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EastWind [94]
3 years ago
13

Micah can fill a box with books in 15 minutes. While Micah fills the box, Sydney takes the books out puts them on a shelf. With

Sydney taking books out of the box, it takes 20 minutes for Micah to fill the box.
Which of the following can be used to determine the amount of time it takes for Sydney to empty the box if Micah is not adding books?

a. 1 over 15 minus 1 over 20 equals 1 over x
b. 1 over 20 minus 1 over x equals 1 over 15
c. 1 over 15 minus 1 over x equals 1 over 20
d. 1 over 15 minus 1 over x equals x over 20
Mathematics
1 answer:
vova2212 [387]3 years ago
4 0
Micah's velocity = 1 box / 15 minutes = 1/15 box/minute

Sidney's velocity = 1/x

Micah's velocity - Sidney's velocity = 1 box / 20 minutes = 1/20 box/mitue


1/15 - 1/x = 1/20

1/x = 1/15 - 1/20

Answer: option a. 1/15 - 1/20 = 1/x

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Part of a tiling design is shown. The center is a regular hexagon. A square is on each side of the hexagon, and an equilateral t
VMariaS [17]

1,119.6 in. the answer is c my diddle.


Find the area of the hexagon which is 259.81

Find the area of the squares which is (6)100

Find the area of the triangles which was (6)43.3

259.81 + 600 + 259.8

519.6 + 600 = 1119.6

8 0
3 years ago
A Triangular Park ABC has sides 120 m, 80m and 50m. a gardener has to put a fence all around it and also plant grass inside. How
Vadim26 [7]

The perimeter = sum of all sides

= 120 + 80 + 50

= 250

So 250 - 3

247

Left space for gate

Now cost of fencing = Rs 20/per meter

= 247 × 20

= Rs 4,940

Now the area of the triangular park can be found using heron's formula

S = (a+b+c)/2

S = (120+80+50)/2

S = 250/2

S = 125

Now

Herons formula = √s(s-a)(s-b)(s-c)

√125(125-120)(125-80)(120-50)

√125(5)(45)(70)

√5×5×5×5×5×3×3×5×14

After Making pairs

5×5×5×3√14

375√14

Therefore 375√14m is the area of the triangular park

Must click thanks and mark brainliest

7 0
3 years ago
Read 2 more answers
Please help with number 16
Andre45 [30]

Answer:

2) reflexive property

3) given

4) substitution postulate

5) substitution postulate

6) addition postulate

7) partition postulate

8) equal length line segments are congruent

9) SSS theorem

Step-by-step explanation:

7 0
3 years ago
what is the similarity ratio of the smaller to the larger similar cylinders? enter your answer as a:b​
Andre45 [30]

Answer:

2 : 3

Step-by-step explanation:

Given:

The two cylinders are similar. So, their corresponding dimensions must be in proportion.

\frac{\textrm{Radius of small cylinder}}{\textrm{Radius of larger cyclinder}}=\frac{12}{18}=\frac{2}{3}=2:3

\frac{\textrm{Height of small cylinder}}{\textrm{Height of larger cylinder}}=\frac{20}{30}=\frac{2}{3}=2:3

Therefore, the similarity ratio of the smaller to the larger similar cylinders is 2 : 3.

4 0
3 years ago
Please help I don’t know it
navik [9.2K]

Answer:

109

Step-by-step explanation:

3 0
3 years ago
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