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
natali 33 [55]
2 years ago
7

42x+25y=486, x+y=14show work please help asap!​

Mathematics
1 answer:
ruslelena [56]2 years ago
3 0
Rewrite equations:
x+y=14;42x+25y=486

Step: Solvex+y=14for x:
x+y=14
x+y+−y=14+−y(Add -y to both sides)
x=−y+14

Step: Substitute−y+14forxin42x+25y=486:
42x+25y=486
42(−y+14)+25y=486
−17y+588=486(Simplify both sides of the equation)
−17y+588+−588=486+−588(Add -588 to both sides)
−17y=−102
−17y
−17
=
−102
−17
(Divide both sides by -17)
y=6

Step: Substitute6foryinx=−y+14:
x=−y+14
x=−6+14
x=8(Simplify both sides of the equation)

On Fri, Sep 20, 2019 at 12:08 PM ESQULESE BLACK wrote:

You might be interested in
If x) = 4x^2 + 1 and g(x) = x^2 - 5, find (f + g)(x).​
Vedmedyk [2.9K]

Answer:

C. 5x² - 4

General Formulas and Concepts:

<u>Algebra I</u>

  • Composite Functions
  • Combining Like Terms

Step-by-step explanation:

<u>Step 1: Define</u>

f(x) = 4x² + 1

g(x) = x² - 5

(f + g)(x) is f(x) + g(x)

<u>Step 2: Find (f + g)(x)</u>

  1. Substitute:                    (f + g)(x) = 4x² + 1 + x² - 5
  2. Combine like terms:    (f + g)(x) = 5x² - 4
8 0
2 years ago
Which expression has the same value as 9,381x5?
elena55 [62]

Answer: C) (9000x5) + (300x5) + (8~5) + (1x5)

Step-by-step explanation:

First Find what 9381 times 5 is.

9381x5=46108

Now Find out all the equations.

9000x5= 45000

300x5=1500

8-5=3

1*5=5

Now Add it all up.

45000+1500=46100

46100+3=46103

46103+5=46108

So, Your Answer is (C)

Your Welcome.

3 0
2 years ago
The question is in the picture (:
Arte-miy333 [17]

Answer:

\frac{(x - 2)(x + 2)}{x - 8}

6 0
2 years ago
Read 2 more answers
Simplify the radical expression. Please explain how you got your answer.<br><br> √25/4
astra-53 [7]
√25/4=5/2 because 5/2 times 5/2 equal 25/4. Hope it help!
6 0
3 years ago
GOOD REVIEW IF BOTH OF THE ANSWERS ARE CORRECT
Over [174]

Answer for 1:

I don't know the actual answer, but for Forms, you can press ctrl + U and find the answers in the code

Answer for 2:

x = 28

Step-by-step explanation:

Since the overall angle is 90°, and we already have 33, we subtract 33 from 90

90 - 33 = 57

So we have to fill in the other 57°

2(28) = 56

56 + 1 = 57

So the answer is x = 28

8 0
3 years ago
Other questions:
  • - 3(x + 1) &lt;6 solve the inequality
    11·2 answers
  • Use long division to convert the rational number to its equivalent decimal form. Upload a document showing all your work. 5/8
    12·2 answers
  • When David first got a job, his annual income was $20,000. He worked hard and got more experience. After 8 years, he realized th
    14·1 answer
  • You have a bank account that you go to every week. The account initially has $500. You take out 50% of the amount and put in 20%
    12·1 answer
  • A kid has 650 Joules of potential energy when they are the top of their swing. If the height is 1.3 meters, what is the mass of
    10·1 answer
  • The total cost (c) in dollars of renting a car for n days is given by the inequality LaTeX: c\ge125+50nc ≥ 125 + 50 n. What is t
    5·1 answer
  • If you were given a fractional strip, that did not have any subdivisions marked like this one pictured below, how would you dete
    12·1 answer
  • Can someone help me pretty please?
    14·2 answers
  • THIS IS A EMERGENCY IM FAILING so BADDD i fell off in 9th grade now im getting 50%
    9·1 answer
  • Given sin⁡θ=1/2 determine the value of sec θ. 0°&lt;θ&lt;90°
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!