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Varvara68 [4.7K]
3 years ago
9

Um...so I take my selective enrollment test for my selective high school and I was wondering, what website would be best for to

study???
Mathematics
1 answer:
Sholpan [36]3 years ago
5 0

Answer:

mathisfun.com

history.com

wikipedia.com


Step-by-step explanation:

brainliest answer please


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Jeff and Brett both play basketball at the country club. Jeff is a
Jet001 [13]

Answer:

8 times

Step-by-step explanation:

2 x 8 = 16

64 + 16 = 80

10 x 8 = 80

5 0
3 years ago
Suppose total benefits and total costs are given by b(y) = 100y − 8y2 and c(y) = 10y2. what is the maximum level of net benefits
olga nikolaevna [1]
Whenever you face the problem that deals with maxima or minima you should keep in mind that minima/maxima of a function is always a point where it's derivative is equal to zero.
To solve your problem we first need to find an equation of net benefits. Net benefits are expressed as a difference between total benefits and total cost. We can denote this function with B(y).

B(y)=b-c
B(y)=100y-18y²

Now that we have a net benefits function we need find it's derivate with respect to y.

\frac{dB(y)}{dy} =100-36y

Now we must find at which point this function is equal to zero.

0=100-36y
36y=100
y=2.8

Now that we know at which point our function reaches maxima we just plug that number back into our equation for net benefits and we get our answer.

B(2.8)=100(2.8)-18(2.8)²=138.88≈139.

One thing that always helps is to have your function graphed. It will give you a good insight into how your function behaves and allow you to identify minima/maxima points.


3 0
3 years ago
What is the volume of a square<br> pyramid with the base length of<br> 24in and a height of 18in?
gtnhenbr [62]

Answer:

V=3456

Step-by-step explanation:

V=a^{2}\frac{h}{3\\}

6 0
3 years ago
If x2 = 30, what is the value of x?<br> A. ±60 B. ±15 C. ±square root of 30 D.±square root of 15
anygoal [31]

Answer:

  C.  ±square root of 30

Step-by-step explanation:

Apply the square root function to both sides of the equation:

  \sqrt{x^2}=\sqrt{30}\\\\|x|=\sqrt{30}\\\\x=\pm\sqrt{30}

_____

The absolute value equation has two solutions. They match choice C.

6 0
3 years ago
A rectangular prism is 4 inches long, 3 inches wide and 8 inches tall . Eli packs the prism with unit cubes to find the volume.
bulgar [2K]

Answer:

V=96\ inch^2

Step-by-step explanation:

Given that,

A rectangular prism is 4 inches long, 3 inches wide and 8 inches tall.

We need to find the volume of the rectangular prism. The formula for the volume of prism is given by :

V=lbh\\\\V=4\times 3\times 8\\\\V=96\ inch^2

So, the volume of the prism is equal to 96\ inch^2.

6 0
3 years ago
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