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Gennadij [26K]
2 years ago
8

For every three girls taking classes at a martial arts school, there are 4 boys who are taking classes. If there are 236 boys ta

king classes, predict the number of girls taking classes at the school
Mathematics
1 answer:
Novosadov [1.4K]2 years ago
8 0

Answer:

177 girls

Step-by-step explanation:

We get 177 girls by multiplying 236 by 0.75. We do this because 236 divided by 4 is 59. 59 is what we would multiply 3 by. Alternitivly, we can multiply 236 by 0.75 because there would only be 3/4 of the total amount of girls.

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John has 2,456 pennies in his coin collection. He has the same number of pennies in each of 3 boxes. Estimate to the nearest hun
slega [8]
<span>In order to determine how many pennies John has in each box, we have to divide 2,456 (total number of pennies) by 3 (total number of boxes). This means there are 819 (rounded) pennies in each one of John's boxes.</span>
7 0
3 years ago
A scientist used 786 milliliters of a liquid for an experiment. How many liters of the liquid did the scientist use for this exp
Virty [35]
The answer is d , i hope this helps !
8 0
2 years ago
Read 2 more answers
in a farm 6084 trees aer planted in such a way that there are as many trees in a row as there are row. how many rows are there?​
Leno4ka [110]

Answer:

78 trees

Step-by-step explanation:

No. of trees planted = Area of square

No. of trees planted = 6084

Row = side of square

Side = √(Area)

Side = √(6084)

Side = 78 trees

7 0
3 years ago
Which equation does not represent a direct variation?
tatuchka [14]
Okay I think there has been a transcription issue here because it appears to me there are two answers. However I can spot where some brackets might be missing, bear with me on that.

A direct variation, a phrase I haven't heard before, sounds a lot like a direct proportion, something I am familiar with. A direct proportion satisfies two criteria:

The gradient of the function is constant s the independent variable (x) varies

The graph passes through the origin. That is to say when x = 0, y = 0.

Looking at these graphs, two can immediately be ruled out. Clearly A and D pass through the origin, and the gradient is constant because they are linear functions, so they are direct variations.

This leaves B and C. The graph of 1/x does not have a constant gradient, so any stretch of this graph (to y = k/x for some constant k) will similarly not be direct variation. Indeed there is a special name for this function, inverse proportion/variation. It appears both B and C are inverse proportion, however if I interpret B as y = (2/5)x instead, it is actually linear.

This leaves C as the odd one out.

I hope this helps you :)
4 0
3 years ago
Please show all work!! this is algebra.
Mnenie [13.5K]
Franco:
3x+2y=19
Caryl:
2x+4y=24

now use elimination

-2(3x+2y=19)
1(2x+4y=24)
=
-6x-4y=-38
2x+4y=24
add them together
which equals -4x=-14
divide both sides by -4
-4x/-4=-14/-4
x=7/2


we found x, so we subsitute it into the the original equation

3x+2y=19
3(7/2)2y=19
2y+21/2=19
-21/2 -21/2
2y=17/2
divide by 2 on both sides
2y/2= 17/2/2
y=17/4

so x= 7/2 and y= 17/4


8 0
1 year ago
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