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3 years ago

Emily can ride her scooter 18 miles in 50 minutes ) How long would it take for her to ride four miles.

Mathematics

2 answers:

Gennadij [26K]3 years ago

4 0

Answer:

0.36

miles per minute

ithink

mestny [16]3 years ago

3 0

Answer:

about eleven minutes

Step-by-step explanation:

18 9

__ = ___

50 25

__ = ___

25 ?

9x = 4(25)

9x = 100

__ _____

9 9

x = 11.1...≈ 11

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Three different methods for assembling a product were proposed by an industrial engineer. To investigate the number of units ass

FrozenT [24]

Answer:

H0 is rejected.There difference in the means for the three assembly methods.

Step-by-step explanation:

Calculating gives the following results.

ANOVA Table

Source DF Sum Mean F Statistic

of Square Square

Treatments 2 4560 2280 9.865

(between groups)

<u>Error 27 6240 231.111 </u>

Total 29 10,800

Error SS= SST -SSTR = -10,800-4560=6240

d.f for SSTr = r-1= 3-1

D.f for SST= n-r= 30-3= 27

Total D.f= d.f for SSTr+D.f for SST= 27+29

MSTR= SSTR/d.f= 4560/2= 2280

MSError= Error SS/ d.f= 6240/27=231.111

F test= MSTR/ MsError= 2280/231.11= 9.865

The P- value < 0.01 which is less than 0.05 therefore H0 is rejected.

There is sufficient evidence to reject H0.

3 0

3 years ago

Simplify: −2s − 9 + 7 − 5r use s = 3 and r =

egoroff_w [7]

Answer:

-2s - 9 + 7 - 5r

Step-by-step explanation:

Add -9 and -7.

-2s - 2 - 5r

Move -2.

-2s - 5r - 2

Reorder -2s and -5r.

-5r - 2s - 2

I hope this helps.

if you could, feel free to mark me Brainliest it would be much appreciated :D

8 0

3 years ago

I don't know if it's the right answer

Komok [63]

They are the same value

4 0

3 years ago

a ruby throated hummingbird is about 4 in long and is it noted for its annual non-stop migration of 500 miles across the Gulf of

Goshia [24]

Answer:

7,920,000

Step-by-step explanation:

The question is asking the number of times that 4 inches fits in 500 miles. We need to divide 500 miles by 4 inches, but first we need to convert 500 miles into inches.

12 inches = 1 foot

5280 ft = 1 mile

500 miles * (5280 ft)/(1 mile) * (12 in.)/(1 ft) = 31,680,000 inches

Now that we know that 500 miles is the same as 31,680,000 inches, we divide that number of inches by 4 inches.

(31,680,000 inches)/(4 inches) = 7,920,000

Answer: 7,920,000

5 0

3 years ago

The 225 students who passed all of their classes on the last report card will attend a one-hour Friday Fun-Day sponsored by the

zhenek [66]

Answer:

C. is incorrect.

Step-by-step explanation:

Calculate the percentages for each prize desired by the 50 students responding in the sample survey. See the attached image for this calculation. Multiply these percentages times the total student body of 225 students to determine the likely selection for each prize (on the attachment).

A. is correct (126 students)

B. is correct

C. is incorrect. The total is (54 + 27) = 83

D. is true

8 0

2 years ago