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2 years ago

If f(x) = 3x^2 + 2x, then find the value of y when x = -1.

Mathematics

1 answer:

loris [4]2 years ago

7 0

Answer:

Step-by-step explanation:

-1 to the power of 2 is 1

1 times 3 is 3

2 times -1 is -2

3+(-2)=1

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Given that mCD=20°, find mBC

frosja888 [35]

Answer:

70°

Step-by-step explanation:

$m\widehat {BC} = 90\degree - m\widehat {CD}$

$m\widehat {BC} = 90\degree -20\degree$

$m\widehat {BC} = 70\degree$

5 0

2 years ago

Problem A park has a large circle painted in the middle of the playground area. The circle is divided into 444 equal sections, a

Vladimir79 [104]

Answer:

25 $\pi\ m^2$

Step-by-step explanation:

Given that:

A large circle in the park has its middle part painted.

The circle is divided in 4 equal parts.

Radius of the circle = 10 meters

To find:

Area of each section of the circle, $A$ = ?

Solution:

Here, we need to find the area of the bigger circle first and then need to divide it into 4 equal parts to find out the answer.

First of all, let us have a look at the formula for area of a circle with given radius $r$ :

$Area = \pi r^2$

Here, $r = 10 m$

Putting the value in the above formula, we get:

So, area = $\pi 10^2 = 100\pi\ m^2$

Now, there are 4 equal parts of the circle, therefore area of each section will be equal.

Area of each section of the circle:

$\dfrac{100\pi}{4} = \bold{25 \pi}\ m^2$

7 0

2 years ago

Read 2 more answers

3.6x+(7.5*2736)=21600

faltersainse [42]

This answer is correct

3 0

2 years ago

Factor of 2x4+22x3+60x

horsena [70]

Remark

I don't know exactly what level you are in, but the obvious factors are

y = 2x*(x^3 + 11x + 30)

This gives one more factor somewhere around x = -11.3 . Notice that the minimum is around - 3000 or so. I don't think anyone is going to try and take this any further. My calculator figures out cubics and gives an answer of -11.23. There are two other roots but they are a complex pair.

Answer

factor 1: 2x

factor 2: x^3 + 11x^2 + 30

5 0

2 years ago

Help with this please its pretty easy

Gala2k [10]

Answer:

c=11/36

Step-by-step explanation:

i dont know if that what you want + what is the source of you question?

4 0

2 years ago