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3 years ago

What is the value of x?. Round to the nearest tenth, if necessary. X = 6 x = 6. 3 x = 7 x = 9. 2.

Mathematics

1 answer:

Ratling [72]3 years ago

7 0

Answer:

Step-by-step explanation:

hope this helped <3

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Answer:

-10a + 2b - 3c

Step-by-step explanation:

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3 years ago

60 is 150% of what in math

Usimov [2.4K]

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3 years ago

John and 3 friends are going out for pizza for lunch. They split one pizza and 4 large drinks. The pizza cost $12.50. They spend

gladu [14]

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3 years ago

Big Ideas Math 7.4 Practice A 8th grade

ziro4ka [17]

Answer:

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Step-by-step explanation:

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3 years ago

Read 2 more answers

If a certain cannon is fired from a height of 8.8 meters above the ground, at a certain angle, the height of the cannonball ab

Dennis_Churaev [7]

Answer:

It would take approximately 6.50 second for the cannonball to strike the ground.

Step-by-step explanation:

Consider the provided function.

$h(t)=-4.9t^2+30.5t+8.8$

We need to find the time takes for the cannonball to strike the ground.

Substitute h(t) = 0 in above function.

$-4.9t^2+30.5t+8.8=0$

Multiply both sides by 10.

$-49t^2+305t+88=0$

For a quadratic equation of the form $ax^2+bx+c=0$ the solutions are: $x_{1,\:2}=\frac{-b\pm \sqrt{b^2-4ac}}{2a}$

Substitute a = -49, b = 305 and c=88

$t=\frac{-305+\sqrt{305^2-4\left(-49\right)88}}{2\left(-49\right)}=-\frac{-305+\sqrt{110273}}{98}\\t = \frac{-305-\sqrt{305^2-4\left(-49\right)88}}{2\left(-49\right)}= \frac{305+\sqrt{110273}}{98}$

Ignore the negative value of t as time can't be a negative number.

Thus,

$t=\frac{305+\sqrt{110273}}{98}\approx6.50$

Hence, it would take approximately 6.50 second for the cannonball to strike the ground.

6 0

3 years ago