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pishuonlain [190]

3 years ago

15

Harry collected green balls in a bag. He drew two balls, of the five balls, out of the bags. Is this a random sample of the gree

n balls in the bag?

1 answer:

babymother [125]3 years ago

7 0

Answer:

Yes

Step-by-step explanation:

It is a random sample of the green balls in a bag because it never states that he is doing it someone.

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Ana can finish a certain job in 10 hours. Together, Ana and Nina can finish the same job in 3 hours. How many hours can Nina fin

Over [174]

Answer: 4.5 hours

<u>Step-by-step explanation:</u>

$Ana: \dfrac{1}{10}\ \text{job per hour}\\\\Nina: \dfrac{1}{x}\ \text{job per hour}\\\\Together: \dfrac{1}{3}\ \text{job per hour}\\\\\\Ana + Nina = Together\\\dfrac{1}{10}\quad +\dfrac{1}{x}\quad =\quad \dfrac{1}{3}\\\\\\\dfrac{1}{10}(30x)+\dfrac{1}{x}(30x) =\dfrac{1}{3}(30x)\\\\\\\rightarrow\quad 3x+30=10x\\\\.\quad 3x+30=10x\\\underline{-3x\qquad \quad -3x\quad}\\.\qquad \quad 30=7x\\\\.\qquad \quad \dfrac{30}{7}=\dfrac{7x}{7}\\\\\\.\qquad \quad \dfrac{30}{7}=x$

$.\qquad \quad 4.5=x$

5 0

2 years ago

Jan left her home and drove for 5.2 hours due north at a rate of 60 miles per hour. After visiting a friend, she drove due south

Andreyy89

Answer:

180 miles

Step-by-step explanation:

Going North

<em><u>Formula</u></em>

d = r * t

<em><u>Givens</u></em>

r = 60 mph

t = 5.2 hours

d = ?

<em><u>Solution</u></em>

d = 5.2 * 60 = 312 miles north

Going South

<em><u>Givens</u></em>

r = 55 mph

t = 2.4 hours

<em><u>Solution</u></em>

d = r * t

d = 55 * 2.4

d = 132

Distance from home

Formula: Distance from home = Distance North - Distance South

Distance North = 312 - 132 = 180 miles

4 0

3 years ago

Read 2 more answers

Write the number in standard form as a decimal

pishuonlain [190]

Answer:

<h3>4.008</h3><h3 /><h3>10.1</h3>

Step-by-step explanation:

<h2>I hope it will help you</h2><h2>please make me brainlest</h2>

<h2><u>THANK</u><u> U</u></h2>

5 0

3 years ago

A bus traveled 300 miles in 6 hours. How many miles would the bus travel in 1 hour

alexira [117]

Step 1
300/6
Step 2
answer=50

7 0

2 years ago

Read 2 more answers

What’s he answer thanks

gayaneshka [121]

24 miles = 326 gallons

divide each side by 24: 1 mile = 13.583 gallons

round: 13.6 miles per gallon

7 0

3 years ago

Read 2 more answers