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lukranit [14]
3 years ago
15

Expand 4x(7x-11)expand 3x(7-5x)Can someone help me with tge questions above?

Mathematics
2 answers:
elixir [45]3 years ago
5 0
If  we had a number, or a single algebraic term, multiplying bracketed terms, then all terms in thebrackets must be multiplied.....
melamori03 [73]3 years ago
4 0
<span>(    7 x    -    11    )

<span>(   7   -   5x   )</span></span>
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It’s deducting 10 each
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2 years ago
Please help me :)))))
svetoff [14.1K]
Part a)

Answer: 5*sqrt(2pi)/pi

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

Work Shown:

r = sqrt(A/pi)
r = sqrt(50/pi)
r = sqrt(50)/sqrt(pi)
r = (sqrt(50)*sqrt(pi))/(sqrt(pi)*sqrt(pi))
r = sqrt(50pi)/pi
r = sqrt(25*2pi)/pi
r = sqrt(25)*sqrt(2pi)/pi
r = 5*sqrt(2pi)/pi

Note: the denominator is technically not able to be rationalized because of the pi there. There is no value we can multiply pi by so that we end up with a rational value. We could try 1/pi, but that will eventually lead back to having pi in the denominator. I think your teacher may have made a typo when s/he wrote "rationalize all denominators"

============================================================

Part b)

Answer: 3*sqrt(3pi)/pi

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

Work Shown:

r = sqrt(A/pi)
r = sqrt(27/pi)
r = sqrt(27)/sqrt(pi)
r = (sqrt(27)*sqrt(pi))/(sqrt(pi)*sqrt(pi))
r = sqrt(27pi)/pi
r = sqrt(9*3pi)/pi
r = sqrt(9)*sqrt(3pi)/pi
r = 3*sqrt(3pi)/pi

Note: the same issue comes up as before in part a)

============================================================

Part c)

Answer: sqrt(19pi)/pi

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

Work Shown:

r = sqrt(A/pi)
r = sqrt(19/pi)
r = sqrt(19)/sqrt(pi)
r = (sqrt(19)*sqrt(pi))/(sqrt(pi)*sqrt(pi))
r = sqrt(19pi)/pi
8 0
3 years ago
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Damian owns a small business selling bagels. He knows that in the last week 40 customers paid cash, 66 customers used a debit ca
PSYCHO15rus [73]

Answer:

Cash

Step-by-step explanation:

You got that money just have damian ask fo that cash$$$$$$

7 0
3 years ago
Read 2 more answers
A truck that can carry no more than 6600 lbs is being used to transport refrigerators and upright pianos. each refrigerator weig
ZanzabumX [31]

Answer:

(a). 300r + 425p ≤ 6,600

(b). No, it’s not considered overweight

Step-by-step explanation:

In this question, we are to write an equation that shows the number of refrigerators and pianos the truck could carry.

Let the number of refrigerators be r and the number of pianos be p

By using their individual weights, the equation is as follows;

300r + 425p ≤ 6,600

To the second question, we want to consider if 10 refrigerators and 8 pianos are overload.

To get this, we simply multiply the number of each by their individual weights;

That would be;

300(10) + 425(8) = 3000 + 3,400 = 6,400 lbs

This is not considered overweight as it is less than 6,600 lbs

6 0
3 years ago
A cube has sides of length 2 meters. Explain what happens to the volume of the cube if the length of the sides is doubled.
ohaa [14]
Volume of a cube with side lengths of 2, 2, and 2. 
2³=8 m³


Volume of a cube with 4,4, and 4
4³=64 m³

Conclusion: The volume would be squared, or square rooted, depending on which way you are going.
5 0
3 years ago
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