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Elenna [48]
3 years ago
7

Solve this question ​

Mathematics
2 answers:
Natalija [7]3 years ago
8 0
I think the answer is 80
ryzh [129]3 years ago
7 0

Answer:

80

Step-by-step explanation:

Initial ratio:

Teachers to students

1 : 15

Ratio after:

Teachers to students

3 : 40

The number of students did not change, so we can make the students of the initial ratio and the students of the ratio after the same.

1 : 15 =  8 : 120

3 : 40 = 9 : 120

120 units = 1200

1 unit = \frac{1200}{120} =10

Initial teachers = 8 units = 8*10=80

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A cube has a volume of 64 cm3. What is the length of a side of a cube
Reil [10]

Answer:

V=8cm

Step-by-step explanation:

V=a³

a=∛64


7 0
3 years ago
If 4x plus 7 equals 18, what is the value of 12x plus 21
8_murik_8 [283]

Answer:    54

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

6 0
3 years ago
Find the surface area of the sphere with the given dimension. Leave your answer in terms of pi.
Brrunno [24]
The surface area of the sphere:
A = 4 r² π 
1 ) r = 60 m;
A = 4 · 60² π = 4 · 3600 π = 14,400 π m²
2 ) Diameter of 14 cm:
r = 14 cm / 2 = 7 cm
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5 0
3 years ago
What is this? Please help
larisa [96]

Answer:

y=-34

Step-by-step explanation:

-51÷3=-17

-17×2=-34

Please mark me brainliest and thank me

5 0
2 years ago
40 POINTS PLEASE HELP AND HURRY
pentagon [3]

Answer:

The histogram that represents the correct frequency of each class interval in the given data set, is: histogram B.

What is a Histogram?

A histogram is a type of bar graph that uses bins to represent the frequency of a class interval.

Given the data points above, the histogram in option B has the correct bars that represent the appropriate frequency of each class interval.

Therefore, the histogram that represents the data set given is Histogram B.

Learn more about histograms on:

brainly.com/question/18198700

Please Do this:

<h2><u><em>Please give me brainleist!</em></u></h2>

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2 years ago
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