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
NeTakaya
3 years ago
15

If you were to use the substitution method to solve the following system, choose the new

Mathematics
1 answer:
mestny [16]3 years ago
5 0

Answer:

23x = -115

Step-by-step explanation:

In the substitution method, you must solve for 1 variable in 1 equation to replace it in the other equation. For the system:

2x - 7y = 4

3x + y = -17

Solving for y in the second equation:

y = -17 - 3x

Replacing y in the first equation:

2x - 7(-17 - 3x) = 4

2x + 119 + 21x = 4

23x = -115

This is the new equation after use the substitution method.

You might be interested in
it rained nine days in the month of april .based on this ,what is the probaility that is does not rain on the first day of may?​
attashe74 [19]
<h3>Answer:     7/10</h3>

==========================================================

Explanation:

There are 30 days in April. Since it rained 9 of those days, the empirical probability of it raining in April is 9/30 = (3*3)/(3*10) = 3/10.

If we assume that the same conditions (ie weather patterns) hold for May, then the empirical probability of it raining in May is also 3/10. By "raining in May", I mean specifically raining on a certain day of that month.

The empirical probability of it not raining on the first of May is therefore...

1 - (probability it rains)

1 - (3/10)

(10/10) - (3/10)

(10-3)/10

7/10

We can think of it like if we had a 10 day period, and 3 of those days it rains while the remaining 7 it does not rain.

6 0
3 years ago
HELP PLZ PICK ONE OF THE ONES SHOWN:
defon

I am doing with Question Number 2

Let the two numbers be 'x' and 'y'.

According to the question, the product of two numbers is 14.

x \times y=14

So, xy=14 (Equation 1)

Now, one of the numbers is 3 ½ times the other.

So, x = 3\frac{1}{2}\times y

x=\frac{7}{2}y (Equation 2)

Substituting the value of 'x' from equation 2 in equation 1, we get

\frac{7}{2}y \times y = 14

\frac{7}{2}y^{2} = 14

y^{2} = 4

So, y= 2 and -2

So, x=\frac{14}{2} and x=\frac{14}{-2}

x=7 and -7

Numbers are 2,7 and -2,-7.

Sum of numbers 2 and 7 = 9

Sum of numbers -2 and -7 = -9.


6 0
3 years ago
An angle is equal to five times of its complement then what is its measures​
satela [25.4K]

Answer:

Then the complement of it = 90-x. Given that An angle is equal to 5 times its complement. x = 75. Hence the measure of an angle = 75.

Step-by-step explanation:

7 0
2 years ago
Write in a exponent form 2•2•2•3•3•3=_
Dima020 [189]

Answer:

2^3 • 3^2

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Main street Auto Leasing has a ratio of cars to trucks that is 9:4.
olchik [2.2K]

Answer:

I hope you understood! Good luck with the rest of your class :)

3 0
2 years ago
Other questions:
  • List the partial products of 42 x 28
    10·2 answers
  • What is the next number in the sequence? 7….10….16….28…
    7·1 answer
  • Help me with math 20 points
    14·1 answer
  • Look at image. Please help quick.
    10·1 answer
  • PLEASE ANSWER + BRAINLIEST!!
    10·2 answers
  • Which expression is the factored from of 2/3x + 4?<br> Please help ASAP
    15·1 answer
  • Solve the following: Express your answer in simplest radical form​
    15·2 answers
  • Water is flowing into and out of a small reservoir. The total amount of water can be modeled by R, where R(t)=20-15sint^2/25 cub
    12·1 answer
  • What’s the answer??????
    9·1 answer
  • Which of the following is equivalent to 249 ?
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!