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marissa [1.9K]
3 years ago
7

Please help me. I need help ASAP. ​

Mathematics
1 answer:
lara [203]3 years ago
5 0

Answer:

a) 72

b) $259.2

Step-by-step explanation:

A- The bus travels 40 miles on 8 gallons of gasoline. The bus is traveling 360 miles in total.

360/40= 9

9*8= 72

B- $3.60 per gallon and 72 gallons in total.

3.60*72=259.2

$259.2

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What is the percent of decrease from 25 to 15? Round your answer to the nearest tenth.
Dahasolnce [82]

Answer: 60%

Step-by-step explanation:

25=100%

50%=12.5

10%=2.5

12.5(50%) +2.5(10%)= 50%(15)

so the answer is 60%

7 0
2 years ago
2x^2+9x=-7 <br> Solve round to nearest tenth
Drupady [299]

Answer:

  x = -3.5 or -1

Step-by-step explanation:

Add 7 and factor.

  2x^2 +9x +7 = 0

  (2x +7)(x +1) = 0

  x = -3.5   or   x = -1 . . . . . values that make the factors zero

_____

<em>Comment on factoring</em>

Factoring ax^2 +bx +c = 0 requires you find factors of ac that have a sum of b. Here, you're looking for factors of 2·7 = 14 that have a sum of 9. If you're observant, you realize that 2+7=9, so 2 and 7 are the factors you want.

Now, you can write the factored form as ...

  (ax +p)(ax +q)/a = 0 . . . . where p and q are the factors of ac we just found

The divisor "a" is used to simplify one or both of the factors. Here, we have ...

  (2x +2)(2x +7)/2 = 0

  (x +1)(2x +7) = 0 . . . . . . we removed a factor of 2 from the first binomial

4 0
3 years ago
Find the Area of the shaded region of the trapezoid below. (show your work or explain how you got your answer in words) *
Rudiy27
This is the full answer to the question

5 0
3 years ago
A theater company charges $5.50 per ticket for people of all age groups. If c represents the total number of children who brough
kipiarov [429]

Answer:

5.50c+5.50a

Step-by-step explanation:

Cost of 1 ticket = $5.50

Total number of children who brought tickets = c

Total number of adults who bought tickets = a

Amount earned from selling tickets to children = 5.50 c

Amount earned from selling tickets to adults = 5.50 a

Therefore,

Total money earned by the company from the sale of tickets = 5.50c+5.50a

3 0
3 years ago
4. T-Bone's Math teacher requires 6 book
Zina [86]

Answer:

2

Step-by-step explanation:

6-4=2

6 0
3 years ago
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