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navik [9.2K]
3 years ago
5

Solve the system of linear equations by elimination. 9x−2y=349x−2y=34 5x+2y=−6

Mathematics
1 answer:
stealth61 [152]3 years ago
4 0
So combine all the x and the Y on the left side and the coefficients on the right and then multiply the variable (x or Y) by the number needed for both. and then whichever variable you have left (x or y) will equal the coefficient and then divide by the coefficient
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Aneli [31]

Answer:

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4 0
2 years ago
A catapult launches a boulder with an upward velocity of 120 ft/s. The height of the boulder, h,
Vlad1618 [11]

Answer:

Reaches a maximum height of 235.00 feet in 3.75 seconds.

Step-by-step explanation:

The height of the boulder, h,  in feet after t seconds is given by the function is given by :

h=-16t^2+120t+10 .....(1)

For maximum height, put \dfrac{dh}{dt}=0

i.e.

\dfrac{d(-16t^2+120t+10)}{dt}=0\\\\-32t+120=0\\\\32t=120\\\\t=3.75\ s

Put t = 3.75 in equation (1). So,

h=-16(3.75)^2+120(3.75)+10\\\\h=235\ \text{feet}

So, the boulder's maximum height is 235 feets and it takes 3.75 s to reach to its maximum height.

3 0
2 years ago
Any irrelevant information will be reported. Please help.<br> Find the slope:
Mariulka [41]

Answer:

Okay so if find the slope wouldn't it be x + 5 = 4

Step-by-step explanation:

I'm so sorry if its not correct please let me know so I can fix my mistake

7 0
2 years ago
Read 2 more answers
What is the least common denominator for the fractions 56and38?
maw [93]

Answer:

The least common factor is 18

Step-by-step explanation:

  • what you need to do is subtract 56 - 38 = 18
  • It would 56/18 and 36/18

  • Hope this helps
  • Hope this is right
  • Ask me questions

7 0
3 years ago
Read 2 more answers
Which number is greater 0.3 or -0.7? Explain
liubo4ka [24]
0.3 if a higher number because anytime there is a negative that means the number is below zero. 0.3 is barley above 0. But -0.7 is below zero
5 0
2 years ago
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