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3 years ago

Rachel jogged along a trail that was 1/4 of a mile long. She jogged around it 8 times. How many miles did Rachel jog?

Mathematics

2 answers:

aev [14]3 years ago

4 0

Rachel jogged two miles, 1/4 x 8

bixtya [17]3 years ago

4 0

I'm pretty sure it's 2 because 8x1/4 = 2, I hope this helped

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After sailing 12 mi, a sailor changed direction and increased the boat's speed by 4 mph. an additional 18 mi was sailed at the i

inessss [21]

Let the speed for the first 12 mi be x mi/h, the speed for 18 mi was (x+4) mi/h
thus given that
time=distance/speed
the average time will be:
3=(12+18)/(x+x+4)
3=30/(2x+4)
solving for x we get
3(2x+4)=30
6x+6=30
6x=24
x=4 mi/hr
Answer: 12 mi/hr

8 0

2 years ago

Shorty’s Muffler advertises it can install a new muffler in 30 minutes or less. However, the work standards department at corpor

pav-90 [236]

Answer:

The installations at the Maumee branch would you expect to take more than 30 minutes is 10.

Step-by-step explanation:

Consider the provided information.

Let x is the installations at the Maumee branch take more than 30 minutes.

The work standards department at corporate headquarters recently conducted a study and found that 20% of the mufflers were not installed in 30 minutes or less.

Therefore, π=0.20

The Maumee branch installed 50 mufflers last month.

Thus, n=50

Mean of the distribution: μ=nπ

Substitute the respective values in the above formula.

μ=(50)(0.20)

μ=10

Hence, the installations at the Maumee branch would you expect to take more than 30 minutes is 10.

7 0

3 years ago

Help pls ill mark brainliest

Naily [24]

Answer:

A. 2,310 sq ft

Step-by-step explanation:

Rectengle below:

A = l × b
A = 74 × 15
A = 1,110ft

Rectangle Above:

A = l × b
A = 50 × 24
A = 1,200ft

Area of the Playground:

1,110ft + 1,200ft
1,310 sq ft (A)

3 0

2 years ago

I need to know how to solve this problem because I’m very confused and it doesn’t explain what it is or how to do it in my textb

Lostsunrise [7]

Answer:

x1 = -4; x2 = 10

Step-by-step explanation:

1) Expand the module as two separate equations:

x - 3 = 7

x - 3 = -7

2) Solve the equations:

x = 10

x = -4

=> x1 = -4; x2 = 10

5 0

3 years ago

Quadratic 6X2 + 5X = -7

poizon [28]

Ok, so here your being asked to solve 6x2 + 5x = -7

The procedure that I did was using this formula it led me to get the following:
Using the formula:

x = -(-5) ± √(-5)² - 4(6)(-6)/ 2(6)
x = 5 ± √ 25 + 144 / 12
x = 5 ± √ 169 / 12
x = 5 ± 13/12

x1 = 5 + 13/12
x1 = 18/12
x1 = 3/2

x2 = 5 - 13/12
x2 = -8/12
 x2 = - 2/3

Hope this helped :)

7 0

3 years ago