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Dmitry [639]
4 years ago
10

A study was being conducted about how much college students spend on the purchase of their textbooks.

Mathematics
1 answer:
Mandarinka [93]4 years ago
5 0

Answer:

n=4

Step-by-step explanation:

because 4x10=40

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PLEASE HELP I WILL MARK BRAINLIEST WORTH 15 POINTS!!!!!!!
Verdich [7]
44 hope i helped and god bless you
7 0
4 years ago
The angles below are supplementary. What is the value of x? (5 points)
Mademuasel [1]

Answer:

Step-by-step explanation:

As the angles are supplementary, they sum up to 180

Hence, 3x+40+80=180

3x+120=180

3x=60

x=20

6 0
4 years ago
Read 2 more answers
Please help, it's for a geometry quiz, show all work please, question in the image attached
aliya0001 [1]

Answer:

m<ABC=94°

m<BCD=25°

m<ACB=43°

Step-by-step explanation:

To find <mBCD

m<ABD=133°, so m<CBD=133° too.

A triangle is equal to 180°.

22°+133°=155°

80°-155°=25°

To find <mACB

You first need to know triangle ACD measurements.

m<ADC=44° (22°+22°)

Then you take the two 25 and add them.

25°+25°=50°

50°+44°=94°

180°-94°=86°

86°÷2=43°

To find m<ABC

43°+43°=86°

180°-86°=94°

4 0
3 years ago
2) As part of traffic accident investigations, the speed of a car involved can be approximately determined by checking actual sk
dezoksy [38]

a) The speed of car was 60 mph.

b) The speed of car was 45 mph.

Step-by-step explanation:

Given,

a = actual skid marks

p = test skid marks

Formula;

s=30*\sqrt{\frac{a}{p}}\\

a) a = 144 feet, p = 36 feet

Putting in formula;

s = 30*\sqrt{\frac{144}{36}}\\\\s=30*\sqrt{4}\\\\s=30*2\\\\s=60

The speed of car was 60 mph.

b) a = 153 feet, p = 68 feet

Putting in formula;

s=30*\sqrt{\frac{153}{68}}\\\\s=30*\sqrt{2.25}\\\\s=30*1.5\\\\s=45

The speed of car was 45 mph.

Keywords: substitution, speed

Learn more about substitution at:

  • brainly.com/question/10940255
  • brainly.com/question/10941043

#LearnwithBrainly

4 0
3 years ago
Sophia wanted to increase the area of her vegetable garden she extended the length from 10 feet to 30 feet how many times larger
OverLord2011 [107]

Answer:

The new area of garden is 3 times of the initial area of the garden.

Step-by-step explanation:

The initial length of the garden is 10 feet.

The shape of the garden must be a rectangle and the area of rectangle is

A=l\times w

The initial area of the garden is

A_0=10\times w

A_0=10w

The new length of the garden is 30 feet. So, the new area of the garden is

A_1=30\times w

A_1=30w

Let area of garden is k times larger than the initial area.

A_1=k\times A_0

30w=k\times 10w

Divide both sides by 10w.

k=3

Therefore new area of garden is 3 times of the initial area of the garden.

8 0
3 years ago
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