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
coldgirl [10]
3 years ago
15

-x+2y=9 -7x-2y=-1 Solve each system by elimination

Mathematics
1 answer:
g100num [7]3 years ago
5 0
X - 2y = - 9
7x + 2y = 1

x - 2y = - 9
(+)
7x + 2y = 1
___________
8x = - 8

x = - 1

- 1 - 2y = - 9
2y = 8
y = 4

i am a mathematics teacher. if anything to ask please pm me
You might be interested in
Which two fractions are equivelent to 1 over 4
Serhud [2]

Answer:

2/8 and 3/12

Step-by-step explanation:

You multiply both the numerator and denominator by the same number to get equivalent fractions.

1 x 2

4 x 2

= 2/8

and

1 x 3

4 x 3

= 3/12

8 0
2 years ago
Find the solutions to x2 = 24.<br> O A. x = +216<br> O B. x = 16.6<br> O C. x= 46<br> O D. x = +62
babymother [125]

Answer:

x =±2 sqrt(6)

Step-by-step explanation:

x^2 = 24

Take the square root of each side

sqrt(x^2) = sqrt(24)

x = ±sqrt(4*6)

x =±sqrt(4) sqrt(6)

x =±2 sqrt(6)

5 0
3 years ago
If point P is 4/7 of the distnace frm M to N, what ratio does the point P partiion the directed line segment from M to N
vredina [299]

Answer: 4:3.

Step-by-step explanation:

Given: Point P is \dfrac{4}{7} of the distance from M to N.

To find: The ratio in which the point P partition the directed line segment from M to N.

If Point P is between points M and N, then the ratio can be written as

\dfrac{MP}{MN}=\dfrac{MP}{MP+PN}

As per given,

\dfrac{MP}{MP+PN}=\dfrac{4}{7}\\\\\Rightarrow\ \dfrac{MP+PN}{MP}=\dfrac{7}{4}\\\\\Rightarrow\ \dfrac{MP}{MP}+\dfrac{PN}{MP}=\dfrac{7}{4}\\\\\Rightarrow\ -1+\dfrac{PN}{MP}=\dfrac{7}{4}\\\\\Rightarrow\ \dfrac{PN}{MP}=\dfrac{7}{4}-1=\dfrac{7-4}{4}=\dfrac{3}{4}\\\\\Rightarrow\ \dfrac{PN}{MP}=\dfrac{3}{4}\ \ \or\ \dfrac{MP}{PN}=\dfrac{4}{3}

Hence, P partition the directed line segment from M to N in 4:3.

7 0
3 years ago
Pls anyone I need answer of this urgent PLEASE
oksian1 [2.3K]

Answer:

Q.#1 is a

Q.#2 is d

Step-by-step explanation:

hope this helps:)

5 0
2 years ago
A hobby store marks up remote-controlled cars 25%. The original
aksik [14]
Answer: $37.50

Explanation:
1. Turn 25% into a decimal by removing the “%” and placing a “0.” in front of it. (0.25)
2. Multiply the decimal (0.25) by the original price of the car (30). (0.25x30=7.5)
3. Add 7.5 to 30 to get the answer. (7.5+30=37.5=$37.50)
7 0
3 years ago
Other questions:
  • The probability that a randomly selected teenager watched a rented video at least once during a week was 0.75. What is the proba
    7·1 answer
  • What is the volume of the right prism with height h=14 cm, if the base of the prism is a triangle ∆ABC with side AB = 9 cm and a
    10·2 answers
  • A toy box contains eight green balls and four purple balls. Suppose you choose a ball at random and then replace it by putting i
    8·1 answer
  • Find the vertex of the quadratic function: y= 2x^2 - 12x + 9
    13·1 answer
  • 9) Simplify 2x^5-6^2+4x^4y/2x
    10·1 answer
  • HELP!!!!!!!!!!!!GIVING BRAINLIEST!!!!!!!!!!!!!!!
    10·2 answers
  • the area of a rectangle with the width x-5 and the length x-12 is 44 square feet. what are the dimensions
    15·1 answer
  • Pregunta 6 (3 puntos)
    5·1 answer
  • Need help ASAP will give more points
    12·2 answers
  • What is the average rate of change for this quadratic function for the interval
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!