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marta [7]
4 years ago
9

if you drive at an average speed of 45 mph, you arrive I minutes early. if you drive an at an average speed of 40 mph and arrive

I minutes late. how far is your house from the school.
Mathematics
2 answers:
Tju [1.3M]4 years ago
6 0
Sex with aliens in 1991 with micheal jordan

Karo-lina-s [1.5K]4 years ago
4 0
This means that right in the middle of the 2 speeds is perfect speed (42.5 mph). That also means that you go 2.5 miles per minute.

42.5/2.5 = 85/5 = 17
17 minutes to travel 42.5 mph for x distance.
42.5/60 = 60/17
42.5/1 = 1/17
42.5/17
2.5

Your house is 25 miles away from your school.
You might be interested in
I have another Brainliest reward
Luba_88 [7]
San Antonio to Dallas
65mph with 277 mi
277/ 65 = 4.26 hours
4.26 hours < 4.5 hours
so answer is YES

-----------------
Dallas to San Antonio:  277/4.75 = 58.32 mph
Lubbock to El Paso :    344/4.5 = 76.44 mph
San Antonio to Abilene: 261 / 4.25 = 61.41 mph
Dallas to Abilene: 185 / 3 = 61.67 mph

answer
lowest speed is :
Dallas to San Antonio in 4 3/4 hours


3 0
3 years ago
An artist can sell 20 copies of a painting at $100 each, but for each additional copy he
FinnZ [79.3K]

Answer:

make 10 copies and each will be sold for 200dollars

7 0
3 years ago
The diagram shows three squares that are joined at the vertices to form a right triangle.
garik1379 [7]

Answer:

the first statement ( I )

Step-by-step explanation:

4 0
3 years ago
Write the difference and simplest form (5n-3)-(-2n+7) 100 points
alekssr [168]

Answer:

7n - 10

5n - 3 + 2n - 7

(distribute the negative sign throughout the equation) (then just combine like terms)

7 0
3 years ago
Recently many companies have been experimenting with telecommuting, allowing employees to work at home on their computers. Among
Paha777 [63]

Answer:

A.) Population : All employees at a firm

B.) μ = 5.4

C.) Sample : 80 employees at a firm

D.) Sample mean, x bar = 4.5

Step-by-step explanation:

From the question :

E.)

H0: μ ≥ 5.4

H1 : μ < 5.4

F.)

If Pvalue < α ; Reject H0

G.)

Test statistic :

(xbar - μ) ÷ (s/sqrt(n))

(4.5 - 5.4) ÷ (2.7/sqrt(80))

-0.9 ÷ 0.3018691

= - 2.98

H.)

Pvalue fro Zscore calculator, α = 0.10 = 0.002882

I.)

Decision :

0.002882 < 0.10

Since, Pvalue < α ; We reject the Null

J.)

We Can conclude that the true mean number of sick days for all employees of the firm has decreased after telecommuting was introduced

6 0
3 years ago
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