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3 years ago

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Question 5 of 10

1 answer:

Tanya [424]3 years ago

5 0

Answer:

idk

Step-by-step explanation:

sorry i need points

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ms. guerra picked 32 students to help her decorate her door. she picked 8 more girls than boys. what is the experimental probabi

katrin2010 [14]

Answer:

5/8

Step-by-step explanation:

First we need to figure out how many girls and boys there are.

g = girls

b = boys

g = b+8 ( eight more girls than boys)

b = g-8

There are 32 students)

g+b =32

Substitute b = g-8 into the equation

g + (g-8) = 32

Combine like terms.

2g-8 = 32

Add 8 to each side.

2g -8+8 = 32+ 8

2g = 40

Divide by 2

g = 20

There are 20 girls

The experimental probability of picking a girl is

girls/ total

20/32 = 5/8

4 0

3 years ago

The teacher is saying the answer is 7/15. how did she get that?

balu736 [363]

I think this is how
<span /><span><span><span>you change the - to a +
8/12 + -1/5 then
2/3+-1/5 then
10/15+-3/15

10+-3
---------
15

7/15
</span></span></span>

8 0

3 years ago

How many significant figures does the measurement 1.50 have?

Aleks [24]

Answer:

22+54

Step-by-step explanation:

5+3

7 0

3 years ago

Read 2 more answers

The sum of the radius of the base and the height of a solid cylinder is 37m. If the total surface area of the cylinder is 1628 m

MA_775_DIABLO [31]

Answer:

4618.14 $m^{3}$ or 4618 $m^{3}$

Step-by-step explanation:

From T.S.A = 2 $\pi$ rh + 2 $\pi$ $r^{2}$

where T.S.A = 1628 $m^{2}$

1628 = 2 $\pi$ rh + 2 $\pi$ $r^{2}$

1628 = ( rh + $r^{2}$ ) 2 $\pi$

by dividing both side by 2 $\pi$

$\frac{1628}{2\pi }$ = rh + $r^{2}$

259.10 = rh + $r^{2}$

rh = 259.10 - $r^{2}$

h = $\frac{259.10 - r^{2} }{r}$ <u> </u>(1)

From Radius + Height = 37

r + h = 37 <u> </u>(2)

by substituting eqn 1 into 2

r + $\frac{259.10 - r^{2} }{r}$ = 37

by multiplying r to both side

$r^{2}$ + 259.10 - $r^{2}$ = 37r

259.10 = 37r

r = $\frac{259.10}{37}$

r = 7.00 ≅ 7

From Eqn 2

r + h = 37

7 + h = 37

h = 37 - 7

h = 30

so Volume of a cylinder = $\pi r^{2} h$

V = $\pi$ * $7^{2}$ * 30

V = 4618.14 $m^{3}$ ≅ 4618 $m^{3}$

4 0

4 years ago

Read 2 more answers

A rectangle has sides that are 7 2/5 inches wide and 11 2/3 inches long what is the perimeter of the rectangle

eduard

Answer:

$38 |5|$

b is the answer

8 0

3 years ago