3 years ago

What number would you add to both sides of x^2+7x=4

1 answer:

5 0

The answer to this question is (7/2)^2. The completion of the square involves that we take the coefficient on the x^1 term, halve it, and then square it.

You might be interested in

Subtract. Express your answer in simplest form 3 1/4 - 2 3/4

lord [1]

The answer to this is .5 or 1/2.

3 0

3 years ago

Read 2 more answers

Find the value of x. 75° 3x° X = degrees

kipiarov [429]

Explanation:
Sum of all angles= 180 degrees

So,
3x + 75= 180
3x= 180 - 75
3x= 105
x= 105/3
x= 35

Answer= 35 degrees

5 0

2 years ago

Find the volume of the conical paper cup.

Tanya [424]

Answer:

i think it is A sorry if I am worng

3 0

3 years ago

Read 2 more answers

5y - (21x + 7) Which is the correct description

belka [17]

Answer

-21x + 5y - 7

Did this help?

Step-by-step explanation:

7 0

3 years ago

Jason knows that the equation to calculate the period of a simple pendulum is , where T is the period, L is the length of the ro

Brrunno [24]

Answer-

$\boxed{\boxed{L=\dfrac{g}{4\pi^2 f^2}}}$

Solution-

The equation for time period of a simple pendulum is given by,

$T=2\pi \sqrt{\dfrac{L}{g}}$

Where,

T = Time period,

L = Length of the rod,

g = Acceleration due to gravity.

Frequency (f) of the pendulum is the reciprocal of its period, i.e

$f=\dfrac{1}{T}\ \Rightarrow T=\dfrac{1}{f}$

Putting the values,

$\Rightarrow \dfrac{1}{f}=2\pi \sqrt{\dfrac{L}{g}}$

$\Rightarrow (\dfrac{1}{f})^2=(2\pi \sqrt{\dfrac{L}{g}})^2$

$\Rightarrow \dfrac{1}{f^2}=4\pi^2 \dfrac{L}{g}$

$\Rightarrow L=\dfrac{g}{4\pi^2 f^2}$

8 0

3 years ago

Read 2 more answers