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Yanka [14]
3 years ago
5

Answers for both boxes please ​

Mathematics
1 answer:
GuDViN [60]3 years ago
5 0
Answer: (4,2). Explanation: In the elimination method you either add or subtract the equations to get an equation in one variable. When the coefficients of one variable are opposites you add the equations to eliminate a variable and when the coefficients of one variable are equal you subtract the equations to eliminate a variable. The Elimination Method
Step 1: Multiply each equation by a suitable number so that the two equations have the same leading coefficient. ...
Step 2: Subtract the second equation from the first.
Step 3: Solve this new equation for y.
Step 4: Substitute y = 2 into either Equation 1 or Equation 2 above and solve for x.
variable equation. It is relatively difficult to determine the values of x and y without manipulating the equations. If one adds the two equations together, the x s cancel out; the x is eliminated from the problem. Hence it is called the "elimination method”.
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What does 3x^2+8x-10 equal?
blsea [12.9K]

Answer:

0.927

Step-by-step explanation:

just plug it in to a algebraric calculator!

5 0
3 years ago
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Which could be the dimensions of a rectangular prism whose surface area is greater than 140 square feet? Select three options. 0
olya-2409 [2.1K]

Answer:

I think the answers are...

B. 6 feet by 5 feet by 4 feet

C. 7 feet by 6 feet by 4 feet

D.  8 feet by 3 feet by 7 feet

(I'm so sorry if it's wrong)

Hope this Helps!

4 0
3 years ago
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What is 25 mi/h expressed as meters per second?
arlik [135]

Answer:

11.176 meters/second

Step-by-step explanation:

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25 miles = 40233.6 meters

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1 minute = 60 seconds

1 hour = 3600 seconds

40233.6 / 3600,

11.176 meters/second

7 0
1 year ago
A submarine started the day at 1200 feet below sea level. The submarine rose 60 feet per hour during a 3-hour
Blababa [14]

Answer:

1,200 +3(60)

Step-by-step explanation:

1200 is where they started so every three hour period the submarine rises 60 ft per hour. So you multiply it by this and then 60. Positive because you are rising, and not going down.

5 0
3 years ago
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. Determine whether the polynomial is a perfect square and if it is, factor it.
Nataly_w [17]
Perfect Square Trinomials have first and last terms that are positive perfect squares. And the middle term is twice the product of the square roots of the first and third terms.

First term:

n^2

Square root = n \checkmark

Third term:

9

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9 * 1 = 9

9 * 2 = 18

18 \neq-9

Therefore it is not a perfect square trinomial.

4 0
3 years ago
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