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
NISA [10]
3 years ago
8

I'm really confused about this question about Solving Systems by Elimination

Mathematics
1 answer:
velikii [3]3 years ago
4 0

Answer:

x=10

y=2

Step-by-step explanation:

1)add the equations and find what x is.

x-y=8

+x+y=12

—————

2x=20

— —

2 2

x=10

3)fill in x for the second equation.

x+y=12

since x=10,replace x with 10.

10+y=12.

subtract 19 from both sides.

10+y=12

-10 -10

—————-

y=2

You might be interested in
HELP!! 70 points will be given!<br> Picture included
kkurt [141]

Answer: a) -13/16

Step-by-step explanation: Start by setting equations equal and rearrange X^3 - x^2 + 1 = 0. Visual inspection of graph shows x between -1 and -1/2. Start with x = 3/4 plug in and calculate: just a little too small. Try going halfway towards -1: x =-7/8 Plug in and the answer is very far from 0. Go halfway back towards -3/4: -13/16 and the equality is very close.

8 0
3 years ago
Select the example which illustrates the distributive property of 7 × 39
Lemur [1.5K]

Answer:

d) 7(30 + 9) = 7(30) + 7(9)

Step-by-step explanation:

<u>Distributive method</u>:

  • a(b + c) = ab + ac

<u>Here given</u>:

  • 7 × 39

Among the option's:

<u>1st option</u> (7 + 3) (7 + 9) is wrong, changes <u>final answer</u>.

<u>2nd option</u> (7 × 30) + 9 is wrong, changes <u>final answer</u>.

3rd option 39 × 7 shows commutative property of multiplication.

<u>4th option</u> show distributive method.

3 0
1 year ago
Read 2 more answers
A rectangle has a length of 72 cm and a width of 56 cm. A second rectangle has the same area as this one, but its width is 21 cm
Anastaziya [24]

Answer:

192

Step-by-step explanation:

Well if the first rectangle is 72 and 56, then we can find the area of that by multiplying length times width which would be 4032, so that would be the area of the second one. then we divide 4032 by 21, which is 192.

P.S, This is my first question answered, so if im wrong please let me know, thank you!

3 0
2 years ago
Please answer this asap
Mandarinka [93]

Answer:

I think it's division property and x = 6

5 0
3 years ago
I need help determining how many roots
statuscvo [17]

By graphing the polynomial, we conclude that there is only one real root, so the correct option is A.

<h3>How many roots has the given polynomial?</h3>

We have the polynomial:

y = -3x^2 + 12x - 12

To see how many real roots this polynomial has, we can graph it and see how many times the graph intercepts the x-axis.

The graph can be seen below:

There we can see that there is only one intercept, so there is only one real root.

So the correct option is A.

If you want to learn more about polynomials:

brainly.com/question/4142886

#SPJ1

4 0
2 years ago
Other questions:
  • Liam paid $2.40 tax on his new hat. What was the price of the hat if tax is 6%
    8·1 answer
  • What are the zeros of f(x) = x2 - 12x + 36?​
    7·1 answer
  • How do you write 14/20 as a percentage
    15·2 answers
  • 17 lb 2 oz − 6 lb 4 oz = pls help by saying blank pounds blank ounces thk
    7·2 answers
  • 05.01 MC)
    9·1 answer
  • Find the coefficient of the 4th term in expansion of (x +2 )^5
    8·1 answer
  • Mutually exclusive..​
    9·1 answer
  • 10
    6·1 answer
  • I NEEEEEEEEEEEEEEEED HELP!!!!!!!<br><br><br><br><br><br><br><br><br><br><br><br> What is 1 + 1?
    6·2 answers
  • There are 15 apples but 1.3 we’re ate how many are left
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!