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netineya [11]
3 years ago
14

Evaluate the function... I'm stuck on this question

Mathematics
1 answer:
hodyreva [135]3 years ago
3 0

Answer:

f(-1) = 3

Step-by-step explanation:

f(x) = -x^{2} - 4x

at x=-1

f(-1) = -(-1)^{2} - 4(-1)

f(-1) = -1 + 4

f(-1) = 3

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What is the y- intercept of the graph of 2x + y = -4?
Brrunno [24]

First write the equation in slope-intercept form which is more commonly known as <em>y = mx + b</em> form where the <em>m </em>or the coefficient of the x term represents the slope of the <em>b</em> or the constant term represents the y-intercept.

Subtract 2x from both sides to get <em>y = -2x - 4</em>.

I put the x term first because that's how it is in y = mx + b form.

Now we can see that the <em>b</em> or the constant term is -4.

We can write this as the ordered pair (0, -4).

Keep in mind when writing a y-intercept as an ordered pair, your x-coordinate will always be 0 in the ordered pair.

8 0
2 years ago
What is the volume of a cone with a diameter of 30 feet and a height of 600 feet? Use 3.14 for tt
Tomtit [17]

Answer:

the volume is about 1884

Step-by-step explanation:

v of cone= 1/3(pi)r^2h

diameter to radius is 30=5.477225575051661

so 1/3(3.14)5.477225575051661^2(60)

=1/3(3.14)30(60)

=1/3(5652)

=1884

hope this helps

7 0
2 years ago
Please help! I need to know what the answer to this is: -2(3a-b)= c
Leni [432]

-2(3a-b)= c

distribute

-6a +2b =c

add 6a to each side

2b = c+6a

divide by 2

b = c/2 + 3a

3 0
3 years ago
PLZZZ NEED HELP ASAPPPP!!!!!!!
frosja888 [35]
What do you need help with ma’am
7 0
3 years ago
Can someone help me with this?
garri49 [273]
The answer going to be -4
4 0
3 years ago
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