All categories

3 years ago

,,,,,,,,,,hey help pls

Mathematics

1 answer:

blagie [28]3 years ago

3 0

Answer:

B and D

Step-by-step explanation:

Now, I know that B is definitely a function. However, D does look correct, but I'm not 100% sure.

I hope this helps you out! Have a lovely day.

You might be interested in

List the steps taken to find the area of a triangle. Find the area of the

ICE Princess25 [194]

Answer:

base x height / 2

I'm guessing 10 and 17 are the base and height

10 x 17 = 170

170 / 2 = 85

85 is the area

Hope this helps

Step-by-step explanation:

5 0

3 years ago

there are 20 ounces of water in a glass. someone drinks 55%of the water. how many ounces of water is left?

dimulka [17.4K]

Given:
20 ounces of water
someone finishes 55% of water
What is left?

20 × 0.55 (55% = $\frac{55}{100}$ = 0.55)
11

20 - 11 = 9
There are 9 ounces of water left

5 0

3 years ago

For what values of x is the graph of y equals negative 3 divided by the quantity 4 plus x concave downward?

Elena-2011 [213]

We are given our function as

$y=\frac{-3}{x+4}$

For finding concavity , firstly we will find second derivative

$y'=\frac{d}{dx}\left(\frac{-3}{x+4}\right)$

$=-3\frac{d}{dx}\left(\frac{1}{x+4}\right)$

$=-3\left(-\frac{1}{\left(x+4\right)^2}\right)\cdot \:1$

$y'=\frac{3}{\left(x+4\right)^2}$

now, we can find derivative again

$y''=\frac{d}{dx}\left(\frac{3}{\left(x+4\right)^2}\right)$

$=3\frac{d}{dx}\left(\left(x+4\right)^{-2}\right)$

$y''=3\left(-\frac{2}{\left(x+4\right)^3}\right)\cdot \:1$

$y''=-\frac{6}{\left(x+4\right)^3}$

now, we can know second derivative is undefined when denominator =0

so, we set denominator =0

and then we can solve for x

$x+4=0$

$x=-4$

now, we can draw a number line and locate x=-4

and then we can find sign of second derivative on each intervals

so,

Concave downward interval:

$(-4,\infty)$

6 0

3 years ago

Which are the independent events? Check all that apply

olya-2409 [2.1K]

Answer:

Independent events are those that do not depend on others. Two entities does not depend on each other. The change in one entity does not change the other.

So, independent events here are-

1. rolling a number cube twice.

2. flipping a coin 4 times.

3. choosing a meal combination.

Rest two options are dependent on each other.

4 0

4 years ago

Read 2 more answers

Hey I need help with 2+2

bulgar [2K]

Answer:

Step-by-step explanation: