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Aleks [24]
4 years ago
14

What method would you choose to solve the equation 2x^2-7=9

Mathematics
2 answers:
Murljashka [212]4 years ago
6 0
If you're trying to solve for X, the answer would be 2.8: hope this helps, have an amazing day :)
Tresset [83]4 years ago
3 0
I would first find x² because there is only one variable term. 2x²=16, x²=8, x=±2√2=±2.828 approx.
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Please hurry i’m taking a test
Viefleur [7K]

Answer: 9.2 inches

Step-by-step explanation:

We know that the sports stadium is 180 ft tall and that  in the scale model there is 2 in for every 30 ft. If we divide 180 by 39 we get 4.6. There is 2 in for every 30 ft, so the answer would be 4.6 x 2 or 9.2 in.

6 0
3 years ago
A 1622 kg car has a speed of 11.3 m/s when
svetoff [14.1K]
KE = 1/2mv^2
1/2(1622)(11.3)^2 = 103557 J when the car hits the tree.
But since the car came to a stop, there is no motion, no kinetic energy
7 0
3 years ago
A 0.025 kg bullet enters a 2.35-kg watermelon with a speed of 217 m/s
elena-14-01-66 [18.8K]

Answer:

1.15m/s

Step-by-step explanation:

Given data

m1=0.025 kg

m2= 2.35kg

u1= 217 m/s

v1= 109 m/s

u2= 0

v2=???

Applying the law of conservation of linear momentum

m1u1+m2u2=m1v1+m2v2

substitute

0.025*217+2.35*0= 0.025*109+2.35*v2

5.425= 2.725+ 2.35v2

5.425-2.725=2.35v2

2.7=2.35v2

divide both sides by 2.35

v2= 2.7/2.35

v2=1.15 m/s

Hence the speed of the watermelon will be 1.15m/s

6 0
3 years ago
Consider the two functions which statement is true
Ganezh [65]

Answer:

I think it's C

Step-by-step explanation:

Because the line is straight up and it on -2

Hope this helps if it's wrong i'm sorry but i hope it's right.:)

8 0
3 years ago
Solve sqrt of 2x+6-4=0. Show work.
Lerok [7]
2x+6-4=0
First combine like terms:
2x+2=0
Then subtract +2 from both sides:
2x+2=0
-2. -2
Now: 2x=-2
After that you divide both sides by positive 2
And X= -1

4 0
4 years ago
Read 2 more answers
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