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4 years ago

Hurry!!!!!!!!!!!! Mark Brainliest!!!!!!!!!!!!!!!!!!!!!!

2 answers:

6 0

V=13π∗r2∗h
V=13π∗32∗9
V=13π∗9∗9
V=13π∗81
V=13∗81π
V=27π
V≈27∗3.14
V≈84.78
The volume is approximately 84.78 cubic feet

o-na [289]4 years ago

4 0

It's 1017.88 hope this helps

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Which of the following are solutions to 2x2 – 8x - 90? Select all that apply.

Bond [772]

Answer:

x=-5, x=9

Step-by-step explanation:

we know that

The formula to solve a quadratic equation of the form

$ax^{2} +bx+c=0$

is equal to

$x=\frac{-b\pm\sqrt{b^{2}-4ac}} {2a}$

in this problem we have

$2x^{2} -8x-90$

equate to zero

$2x^{2} -8x-90=0$

$2=-1\\b=-8\\c=-90$

substitute in the formula

$x=\frac{-(-8)\pm\sqrt{-8^{2}-4(2)(-90)}} {2(2)}$

$x=\frac{8\pm\sqrt{784}} {4}$

$x=\frac{8\pm28} {4}$

$x=\frac{8+28} {4}=9$

$x=\frac{8-28} {4}=-5$

therefore

The solutions are x=-5, x=9

6 0

3 years ago

Find the precent of change of 15 yards to 18 yards

Delvig [45]

Divide the current with the previous
18/15 = 1.2

move the decimal point to the right two places to get the percentage

120% is your answer

hope this helps

5 0

3 years ago

Read 2 more answers

How do you graph f(x)=-3x^2+5

UNO [17]

Answer:

Make sure you plot your points in a table and set it up on a graph

Step-by-step explanation:

3 0

4 years ago

Plz answer b I don't get it

rewona [7]

What is the question??

5 0

3 years ago

A university business school is interested in the difference of GPAs across majors. They collect a sample of 7 students from eac

nydimaria [60]

Answer:

Step-by-step explanation:

Hello!

For this it's been made an ANOVA for four different variables, this means, in the null hypothesis there were four population means tested. When you reject the null hypothesis, you can assume that at least one of the GPA for the four majors is different. To know which one is different, or, if the GPA of finance students is different from the accounting students, you'll have to do an individual test between these two populations.

Hope you have a SUPER day!

6 0

4 years ago