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
katrin2010 [14]
3 years ago
7

Which of the following are solutions to the system

Mathematics
1 answer:
Tomtit [17]3 years ago
5 0

Answer:

A & B

Step-by-step explanation:

5x - 2y = 10 (1)

-2.5x + y = -5 (2)

When you multiply (2) by -2, you get (1), so there can be many solutions

To choose from the given options, plug in the values to check which ones satisfy the equation

5x - 2y = 10

A) (2,0)

5(2) - 2(0) = 10

10 = 10 (true statement)

B) (-2,-10)

5(-2) - 2(-10) = 10

-10 + 20 = 10

10 = 10 (true statement)

You might be interested in
Lee has a jar of 100 pennies. She adds groups of 10 pennies to the jar. She adds 5 groups. What numbers does she say?
Tanzania [10]
5 groups x 10 = 50+ 100= 150
7 0
3 years ago
Please Solve this, it would be extremely helpful for me.
Sidana [21]

Answer:

Step-by-step explanation:

1) ΔCPD & ΔEPF

∠CPD = ∠EPF   { Vertically opposite angles}

∠CDP = ∠PFE {CD║EF, FD is transversal, Alternate interior angles are equal}

ΔCPD ≈ΔEPF  {AA criteria for similarity }

\frac{DC}{EF} =\frac{PC}{EP}\\\\\\\frac{27}{EF}=\frac{15}{7.5}\\\\

Cross multiply

EF * 15 = 27 * 7.5

EF =\frac{27*7.5}{15}\\\\

EF = 27 * 0.5

EF = 13.5 cm

ii) EF // AB, so Triangles ACB & ECF are similar triangles

\frac{AB}{EF}=\frac{AC}{EC}\\\\\frac{22.5}{13.5}=\frac{AC}{22.5}

AC= \frac{22.5*22.5}{13.5}\\\\AC=37.5 cm

AC = 37.5 cm

6 0
3 years ago
30 = y - 2<br> and work plzzz
9966 [12]

Answer:

Step-by-step explanation:

y - 2 = 30

y = 32

3 0
3 years ago
Read 2 more answers
Please answer and explain.
djyliett [7]

Answer:

x = 13

Step-by-step explanation:

The sum of the exterior angles of a 4 sided polygon is 360

139+ 6x+9x+2x = 360

Combine like terms

139+17x=360

Subtract 139 from each side

17x = 360-139

17x = 221

Divide each side by 17

17x/17 = 221/17

x = 13

8 0
2 years ago
Read 2 more answers
A 4 sided polygon has 2 congruent sides and the non congruent sides are parallel. What is the most accurate name of the polygon?
Harlamova29_29 [7]

Answer:

Trapezoid

Step-by-step explanation:

So there's four sides on a trapezoid. The top and bottom ones are parallel. But they're not congruent. I don't think... Anyway, good luck.

3 0
3 years ago
Read 2 more answers
Other questions:
  • Express your answer in smaller unit 800 m 35 cm - 154 m 49 cm
    12·1 answer
  • 7.<br> Meghan said the opposite of the sum of -12 and 4 is 8. Do you agree? Why or why not?
    6·1 answer
  • Help please (ty to the people who know this) :)
    15·2 answers
  • What does the flat portion of the graph represent?
    5·2 answers
  • What is the means-to-MAD ratio of the two data sets, expressed as a decimal?
    11·1 answer
  • What’s is BPD Please help me
    15·1 answer
  • Factorise<br>21x squared - 14x​
    11·1 answer
  • Hurry ASAP!!!!!! I really need help the first person to answer gets marked as brainliest
    13·1 answer
  • I WILL GIVE BRAINLIEST TO FIRST CORRECT ANSWER!!
    7·1 answer
  • 2 1/6−(−8/3)+(−4 7/9)
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!