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erma4kov [3.2K]
3 years ago
15

Can someone help me with this

Mathematics
2 answers:
lakkis [162]3 years ago
5 0

Answer:

75% water

Step-by-step explanation:

64/4=16, 48/16=3 3/4=0.75

sasho [114]3 years ago
4 0

Answer: 2. 75% water.

Step-by-step explanation:

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The sum of a number and seven is less than 12
marin [14]

Answer:

Step-by-step explanation:

X+7 < 12

3 0
3 years ago
What is the maximum area for a rectangle whose perimeter is 48 meters?
MakcuM [25]

Answer:

12m²

Step-by-step explanation:

For a rectangle, with length L and width W,

the perimeter is given as

Perimeter,

P = (2 x Length)  + (2 x Width)

P = 2L + 2W

It is given that the perimeter is 48, hence

48 = 2L + 2W   (divide both sides by 2)

24 = L + W

or

L = 24 - W -----> eq 1

Also realize that the Area of a Rectangle is given by

A = L x W  -----> eq 2

Substituting eq 1 into eq 2,

A = (24 - W) x W

A = -W² + 24W

Recall that for a quadratic equation y = ax² + bx + c, the maxima or minima is given by y(max) =  -b/2a

In this case, b = 24 and a = -1

-b/2a = -24/[ 2(-1) ] = 12

Hence for A to be maximum A(max) = 12m² (Answer)

5 0
3 years ago
A class has 216 pupils one third are boys how many are girls ?
harina [27]
144 girls , 1/3 = 72 , 2/3 = 144
5 0
3 years ago
What are the mean and the mode of the following sets of data 5 12 1 5 7
Alik [6]
To find the mean (average), u add up all ur numbers, then divide by how many numbers there are.
mean = (5 + 12 + 1 + 5 + 7) / 5 = 30/5 = 6

To find the mode (and there does not have to be one)...u find the number that is used the most. That number would be 5...because it is used twice, whereas, the other numbers are just used once.
6 0
3 years ago
Read 2 more answers
94 POINTS!!! pls help
svp [43]

Answer:

Hey love! x = 6

Step-by-step explanation:

because 13 x 6 = 78

HOPE THIS HELPS!

7 0
3 years ago
Read 2 more answers
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