone that has a spherical piece of bub
    11·2 answers
  • Which expression is equal to 53462÷14 <br><br>3818×14×10<br>3810×14×12<br>3810×14+12<br>3818×14+10
    14·2 answers
  • The perimeter of a rectangle is 200 meters. If the width is 25% of the length, find the dimensions of the rectangle
    9·1 answer
  • 173 миллиметр в сантиметрах ??​
    6·1 answer
  • How can you determine the coordinates of any image that is dilated with the center of dilation at the origin without graphing? E
    8·1 answer
  • Cheatan wants to make a necklace with 50 beads. He knows that 12 beads take up 5 inches of string, but the store only sells stri
    13·1 answer
  • -90 divided by -31 help​
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!