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
kykrilka [37]
3 years ago
6

2x-y=10 y=-4x+2 substitution method

Mathematics
1 answer:
AlladinOne [14]3 years ago
5 0

Answer:

the solution is (2, -6)

Step-by-step explanation:

Substitute the second equation into the first, replacing y in the first:

2x - (-4x+2) = 10

Simplifying, we get:

2x + 4x - 2 = 10, or:

6x = 12, which yields x = 2.

Substituting 2 for x in the second equation yields y = -4(2) + 2 = 0, or y = -6

Then the solution is (2, -6).

You might be interested in
The titanic was 882 feet 9 inches long. You can build a model of the ship that is 2nfeet 6 inches long and 6 inches high. What w
tigry1 [53]
So the actual titanic was 882 feet and 9 inches long, and the model is 2 feet and 6 inches.

1.) Convert both the model and the real titanic to inches.
882 feet = 10584 inches (multiply 12) plus another 9 inches is 10593 inches

And for the model,
2 feet is 24 inches plus another 6 inches is 30 inches.

2.) Find the scale factor compared to the model and the actual thing.
The actual thing is 10,593 and the model is 30 inches. Divide 10593 by 30 to find the scale factor. You should get <span>353.1

</span>3.) Multiply the scale factor to the height.
Since we have the model height and the scale factor, to find the actual height we can just multiply the model height times the scale factor.

6 inches x 353.1 = <span>2118.6 inches
</span>That means the titanic's actual height is 2118.6 inches

4.) Round to the nearest inch.
Because the instructions say round to the nearest inch, we must round 2118.6 to the nearest inch.
You should get 2119 (because the 6 in the tenths place is greater than 4)

Our final answer is 2119 inches. :)
4 0
3 years ago
In a game, 20 small squares of paper are numbered 1 through 20. If Egan randomly selects 1 piece of paper, what is the probabili
garri49 [273]

Answer:

1/4

Step-by-step explanation:

Probability is essentially (# times a specific event occurs) / (# times any general event occurs).

Here, the "specific event" is selecting a multiple of four. The multiples of 4 from 1 to 20 are: 4, 8, 12, 16, and 20 - there are 5 of these. So, the number of times the specific event can occur is 5.

The "general event" is selecting any number out of the 20. Since there are 20 numbers, then there are 20 ways that a general event occurs.

So, the probability is 5/20 = 1/4.

3 0
4 years ago
Read 2 more answers
If (2-3) + (x + y) = 6, what is x + yl?
Stella [2.4K]

Answer:

7

Step-by-step explanation:

2-3 = -1 and 7 - 1 is 6

x+y=7

                   

6 0
3 years ago
Please help me with this math question!
nlexa [21]
If the temperature drops 35 degrees everyday for 7 days, you would have to add -35 + -35 + -35 +-35 + -35 + -35 + -35, since each day it drops the temperature would be -35, now the answer would be -245.

Hopefully this helped. :)
8 0
4 years ago
Read 2 more answers
Find the range of the function f(x)=10-x squared
Natali5045456 [20]
F’(x) = d over dx (10-xsq
4 0
4 years ago
Other questions:
  • What is this equation<br> 6(14+8)+12
    8·1 answer
  • Solve each equation. 8.5 - 3z = - 8z
    7·1 answer
  • What’s the answer and how do I solve it ?
    5·1 answer
  • -1 3/5 divided by (-2/3)<br> thx
    6·1 answer
  • It takes about me 25 minutes to make out a test for a mathematics class how long will it take to make out test for all five of m
    10·2 answers
  • Y=2x +7<br> Find the x interception
    10·1 answer
  • 2.2.3 + 5.68 + 21.047=
    14·1 answer
  • Someone help<br> me plsss
    6·1 answer
  • Help pls . <br> (Stop typing just to type miserable a^^ with mommy &amp; daddy issues .)
    15·1 answer
  • The highest common factor (HCF) of two numbers is 6.
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!