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3 years ago

How to solve an equation with x on both sides

Mathematics

2 answers:

VladimirAG [237]3 years ago

7 0

Could you give an example of one

Nitella [24]3 years ago

6 0

If there is an x on both sides add or subtract it. Here's an example: 2x+10=x+8
So subtract the x and get x=-2
Or if it's negative: 5x-6=9x-11
Subtract nine x and add the 6 on the other side
-4x=-5
So divide by -4 and get x=5/4

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Which of the following is an irrational number?

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The answer is B for that question.

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3 years ago

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saw5 [17]

Answer:

b, d, and e

Step-by-step explanation:

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3 years ago

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3 years ago

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After a 15% increase, a town has 115 people. What was the population before the increase?

Arte-miy333 [17]

Answer:

100 people

Step-by-step explanation:

Population Of People=115Percentagencrease=15%

The New Population corresponds to 115%

(That is 100+15)

We want to find the population that corresponds to 100% that is the original population.

Therefore Original Population;

 $\frac{100}{115}\times {115}{}$ 

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7 0

3 years ago

Ronin kicks a ball over the gate of the first floor balcony. The function h(t)=-36t^2+288t+9 can be used to model the height of

ale4655 [162]

Answer: 4 seconds

Step-by-step explanation:

Given: The function $h(t)=-36t^2+288t+9$ can be used to model the height of the ball where t is the time in seconds after the ball kicked and h(t) is the height in feet.

Differentiate the given function with respect to t , we get

$h'(t)=-36(2)t+288=-72t+288$

Put h'(t)=0

$\Rightarrow\ -72t+288=0\Rightarrow\ t=\dfrac{288}{72}\\\\\Rightarrow\ t=4$

Also, $h''(t)=-72$

By second derivative test, h(t) is maximum at t=4.

Hence, the time in Devon which the ball reaches it maximum height = 4 seconds

3 0

3 years ago