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
zloy xaker [14]
3 years ago
8

Solve using elimination. 9x + 4y = -6 -7x + y = -20

Mathematics
1 answer:
zaharov [31]3 years ago
3 0
9x+4y=-6
4(-7x+y=-20)

9x+4y=-6
-(-28x+4y=-80)

37x=74

x=74/37

x=2


You might be interested in
Sari's mom went to the store to buy some grapes,apples and bananas. The total mass of the fruit is 72kg. She bought 18kg of grap
il63 [147K]

Answer: 25kg

Step-by-step explanation:

18 + 29 = 47

72 - 47 = 25

She got 25kg of bananas.

4 0
3 years ago
I really need help with these two questions. I wrote what I think they are, but I'm not sure. Please help me double check them.
guapka [62]

1. The first polynomial listed is just the number 9.

We can identify two key things here:

There is one term, so it's a monomial.

There are no factor's, so it has a degree of 0, or is constant.

Your answer is correct.


2. In the next polynomial, we can identify the same things:

There are three terms, so it's a trinomial.

The degree of the polynomial is determined by observing the higher power in a given term, in this case, it's three.

The prefix for relating to a multiple of three is cubic, we so know that this is a cubic trinomial.

Your answer is correct again, well done!

5 0
3 years ago
What number must you add to complete the square?
eimsori [14]

Answer:

36

Step-by-step explanation:

x^2 + 12 x  = 40

To complete the square, take the coefficient of the x term

12

Divide by 2

12/2 = 6

Square it

6^2 = 36

Add 36 to each side

8 0
3 years ago
You decide to buy locally sourced watermelon for your food truck. You meet with a farmer on Long Island that has a rectangular w
ASHA 777 [7]

Answer:  126.48x+109.56  would be the largest possible perimeter if the area is 1000x + 750.

Step-by-step explanation:  Not 100% certain of this answer.

find square root...

31.62x+27.39

that would give us 4 sides and since perimeter of rectangle is 2l+2w...

4(31.62x+27.39)=

126.48x+109.56 would be the largest possible perimeter if the area is 1000x + 750.

3 0
3 years ago
Lines
kirill [66]

Answer:

line r: y=-2x-2

line s: -2x+1

lime t: -2x+3

Step-by-step explanation:

every slope must be -2 since that's stated in the question

to find b in y=mx+b, you substitute 0 for x and the y coordinate when x is 0 into the equation (for example for slope r, when x is 0 then y is -2, so -2=-2(0)+b) then solve for b (-2=-2(0)+b is -2=b)

basically, b is the y component when x is 0

8 0
3 years ago
Read 2 more answers
Other questions:
  • 2) The sum of the measures of angle X and angle Y is 90. If the measure of angle X is 30 less than twice the measure of angle Y,
    8·2 answers
  • Evaluate the function f(x)=x+4 when x=3.
    6·1 answer
  • Janice bought 40 shares of stock at $31.82 per share. She received dividends of $1.11 per share for 1 year. What was her purchas
    5·2 answers
  • What percentage is of the budget is spent on housing and food?
    5·2 answers
  • PLLLLLLL ZZZZ HELP (MATH) (: ILL MAKE U BRAINLIST IF THE ANSWER IS RIGHT! :)
    12·2 answers
  • What was the price of the camera after the increase?
    10·1 answer
  • Find the radius or diameter of each circle with the given dimension (Will give brainliest to correct answer)
    5·1 answer
  • I really need this a please help me
    15·1 answer
  • Andrea has a jug containing 1.5 liters of chocolate milk. She fills one cup with 250 milliliters and another cup with 0.6 liters
    10·2 answers
  • How would you write 6 × 6 × 6 × 6 as an exponential expression?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!