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Nastasia [14]
3 years ago
6

you plan to take a 1133​-mile trip in your​ car, which averages 22 miles per gallon. How many gallons of gasoline should you exp

ect to​ use? Would a car that has only half the gas mileage require twice as much gasoline for the same​ trip? Explain
Mathematics
1 answer:
kykrilka [37]3 years ago
3 0

Answer:

the answer would be 51.5 gallons in witch you need to travel this amount of miles and yes if you were to drive a car that has less fuel millage would NEED more  

Step-by-step explanation:


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X+(-3)=-7 Solve the equation and enter the value of x below
Phoenix [80]

Answer:

x=-4

Step-by-step explanation:

x+(-3)=-7

x-3=-7

x=-7+3=3-7

x=-4

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Answer:

643

Step-by-step explanation:

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What value of b will cause the system to have an infinite
m_a_m_a [10]

Answer:

b=6

Step-by-step explanation:

<u><em>The correct question is</em></u>

What value of b will cause the system to have an infinite number of solutions?

y = 6x – b

–3x + 1/2y = –3

we have

y=6x-b ----->equation A

-3x+\frac{1}{2}y=-3 -----> equation B

we know that

If the system has infinite number of solutions then, the equation A must be equal to the equation B

so

isolate variable y in the equation B

-3x+\frac{1}{2}y=-3

Multiply by 2 both sides

-6x+y=-6

y=6x-6 -------> new equation B

To find out the value of b, equate equation A and equation B

6x-b=6x-6

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4 0
3 years ago
Out of 18 people in a room, 2 have red hair. What is the probability that a person picked at random from the room does NOT have
Mariana [72]

Answer :

  • Total number of people in the room = 18

  • Number of people with red hair = 2

  • Number of people not with red hair = 18 - 2 = 16

  • Probability of picking a person who doesn't have red hair = \sf\dfrac{Number\:of\:favourable\:outcomes}{Total\:outcomes}

Probability = 16/18

Reduce the fraction with 2

Probability = 8/9

5 0
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12.Divide. (x^2+2x+1/x^2-8x+16)/(x+1/x^2-16
lina2011 [118]
For this case we have the following expression:
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 Rewriting we have:
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 Then, we cancel similar terms:
 ((x + 1) / (x-4)) / (1 / (x + 4))
 Rewriting:
 ((x + 1) (x + 4)) / (x-4)
 Answer:
 
((x + 1) (x + 4)) / (x-4)
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