Ask question

Ask question

All categories

Keith_Richards [23]

3 years ago

8

Kamisha is planning to conduct a survey at her school. She has decided to interview 7 out of 30 students. If there are 510 stude

nts at her school, how many students must kamisha interview?

1 answer:

alexgriva [62]3 years ago

3 0

510/30=17
17 groups of 30 7*17=119
She needs to interview 119 students.

You might be interested in

Austin buys $10 worth of food for his dog each week. There are 52 weeks in a year.

ololo11 [35]

Answer:

b i think

Step-by-step explanation:

8 0

3 years ago

There are 36 carpenters in a crew.

dolphi86 [110]

Answer:

<em>75%</em>

Step-by-step explanation:

27 ÷ 36 = 0.75

0.75 → 75%

75% of the crew are men

Hope this helped! :)

7 0

3 years ago

Read 2 more answers

Answer please show steps please

erik [133]

Answer:

25 girls

Step-by-step explanation:

Let

x denote number of boys

and

y denote number of girls

According to the statement that total 45 people came,

x+y = 45 => Eqn 1

And total paid amount was 175

So,

5x + 3y = 175 => Eqn 2

For solving, We will use the substitution method

So, from eqn 1

x = 45-y

Putting value of x in eqn 2

5(45-y) +3y = 175

225 - 5y + 3y = 175

-2y+225 = 175

-2y = 175-225

-2y = -50

2y = 50

y = 25

Putting y =25 in eqn 1

x+25 = 45

x = 45 - 25

x = 20

As y= 25

So, 25 girls came to the dance ..

6 0

3 years ago

A table shows a proportional relationship where k is the constant of proportionality. The rows are then switched. How does the n

andrew-mc [135]

Answer:

Read all of it it’s gonna help alot

Step-by-step explanation:

6 0

3 years ago

An employee at a department store is stocking cell phone cases. He has a box of 80 cases. Among the 80 cases, 40 are black, 10 a

Salsk061 [2.6K]

Answer:

$\sf \dfrac{203}{4108}$

As a decimal = 0.05 (nearest hundredth)

Step-by-step explanation:

$\sf Probability \ of \ an \ event \ occurring = \dfrac{Number \ of \ ways \ it \ can \ occur}{Total \ number \ of \ possible \ outcomes}$

First pick:

$\sf \implies P(pink)=\dfrac{30}{80}$

As the case is NOT replaced, second pick:

$\sf \implies P(pink)=\dfrac{30-1}{80-1}=\dfrac{29}{79}$

As the case is NOT replaced, third pick:

$\sf \implies P(pink)=\dfrac{29-1}{79-1}=\dfrac{28}{78}$

Therefore,

$\sf \implies P(pink \ and \ pink \ and \ pink)=\dfrac{30}{80} \times \dfrac{29}{79} \times \dfrac{28}{78}=\dfrac{203}{4108}$

Answer as a decimal = 0.05 (nearest hundredth)

6 0

2 years ago