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creativ13 [48]
3 years ago
13

Please show working for these 2 questions.

Mathematics
1 answer:
earnstyle [38]3 years ago
5 0
Question 6a:
Volume of the sand = 1/3π(10)²(25) = 2618 cm³

Answer: 2618 cm³

Question 6b:
 2618 cm³ = 1 hour
 2618 cm³ = 60 mins
 2618 cm³ = 3600 seconds
0.73 cm³ = 1 second

Answer: 0.73 cm³/s

Question 7a:
Volume = (1 x 10 x 10) + 1/2(1 + 2) x 10 x 10 = 100 + 150 = 250 m³

Answer: 250 m³

Question 7b:
250 m³ = 250 kl
1 kl = $1.98
250kl = $1.98 x 250 = $487.50

Answer:  $487.50
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<img src="https://tex.z-dn.net/?f=%28%20%5Cfrac%7B1%7D%7B5%7D%20%29%20%7B%7D%5E%7Bx%7D%20%3D%20125" id="TexFormula1" title="( \f
anzhelika [568]

Well we know that...a^{-1}=\frac{1}{a^{1} }\\.

So...(\frac{1}{5})^{-1}=\frac{1}{\frac{1}{5}^{1}}=5\\\\.

Because 5^{3}=125,

\frac{1}{5}^{-1*3}=125\\  x=-1*3=-3

answer: -3

8 0
3 years ago
Do this yaayayyayaya brainliest for all thanks so much!!
Ugo [173]

Answer: -5 - (-10 )= 5

Step-by-step explanation:

 The arrows on the number line stops at -5 and -10 so you subtract -5 minus -10 and get your anwser 5

3 0
3 years ago
Identify which equations have one solution, infinitely many solutions, or no solution.
notsponge [240]
First one= x=5
second one= x=1/30 or 0.03 or 30^-1
third one= All real numbers or R
fourth one= No solution
Fifth one= All real numbers or R
Sixth one= p=-10/3 or -3 1/3 or -3.3

R is just the symbol for all real numbers. Also know as infinitely many solutions.

Hope this helps ! :) have a good day! Make sure you eat.
7 0
3 years ago
Could someone pls explain me
Fiesta28 [93]
Hi! im in 7th and learning this, its 26x9 and then minus that by 9x9
5 0
3 years ago
Where do I find my work I did with a tutor?
OlgaM077 [116]
It should come up as a notification. Check your messages or press “tutor” maybe even try reloading the page.
8 0
2 years ago
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