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3 years ago

7

A circle has a center at 3,5 the point 3,8 is On the circle. What is the circumference of the circle to the nearest tenth of a u

nit

1 answer:

Blizzard [7]3 years ago

7 0

28.3 units
thats answer for your question

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Calculate the amount of interest earned on a $2,000 investment made for 2 years at 3% p.a..

Mrrafil [7]

PxRxT
=$2,000 x 3% (0.03)
=$60 x 2 years
=$120
The answer is $120

8 0

3 years ago

The sum of 2 times a number and 4 equals 5

trasher [3.6K]

I need more information

3 0

4 years ago

Suppose you sequentially add 10 drops of water to a graduated cylinder and read the volume add 10 more drops read and so on. how

aleksandr82 [10.1K]

It depends on what is being referred to by "this."

The description of the activity is that 10 drops are added twice and two readings are taken. If you do *that* 4 times, then a total of 20*4 = 80 drops will have been added.

If the activity referred to by "this" is the pair of acts {add 10 drops, read the volume}, then four repetitions will have added 10*4 = 40 drops.

Probably the expected interpretation is that "this" is {add 10 drops, read}, so 40 drops is likely the expected answer.

3 0

3 years ago

Consider the quadratic function f(x)=−x^2+x+30

yaroslaw [1]

Answer:

The smallest xx-intercept is $x = -5$

The largest xx-intercept is $x = 6$

The yy-intercept is $y = 30$ .

Step-by-step explanation:

Given a quadratic function in the following format:

$f(x) = ax^{2} + bx + c = 0, a \neq 0$

The x-values of the x-intercepts are $x_{1}, x_{2}$ , given by the following formulas.

$x_{1} = \frac{-b + \sqrt{\bigtriangleup}}{2*a}$

$x_{2} = \frac{-b - \sqrt{\bigtriangleup}}{2*a}$

$\bigtriangleup = b^{2} - 4ac$

We have that:

$f(x) = -x^{2} + x + 30$

This is not in the format above. I will multiply by (-1), so we have:

$f(x) = x^{2} - x - 30$

So, $a = 1, b = -1, c = -30$

$\bigtriangleup = b^{2} - 4ac = (-1)^{2} - 4*(1)*(-30) = 1 + 120 = 121$

$x_{1} = \frac{-b + \sqrt{\bigtriangleup}}{2*a} = \frac{-(-1) + \sqrt{121}}{2(1)} = \frac{12}{2} = 6$

$x_{2} = \frac{-b + \sqrt{\bigtriangleup}}{2*a} = \frac{-(-1) - \sqrt{121}}{2(1)} = \frac{-10}{2} = -5$

This means that

The smallest xx-intercept is $x = -5$

The largest xx-intercept is $x = 6$

The y-intercept is the value of f(x) when x = 0. So

$f(x)=−x^{2}+x+30$

$f(0) = 30$

The yy-intercept is $y = 30$ .

5 0

3 years ago

Multiply or divide as indicated.

Rainbow [258]

5a^2 * 6a^4

=
5*6 * a^(2+4)

so that's a
30a^6

8 0

3 years ago