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3 years ago

Boys Girls

Mathematics

1 answer:

DanielleElmas [232]3 years ago

8 0

Answer:

B) 36 girls will choose the zoo

Step-by-step explanation:

The data from sample gathered is

Boys Girls

Zoo 15 8

Museum 10 12

Total 25 20

The question asks about what will the data for 90 girls and 78 boys will look like. We can use the data as proportion and make the expected value for the new data. There are 90 girls in the question and the sample is 20 girls, so it's 90/20= 4.5 times larger than the sample. The expected data will be:

Girls

Zoo 8 x 4.5 = 36

Museum 12 x 4.5 = 54

Total 20x 4.5 = 90

The number of boys is 78 while the sample is 25, the data will be

Boys

Zoo 15 x 78/25 = 46.8

Museum 10 x 78/25 = 31.2

Total 25x 78/25 = 78

The answer will be 36 girls will choose the zoo

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4 1/3 - 1 2/3 how to solve this please

8_murik_8 [283]

Answer:

$2\frac{2}{3}$

Step-by-step explanation:

1) Convert $4\frac{1}{3}$ to improper fraction. Use this rule: $a\frac{b}{c} =\frac{ac+b}{c}$ .

$\frac{4\times3+1}{3} -1\frac{2}{3}$

2) Simplify 4 * 3 to 12.

$\frac{12+1}{3}$

3) Simplify 12 + 1 to 13.

$\frac{13}{3} -1\frac{2}{3}$

4) Convert $1\frac{2}{3}$ to improper fraction. Use this rule: $a\frac{b}{c} =\frac{ac+b}{c}$ .

$\frac{13}{3} -\frac{1\times3+2}{3}$

5) Simplify 1 * 3 to 3.

$\frac{13}{3} -\frac{3+2}{3}$

6) Simplify 3 + 2 to 5.

$\frac{13}{3} -\frac{5}{3}$

7) Join the denominators.

$\frac{13-5}{3}$

8) Simplify.

$\frac{8}{3}$

9) Convert to mixed fraction.

$2\frac{2}{3}$

(Decimal Form: 2.666667)

Thank you,
Eddie

3 0

2 years ago

Anybody know the answer???

igomit [66]

The sum of the two sides of the triangle must be greater than the third side, so

5<x<41 is the answer

8 0

3 years ago

Mrs Leon bought 6 rolls of toilet paper and 5 bottles of hand sanitizer for $32. Ms Ramirez bought 4 rolls of toilet paper and 1

zlopas [31]

Answer:

The cost of a roll of toilet paper is $2 and the cost of a bottle of hand sanitizer is $4.

Step-by-step explanation:

Given:

Mrs Leon bought 6 rolls of toilet paper and 5 bottles of hand sanitizer for $32.

Ms Ramirez bought 4 rolls of toilet paper and 1 bottle of hand sanitizer for $12.

Now, to find the cost for each item sold.

Let the cost of a roll of toilet paper be $x.$

And the cost of a bottle of hand sanitizer be $y.$

So, the cost of 4 rolls of toilet paper and 1 bottle of hand sanitizer:

$4x+y=12\\\\y=12-4x\ \ \ \ .....(1)$

Now, the cost of 6 rolls of toilet paper and 5 bottles of hand sanitizer:

$6x+5y=32$

Substituting the value of $y$ from equation (1):

$6x+5(12-4x)=32$

$6x+60-20x=32$

$60-14x=32$

Subtracting both sides by 60 we get:

$-14x=-28$

Dividing both sides by -14 we get:

$x=2.$

The cost of a roll of toilet paper = $2.

Now, substituting the value of $x$ in equation (1):

$y=12-4x\\\\y=12-4\times 2\\\\y=12-8\\\\y=4.$

The cost of a bottle of hand sanitizer = $4.

Therefore, the cost of a roll of toilet paper is $2 and the cost of a bottle of hand sanitizer is $4.

7 0

3 years ago

9:45 on Tuesday Questions

Sergio039 [100]

Answer:

95°
85°

Step-by-step explanation:

Given angles are consecutive interior angles which sum up to 180°

9x + 14 + 8x + 13 = 180
17x = 180 - 27
17x = 153
x = 153/17
x = 9

Angles

9x + 14 = 9*9 + 14 = 81 + 14 = 95°
8x + 13 = 85°

8 0

3 years ago

5x = 35 full answer pls show your work

cupoosta [38]

5x=35
x=35/5 (/=divided)
x= 7

so you divide 5x by 5 to cancel out that 5 and then since you did it to that side you have to do it to the other side so you divide 35 by 5 and that equals 7 so you’re left with x=7

7 0

3 years ago

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