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Alex17521 [72]
3 years ago
10

(10x^2+3x+9)+(5x^2+x+4) (10x 2 +3x+9)+(5x 2 +x+4)

Mathematics
1 answer:
BARSIC [14]3 years ago
4 0

Answer:

50x^4 +25x^3 +103x^2 +25x +49

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My question is 7/8*8/9
Tom [10]
7/8*8/9 = (7*8)/(8*9)
Since we have an 8 both above and below, we can erase it, and so the answer is 7/9
6 0
3 years ago
Which point on the number line represents the approximate volume of a cone with the radius of 3 units and a height of 4 units? U
alekssr [168]

Answer: Third red dot after 30 on the number line represents the approximate volume of a cone.

Step-by-step explanation:

Since we have have given that

Radius of cone = 3 units

Height of cone = 4 units

So, Volume of cone is given by

Volume=\frac{1}{3}\pi^2\times h\\\\Volume=\frac{1}{3}\times 3.14\times 3\times 3\times 4\\\\Volume=37.68\ units^3

Hence, Third red dot after 30 on the number line represents the approximate volume of a cone.

5 0
3 years ago
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John can type 2/3 of a manuscript in 12 hours. If he is joined by Laura, they can complete the typing in 2 hours. How many hours
Sonja [21]
Hello there,

1/18 + 1/x = 1/2 
<span>1/x = 9/18 - 1/18 </span>
<span>1/x = 8/18 = 4/9 </span>
<span>x = 9/4 or 2.25 
</span>
Glad to help!

-HotTwizzlers
6 0
3 years ago
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Grade 10 math help please. Please show work
masha68 [24]

Answer:

43.94?

Step-by-step explanation:

I think if you use inverse cos you should get the correct number. So, to find cos, you need to know the adjacent side and the hypotenuse. Here, the reference angle would be the person holding the kite. The distance from the person to the barn is the adjacent side, which is 18. The string of the kite, I assume, would be 25.

cos(∅) = \frac{18}{25}

cos(∅) = 0.72

cos⁻¹(0.72) = 43.94

I don't know if that's what you're looking for, but... If it's not correct, lmk so I can rewrite it. :)

4 0
3 years ago
When resting, Tara’s heart beats 68 times a minute. Explain why this is an example of a unit rate?
Eduardwww [97]

There are two variables here, which are time (minutes) and the number of beats, and they both have a relationship (68 beats in one minute), therefore it is an example of a unit rate

4 0
3 years ago
Read 2 more answers
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