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alexandr1967 [171]
4 years ago
15

Perry surveyed 60 students at her school and found that 0.45 of the students she surveyed said their favorite class is math. Ano

ther 35% of the students she surveyed reported that their favorite class is science. How many more students in the survey prefer math over science?
Mathematics
1 answer:
densk [106]4 years ago
3 0
0.45 x 60 = 27
35% x 60 = 21

27-21 = 6 more students prefer math

However, a further 12 students didn't specify whether they prefer maths or science, so you could argue that the answer is 6 +/- 12
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Mr. snorkel drove 169 miles in 3 h 30 min. find the rate in feet per minute
AVprozaik [17]

169 miles * 5280 ft/ mile = 892320 ft

3 hours * 60 minutes/1 hr = 180 minutes

3 hrs 30 minutes = 180 minutes + 30 minutes = 210 minutes


169 miles/ 3 hrs 30 minutes    = 892320 ft/ 210 minutes = 4249.1 ft/ minutes

3 0
4 years ago
Find an equation of a line passing through the point (8,9) and parallel to the line joining the points (2,7) and (1,5).
TiliK225 [7]

Answer:

2x - y - 7 = 0

Step-by-step explanation:

Since the slope of parallel line are same.

So, we can easily use formula,

y - y₁ = m ( x ₋ x₁)

where, (x₁, y₁) = (8, 9)

and m is a slope of line passing through (x₁, y₁).

and since the slope of parallel lines are same, so here we use slope of parallel line for calculation.

and, Slope = m = \dfrac{y_{b}-y_{a}}{x_{b}-x_{a}}

here, (xₐ, yₐ) = (2, 7)

and, (y_{a},y_{b}) = (1, 5 )

⇒ m = \dfrac{5-7}{1-2}

⇒ m = 2

Putting all values above formula. We get,

y - 9 = 2 ( x ₋ 8)

⇒ y - 9 = 2x - 16

⇒ 2x - y - 7 = 0

which is required equation.

3 0
3 years ago
Read 2 more answers
Help me with my review please
Marianna [84]

Answer:

I believe it is AAS but I'm not 100%  so if I'm wrong I would like to apologies ahead of time.

I hope this is good enough:

4 0
3 years ago
Solve using Combining Like Terms (CLT)<br><br> 7 + 4d + 5d = 7d + 3
Vesnalui [34]

Answer:

d= -2

Step-by-step explanation:

7 + 4d + 5d = 7d + 3

Combine like terms

7+9d = 7d+3

Subtract 7d from each side

7+9d-7d = 7d-7d+3

2d +7 = 3

Subtract 7 from each side

2d+7-7 = 3-7

2d = -4

Divide each side by 2

2d/2 = -4/2

d = -2

3 0
3 years ago
3e + 7 - e and 2e + 10 + 2e -3
ch4aika [34]

Answer:

The sum is

6e  + 14

Step-by-step explanation:

Assuming we are finding the sum of :

3e + 7 - e and 2e + 10 + 2e -3

Then we set up the addition as follows:

3e + 7 - e + 2e + 10 + 2e - 3

We group similar try to get:

3e  - e + 2e +  2e - 3 + 7 + 10

We now combine the similar terms to obtain:

6e  + 14

Therefore the sum is

6e  + 14

5 0
3 years ago
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