1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
scZoUnD [109]
3 years ago
8

Leah surveys every fifth person leaving the public library about whether they support a plan to increase town bus service. She f

inds that most of the people surveyed support the plan. Leah concludes that most residents of the town must support the plan.
Which statement best explains whether Leah's conclusion is correct or incorrect?

A She may not be correct, because her sample is representative of the voters in the town,
B She should be correct, because her sample is representative of the voters in the town,
© She may not be correct, because her sample is not representative of the voters in the town,
D) She should be correct, because her sample is not representative of the voters in the town.​
Mathematics
1 answer:
lozanna [386]3 years ago
4 0

Answer:

ghhjufhbf7hfigtcyghuiojvgukbv

You might be interested in
Are they right??? <br><br> Due tomorrow
DedPeter [7]
Yes they are right you did a great job!
8 0
3 years ago
The given function models the number of cars that are put through a quality control test each hour at a car production factory.
Annette [7]

hours each day.

Step-by-step explanation:

The given function models the number of cars that are put through a quality control test each hour at a car production factory.

The given function is

We need to find the number of hours does the quality control facility operate each day.

Rewrite the given function it factored form.

Taking out the common factors from each parenthesis.

The factored form of given function is c(t)=-(t-10)(t+2).

Equate the function equal to 0 to find the x-intercept.

Number of hours cannot be negative. So from t=0 to t=10 quality control facility operate the cars.

Therefore the quality control facility operates for 10 hours each day.

7 0
3 years ago
Read 2 more answers
Help. Solving Multi Step Ratio Problems!
Romashka-Z-Leto [24]

Answer:

Part 1) 30\ coupons

Part 2) 12\ sandwiches

Part 3) 60\ push-ups

Part 4) 96\ minutes

Part 5) \$95

Part 6) 1\frac{7}{8}\ cups\ of\ pretzel

Step-by-step explanation:

Part 1) we know that

At the Green House of Salad , you get a $1 coupon for every 3 salads you buy

so

Using proportion

Find out the number of salads you could buy to get $10 in coupons

\frac{1}{3}=\frac{10}{x} \\\\x=3(10)\\\\x=30\ coupons

Part 2) we know that

Kim orders catering for $35

She spend $5 on a large order of potato salad and the rest on turkey sandwiches

Each sandwich is $2.50

How many sandwiches does Kim buy?

step 1

Find out how many Kim spent on turkey sandwiches

Subtract $5 from $35

35-5=$30

step 2

Using proportion, find out the number of sandwiches

so

\frac{1}{2.50}=\frac{x}{30}\\\\x=30/2.50\\\\x= 12\ sandwiches

Part 3) we know that

Molly does 10 push-ups at the same time as Liza does  15 push-ups

so

Using proportion

Find out how many push-ups Liza does when Molly does 40 push-ups

\frac{10}{15}=\frac{40}{x}\\\\x=15(40)/10\\\\x=60\ push-ups

Part 4) we know that

A shark swim at a speed of 25 miles per hour

The shark rest after 40 miles

How long in minutes, does the shark swim before resting?

Using proportion

Find out how long in minutes the shark swim 40 miles

Remember that

1\ h=60\ min

\frac{25}{60}\ \frac{miles}{minutes}=\frac{40}{x}\ \frac{miles}{minutes}\\\\x=60(40)/25\\\\x=96\ minutes

Part 5) we know that

For every bar of soap that Aly sells, she earns $5

For every mug that Janet sells, she earns twice as much as Aly

Aly sells 5 bars of soap and Janet sells 7 mugs

How much money did they make altogether?

step 1

Find out the amount earned by Aly

using proportion

\frac{1}{5}=\frac{5}{x}\\\\x=5(5)\\\\x=\$25

step 2

Find out the amount earned by Janet

Remember that

For every mug that Janet sells, she earns twice as much as Aly

so

For every mug that Janet sells, she earns 2($5)=$10

using proportion

\frac{1}{10}=\frac{7}{x}\\\\x=10(7)\\\\x=\$70

step 3

Adds the amount earned by Aly plus the amount earned by Janet

25+70=\$95

Part 6) we know that

Ted is making trail mix for a party

He mixes 1 1/2 cups of nuts, 1/4 cup of rising and 1/4 cup of pretzel

How many cups of pretzel does Ted need to make 15 cups of trail mix?

Adds the quantities

1\frac{1}{2}+\frac{1}{4} +\frac{1}{4}=2\ cups\ of \ trail\ mix

That means

For every 2 cups of trail mix we need 1/4 cup of pretzel

using proportion

Find out how many cups of pretzel does Ted need to make 15 cups of trail mix

\frac{2}{(1/4)}=\frac{15}{x}\\\\x=15(1/4)/2\\\\x=\frac{15}{8}\ cups\ of\ pretzel

Convert to mixed number

\frac{15}{8}=\frac{8}{8}+\frac{7}{8}=1\frac{7}{8}\ cups\ of\ pretzel

6 0
4 years ago
PLEASE HELP ME I HAVE A SICKNESS CALLED IM DUMB AND I REALLY NEED HELP WITH THESE QUETIONS. IF YOU CAN ANSWER THEM ALL ILL GIVE
slava [35]

Step-by-step explanation:

the answer in the image

7 0
3 years ago
Give me an example of a unit rate used in a real world sutuation
mixer [17]
A unit rate simply means how many of one type of units you get per 1 other type of unit. 
Examples of that:
300\frac{l}{ s }

This is rate of fluid flow of some pump for example. It pumps 300 liters every second.

Other example:
50 \frac{km}{h}
This is example for speed. Somebody is moving at 50 kilometers per hour (every hour he travels 50 kilometers)
5 0
3 years ago
Other questions:
  • A triangle has side lengths of 33 inches, 77 inches, and c inches
    12·1 answer
  • What is the answer to 7-4+3×0+1
    10·2 answers
  • WILL MARK BRAINLIEST! PLEASE HELP MEH!Use the relationship between the angles in the figure to answer the question. Which equati
    12·2 answers
  • EXPONNIS AND EXPONENTIAL FUNCTIONS
    8·1 answer
  • Pleeaaassseeeees help,
    12·1 answer
  • An optical inspection system is used to distinguish among different part types. The probability of a correct classification of a
    15·1 answer
  • The area in square feet of a rectangular field is x - 70x + 1200. The width, in feet, is x - 30. What is the length, in feet?
    9·1 answer
  • A carousel with a 40-foot diameter makes 3 revolutions per minute. (a) Find the angular speed of the carousel in radians per min
    11·1 answer
  • Grace has 634 stickers. Huiling has 210 stickers. How many stickers must Grace give Huiling so that both of them have the same n
    13·1 answer
  • If ΔFGH ≅ ΔIJK, which segment is congruent to segment GH?
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!