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uranmaximum [27]
3 years ago
13

1. If 9 students sharpen 18 pencils in 2 minutes, how many students will it take to sharpen 18 pencils in 1 minute?

Mathematics
1 answer:
Ad libitum [116K]3 years ago
6 0
A) If 9 students sharpen 18 pencils in 2 minutes,Then if the time is halved, it will take twice as many men to sharpen 18 pencils.Hence it will take 18 students to sharpen 18 pencils in one minute B) y & 1/x. Then y = K/x where K is our constant of proportionality.Then K = yx. When x = -64 and y = -16 then K = -64 * -16 = 1024. Option DC) When x = 3 y = 8. So for an inverse variation K as calculated from B = 3 * 8 = 24.Then when K = 24 and y = 6; we have 24 = 6x. Hence x = 4. Option A
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SOMEONE PLEASE HELP WILL MARK BRAINLIST
ra1l [238]

Answer:

The answer is 0.005.

Step-by-step explanation:

<u>When you divide any number by 10, you move the decimal point over to the left by </u>1 place.

If, for example, you were instead multiplying by 10, your answer would change to 0.5.

3 0
2 years ago
The ratio of orange juice concentrate to water that Zoe used to make orange juice yesterday was 3 : 7. She used 14 ounces if wat
Inessa05 [86]

Answer:

12:28

Step-by-step explanation:

yesterday the ratio would be 6:14 so then you double that to get 12:28

6 0
2 years ago
How many solutions does the following system of equations have? y=5/2x+2 and 2y=5x+8
Yuki888 [10]

Answer:

No solutions.

Step-by-step explanation:

y = 5/2x + 2

2y = 5x + 8

Plug the first equation into the second.

2(5/2x + 2) = 5x +8

5x + 4 = 5x + 8

<em>5x + 4 cannot equal 5x + 8, so this system of equations has no solutions.</em>

3 0
3 years ago
Brad purchased a bag of apples for $2 and b pounds of bananas for $0.50 per pound. He spent a total of $3. The total price of hi
Len [333]
0.5b+2=3
0.5b=3-2
0.5b=1
b=2
so brad purchased 2 pounds of bananas
3 0
3 years ago
For the function f(x) = (5-6x)^2, fine f^-1
Scorpion4ik [409]

Answer:

f(-1) = 121

Step-by-step explanation:

f(x) = (5-6x)^2 (First we will substitute x for -1)

f(-1) = (5-6(-1))^2 (Then we will combine like terms)

f(-1) = (11)^2 (Then we will square it)

f(-1) = 121 (You are done)

8 0
3 years ago
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