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3 years ago

Whats the problem help me

Mathematics

1 answer:

rusak2 [61]3 years ago

3 0

5*23*2
5*23=115
115*2=230

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1-908876655 percent

Dmitry [639]

Answer:

What is the question exactly?

Step-by-step explanation:

4 0

3 years ago

If A(3,4) and B(10,4) are the end points of a diameter of circle "O", what is the area of the circle O

ikadub [295]

Answer:

$\large\boxed{\dfrac{49\pi}{4}}$

Step-by-step explanation:

The formula of an area of a circle:

$A=\pi r^2$

r - radius

We have the endpoints of a diameter of a circle.

The formula of a distance between two points:

$d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}$

Substitute the coordinates of the given points A(3, 4) and B(10, 4):

$d=\sqrt{(10-3)^2+(4-4)^2}=\sqrt{7^2+0^2}=\sqrt{7^2}=7$

Therefore we have the length of the diameter: d = 7

We know: d = 2r. Therefore

$r=\dfrac{7}{2}$

Substitute to the formula of an area:

$A=\pi\left(\dfrac{7}{2}\right)^2=\dfrac{49\pi}{4}$

There is no such answer in the answers to choose.

Apparently you have some error in the coordinates of the endpoints.

8 0

3 years ago

A neighborhood swimming pool is the shape of a rectangular prism the pool measures 30 feet in length and 18 feet in width and ha

lesya [120]

Answer:

15,120 gallons of water

Step-by-step explanation:

to find the volume, your equation is

v=length * width * height

v=30*18*4=2160 feet cubed

2160*7=15120

6 0

2 years ago

in an experiment, the temperature dropped 2 degrees each day until the temperature reaches negative 5.5 degrees. if the starting

WITCHER [35]

$32.9-(-5.5)=38.4$
38.4/2=19.2
around 19 days

3 0

3 years ago

Determine the value of a if one solution to the quadratic equation is x equals 5 + 3/2 I

Sindrei [870]

The value of a is $\frac{-9}{4}$

Step-by-step explanation:

1. Determine the other solution of x

If one value is 5 + $\frac{3}{2}$ then the other value is 5 - $\frac{3}{2}$

2. Use reverse technique to find the equation

(5 + $\frac{3}{2}$ ) (5 - $\frac{3}{2}$ ) = 0

25 - $\frac{-15}{2}$ + $\frac{15}{2}$ - $\frac{9x^{2} }{4}$ = 0

- $\frac{9x^{2} }{4}$ + 25 = 0

3. The equation is - $\frac{9x^{2} }{4}$ + 25 = 0

4. Find the value of a

a is the number with the variable $x^{2}$ therefore it is - $\frac{9}{4}$

Keyword: quadratic equation, solution

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8 0

3 years ago