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3 years ago

Car A travels 105 miles on 3 gallons of petrol.

Mathematics

1 answer:

Aloiza [94]3 years ago

7 0

Answer:

Car B

Step-by-step explanation:

Car A: 105 miles/3 gallons

= 35miles/gallon

1 gallon = 4.5 litres

So 9 litres = 2 gallons

Car B: 80 miles/2 gallons

= 40 miles/gallon

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Together, angles A and B form a 90° angle. Angle A measures 54°. What is the measure of angle B?

goldfiish [28.3K]

Answer:

Step-by-step explanation:

90-54=36

right angles measure 90 therefore angle a and b has to add up to 90

5 0

3 years ago

If 7x - 4y = 23 and x + y = 8, what is the value of x?

Margaret [11]

Answer:

x=5

Step-by-step explanation:

7x - 4y = 23 and x + y = 8

Multiply the second equation by 4

4x + 4y = 32

Add this to the first equation

7x - 4y = 23

4x + 4y = 32

------------------------

11x = 55

Divide each side by 11

11x/11 = 55/11

x = 5

8 0

3 years ago

Read 2 more answers

What is your current debt ratio as a percentage to the nearest hundredth?

olasank [31]

Answer:

Step-by-step explanation: see attachment below

4 0

3 years ago

Please help me !!!!!!!!!!!!!!!!

Nutka1998 [239]

Answer: x=-10, y=13

Step-by-step explanation:

$-3x+2y=56\\-5x-2y=24$

+2y-2y = 0, eliminating y is much easier. So -3x-5x = -8x and 56+24 = 80

$-8x=80\\x=-10$

Substitute x in any equations but only 1 equation (Don't substitute in both equations.)

For me, I'd substitute x in -3x+2y=50

$-3(-10)+2y=56\\30+2y=56\\2y=56-30\\2y=26\\y=13$

So the answer is x = -10, y = 13

5 0

3 years ago

Find the inverse for each relation: 1. {(1,-2), (2, 3),(3, -3),(4, 2)}

andrey2020 [161]

Answer:

the inverse for each relation:

1. {(1,-2), (2, 3),(3, -3),(4, 2)} is

{(-2,1),(3,2),(-3,3),(2,4)}.

3 0

3 years ago