Mathematics Middle School

A state government study surveyed a representative sample of child-care centers about childhood illnesses. Which statement BEST explains what makes the sample representative?

A
Every child-care center in the state participated in the study.

B
Every child-care center in the state had an equal chance of participating in the study.

C
Every child-care center was asked a series of randomly selected questions.

D
Every child-care center that participated must have reported childhood illnesses to the state.

Answers

Answer 1
B the answer....... chupapi
Answer 2

Answer:

A

Step-by-step explanation:

Related Questions

A worker can load 4 pallets in 30 minutes. At that rate, how many pallets can he load in 4 hours?

Answers

8 pallets each hour so it would be 8 x 4 to find the answer. the answer is 32 pallets

Answer:

32

Step-by-step explanation:

1 hour = 60 minutes

Thus, 30 minutes if half an hour.

The worker can load 4 pallets every 30 minutes.

30*2=60

4*2=8

So the worker can load 8 pallets every 60 minutes, or every hour.

8*4=32

So, a worker can load 32 pallets in 4 hours.

BONUS: The worker can load 1 pallet every 7.5 minute

Brainliest pls

Can someone please help me! No bots will be acceptable!!! This is due today. Pls help!! I just need help with number 2. , the first question. Thanks!

Answers

i dont see anything, what do you need help with?

I don’t see any pictures?

Can someone please please PLEASEEE help me with these two questions!!



(15 points….)

Answers

Answer:

1) = 2hrs and 30mins

2) = 130miles

Step-by-step explanation:

1) 60mi/hr, total driven 150miles

so at 120miles thats 2 hours. 30 miles is 30 minutes

60+60+30=150miles

2) 40miles/hr you drove 2 hours at 40 miles

40+40 =80miles

50miles/hr you drove 1 hour st 50 miles

40+40+50 = 130miles

Answer: 1)  2.5 hours,  2)  130 miles

Step-by-step explanation:

To solve both of these problems, let us remember the formula:

    Distance = (speed) × (time)

1)  Plug in the numbers into the formula:

    150miles = (30miles/hour) × (time)

Divide both sides by 30miles/hour to solve for time:

    150miles/(30miles/hour) = time

Simplify:

    2.5hours = time

2)  Susan's driving is broken into two parts with different speeds and time.

Solve the distance for first drive by plugging numbers into formula:

    Distance = (40miles/hour) × (2hours)

Multiply:

    Distance of first drive = 80miles

Solve for distance of second drive:

    Distance = (50miles/hour) × (1hour)

Multiply:

    Distance of second drive = 50miles

Add distance of first drive and second drive:

    80miles + 50miles = 130miles

Hurry Asap Like Rn Pls I Will Give You Brainliest!

Answers

Answer:

Step-by-step explanation:

Each package holds 24 so you would use the equation n = 24p

which means the number of lightbulbs = 24 times the number of packages

so 1 package = 24

3 packages = 72

10 packages = 240

oh and part B is B

PLSS HELPP DUE IN 10 MINUTES

Answers

The answer is 2502.

Answer:

Step-by-step explanation:

go to quiziz just replace the last part with rocks

(answers for quiziz)

Hurry Asap I Will Give You Brainliest Pls Help!

Answers

Answer:

C.

Step-by-step explanation:

6 to the second power is 36. 6 x 6 is 36. I'm really bad at explaining so I'm sorry if you don't understand.

QUIKKK PLEASE HELP
For lines c, d and e, m1 = 90° and m3=90°



For the given diagram and angle measures, use complete sentences to describe each pair of lines as parallel or perpendicular. In your description, include the special angle relationship between angles 1 and 3.
lines d and e
lines d and c

Answers

The relationship between angles 1 and 3 is that they are congruent, or equal to each other. they have the same measure.

Lines D and E seem to be a pair of lines that are parallel to each other, which is what makes angles 1 and 3 congruent

Lines D and C seem to be perpendicular to each other, which would make angles 1 and 3 right angles.

can u help me...............

Answers

Answer:2.4

Step-by-step explanation:

Answer:

2.4

Step-by-step explanation:

I got this anwer because If 2.36 round up It will be 2.4 because Think of it that To round 2.36 to the nearest tenth consider the hundredths’ value of 2.36, which is 6 and equal or more than 5.

If a triangle has a base of 64 m and a height of 7.3 m then what is the area of the triangle? please show your work!

Answers

area is base x height over 2
64 x 7.3 = 467.2
467.2/2 = 233.6
the area is 233.6m^2

Answer:

233.6m²

Step-by-step explanation:

Area of a triangle formula:

[tex]A = \frac{(h)(b)}{2}[/tex]

Plug in the numbers:

A = 7.3*64/2

A = 233.6m²

Can u explain how to get the answer???

Answers

Answer:

Since there are 8 sections and 3 are even

We consider that 3/8

We now multiply by 120 since they said 120 times it is spun

3/8 x 120 = 45

The answer is 45.

It's hard to explain how I got the answer but I gathered the info below to help me get it.

There are 8 different sections on the wheel. 5 are odd numbers and 3 are even. 5/8 chance of getting an odd number 3/8 chance of getting an even number. The wheel is spun 120 times.

Hope this helps!

what is the value of g ?

Answers

Answer:60.5

Step-by-step explanation:

it would be 60.5 because of the same angle measures as the first angle above it.

The price of a mat is x USD from the start. Write an algebraic expression for the price in the following situations:


a) After it's been reduced by 50%

b) After it's been reduced by 50% twice

c) After first being reduced by 60% and then 40%

Answers

Answer:

a) 1/2x b) 1/4x c) 0.16x

Step-by-step explanation:

Answer:

a) 1/2x b) 1/4x c) 0.16x

Step-by-step explanation:

I will give brainliest to the correct answer!!!

Don't forget...answer both questions

Answers

i think it is this.

1. 2/50

2.  1/10

1. 2/50
2. 1/50 then divided > multiply by 100

A drum of oil is 4 ft. hieight and the radius is 1.2 ft. Oil cost is $22. What is the cost per cubic ft. to fill the drum of oil?
Use 3.14 for pi.
Round answer to nearest penny.

Answers

3.14 • 1.2^2•4
= 18.0864 ft^3

18.0864 • 22
= $397.9
Answer : $1.2 per cubic foot

Explanation :
1. Do your radius to the power of two and multiply by pi (3.14)
2. That would be 4.5216 you then multiply that by 4(your height) and get about 18
3.You divide 22(cost of oil) by 18(drum of oil) and get about $1.2 per cubic foot

Hope this helps

Catherine owns a bakery. She takes x minutes to bake a tray of cookies. The time it takes is less than 18 minutes. Which inequality represents this?

18 > x

x = 18

18 < x

x > 18

Answers

Answer:

18>x

Step-by-step explanation:

Answer:

I don't know but I think it is 18 < x.

Step-by-step explanation:

I hope this answers your question :)

∴∵∴∵ What is the value of the expression 9 − [tex](1/2)^{4}[/tex] ⋅ 48? ∵∴∵∴

Answers

Answer:

The value of the given expression is 6.

Step-by-step explanation:

raise the 1/2 to the 4th power
9 - 1/16 • 48
multiply 1/16 by 48
9 - 3
subtract by 3
6

PEMDAS

can someone help plez

Answers

Answer:

You would use scientific notation for an easier way to simplify a very complex equation, and use standard form whenever you are showing the answer.

Step-by-step explanation:

is the following number rational or irrational?
√121

Answers

Answer:

Rational

Step-by-step explanation:

Because it gives whole number which is 11

Answer:

Rational

Step-by-step explanation:

....................

Answers

Answer:

No, because 2^28 is equal to 2x2 28 times, not 28x2. This means that the answer will be 268435456.  

Step-by-step explanation:

Answer above

If this has helped you please mark as brainliest

Answer:

no, exponents are how many times the base is used, it would be 2×2×2... so on until there are 28 2s

Hilary is ordering a large circular pizza from her local pizza shop. She asks about the size of the pizza and is given three different values: 14 inches, 44 inches and 7 inches.



Hilary knows three measurements that are used to describe circles: radius, diameter and circumference. Which value best matches each measurement? Explain your reasoning.

Answers

Answer:

7 is the radius

14 is the diameter

44 is the circumference

Step-by-step explanation:

7 is the smallest number of them all so it's the radius. The diameter is double of a radius so 14 is the diameter and finally 44 is the circumference :)

7 in is the radius
14 in is the diameter
44 in is the circumference
7 has to be the radius because the radius is half the diameter. this in turn means that the diameter must be 14. and the circumference is 44 because the circumference is the perimeter of the circle. (it has to be the largest number)

Four runners completed in a 10-kilometer relay race. Each Runner ran the same distance. What was that distance?

Answers

Answer:

each runner ran 2.5 kilometers

Step-by-step explanation:

10÷4=2.5

The distance would be 2.5 kilometers if four runners completed a 10-kilometer relay race while covering the same distance each.

What is division?

A method of dividing something into equal parts is called division. It produces a fair distribution of resources and is one of the four basic operations in mathematics.

How to solve this problem?

Total distance = 10 kilometers

Total number of runners = 4

Since they all covered the same distance,

the distance = 10/4 = 2.5 kilometers

Therefore, the distance would be 2.5 kilometers if four runners completed a 10-kilometer relay race while covering the same distance each.

Learn more about division here -

https://brainly.com/question/19162336

#SPJ2

During a debate, Bonnie used 9 minutes to present her opinion, 6 minutes to rebut the opposing opinion, and 5 minutes to summarize.
What percent of the time did she spend summarizing?
A. 5%
B:30%
c. 45%
D. 25%
E. 15%

Answers

Answer:

25%

Step-by-step explanation:

9 + 6 + 5 = 20

she spent 5 minutes summarizing so that is 5/20

5/20 = .25

.25 x 100 = 25%

Answer:

25%

Step-by-step explanation:

REWARDING BRAINLY TO CORRECT ANSWER

Answers

Answer:

x - 16 > 8 (lets solve first before we graph)

+16    +16

X > 24

Since X is greater than 24 we need to show that on the number line.

Pick the circle that is hollow,

Put the hallow circle point on 24,

Then make the arrow go to the right of 24 showing that x is greater than 24.

x- 16 > 8 have nice day :)

ANSWER ALL THE QUESTIONS TO GET MARKED BRAINLYEST

Answers

Answer: 7/10, 7/10 and 3/10.

Step-by-step explanation:

7/10 = Between 1 and 10, the multiples of three are 3, 6, and 9. So the amount favourable outcomes is the total minus the multiples, 10-3 = 7. So 7/10.

7/10 = Between 1 and 10, the multiples of 2 are 2, 4, 6, 8, and 10. The multiples of 3 are 3, 6 and 9. That, gives 7 favourable outcomes (6 is a multiple of both but counted once) giving the probability of 7/10.

3/10 = The favourable outcome is 8 and above, so: 8, 9 and 10. There are 3 favourable outcomes which gives the probability of 3/10.

You have the 1st one correct...
The second one is 8/10...
The 3rd is 3/10

Hope this helps

The table shows a linear relationship between the values of
Which equation represents the relationship in the in the table? ^image

Answers

Answer:

B

Step-by-step explanation:

Trust Me

B tryst trust trust trust

John has a box of nails. The box contains 65 small nails, 40 medium nails, and 45 large nails. Susan has a box of nails that has the same proportion of small, medium, and large nails as John's box. There are 176 medium nails in Susan's box.

What is the total number of nails in Susan's box?

Answers

Answer:

326

Step-by-step explanation:

Add a nails: 65+40+45+176= The answer

660

Step-by-step explanation:

John

65s (small)

40m (medium)

45 L (large)

Susan

x small

176m

y large

From question:

Susan has a box of nails that has the same proportion of small, medium, and large nails as John's box =Meaning same ratio

John ratio. Susan

s : m : L s : m : L

65 : 40 : 45. 13 : 8 : 9

13 : 8 : 9. x : 176 : y

x = (176/8)*13

=286

y = (176/8) * 9

= 198

Total number of nails in Susan box

= x + 176 + y

= 286 + 176 + 198

=660

Please answer all questions

Answers

Tank A that’s all I know

Pleeeeeez help thank you

Answers

I say the answer would be A!!

HELP PLEASE BTW ITS RATIOS!

Answers

35:63:28 please reward me brainiest

plz help !

Question 11 of 14
Drag the operation signs to make the equation true. An operation may be used once. more than once, or not at all

Answers

it’s 12 DIVIDE (7-4)+5 TIMES 3=19
12 divide (7-4) plus 5 x 3= 19
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