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nlexa [21]
3 years ago
6

Simplify.

7D%5E%7B2%7D%20%20-%209q%29" id="TexFormula1" title=" - (6p {}^{2} - q - 4) + (3 - p {}^{2} - 9q)" alt=" - (6p {}^{2} - q - 4) + (3 - p {}^{2} - 9q)" align="absmiddle" class="latex-formula">
​
Mathematics
1 answer:
valentinak56 [21]3 years ago
5 0
-7p(to the second power) -8q+7
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Rzqust [24]

Answer:

572.3

Step-by-step explanation:

Diameter = 27m

Radius = d / 2 = 27 / 2 = 13.5m

Area = pi x r²

= 3.14 x (13.5)²

= 3.14 × 182.25

= 572.3

5 0
2 years ago
Solve 6 and 7 please?
Charra [1.4K]

Hey!

---------------------------------------------------------------------

We know that (a = -3), (b = 2), (c = 5), and (d = -4)

---------------------------------------------------------------------

Question 6:

= 5ac - 2b

= 5(-3)(5) - 2(2)

= 5(-15) - 4

= -75 - 4

<u>= -79</u>

---------------------------------------------------------------------

Question 7:

= ab/d

= (-3)(2)/-4

= -6/-4

<u>= 1 1/2</u>

---------------------------------------------------------------------

Hope this helped, good luck!

6 0
3 years ago
Which equation calculates the number of 1/3-foot pieces that can be cut from a piece of
harina [27]

Answer:

7:\dfrac{1}{3}=21 pieces

Step-by-step explanation:

Suppose you have a 7 feet long wood.

You need to find how many \frac{1}{3}-foot pieces can be cut from this wood.

To find this number of pieces, you have to divide the whole length of the wood by the length of one piece:

7:\dfrac{1}{3}=\dfrac{7}{1}\cdot \dfrac{3}{1}=21

8 0
3 years ago
Integrate [0, 1/2] xcos(pi*x).
elena-14-01-66 [18.8K]
To answer your question, this could be the possible answer and i hope you understand and interpret it correctly:
<span>[Integrate [0, 1/2] xcos(pi*x
let u=x so that du=dx
 and v=intgral cos (xpi)dx
        v=(1/pi)sin(pi*x)
 integration by parts
uv-itgral[0,1/2]vdu just plug ins
 (1/pi)sinpi*x]-(1/pi)itgrlsin(pi*x)dx from 0 to 1/2
(1/pi)x sinpi*x - (1/pi)[-(1/pi) cos pi*x] from 0 to 1/2
 =(1/2pi)+(1/pi^2)[cos pi*x/2-cos 0]
=1/2pi - 1/2pi^2
=(pi-2)/2pi^2 ans</span>
3 0
2 years ago
What is the square root of 144??
Maksim231197 [3]
12, or -12
12*12 = 144
-12*-12 = 144
7 0
2 years ago
Read 2 more answers
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