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dusya [7]
3 years ago
15

If your car gets 27.6 mi/gal, how many gallons of gasoline would you use if you drove 552.4 miles

Mathematics
2 answers:
nlexa [21]3 years ago
8 0
You would use approx. 20.014 gallons.
valina [46]3 years ago
7 0
The mileage is 27.6 mi/gal
Miles driven = 552.4 mi

Calculate gallons used.
gallons = \frac{552.4 \, mi}{27.6 \, mi/gal} = 20.015 \, gal

Answer: 20.015 gallons  (approximately 20 gallons)

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Which quadratic equation has roots –2 and 1/5?
AysviL [449]

Answer:

The equation 5x^2\:+\:9x\:-\:2\:=\:0 has roots –2 and 1/5.

Hence, the option 'a' is the correct answer.

Step-by-step explanation:

Checking the equation

5x^2\:+\:9x\:-\:2\:=\:0

putting x = -2 in the equation

5\left(-2\right)^2\:+\:9\left(-2\right)-\:2\:=\:0\:

2^2\cdot \:\:5-9\cdot \:\:2-2=0

2^2\cdot \:5-18-2=0

20-20=0

0=0

L.H.S=R.H.S

putting x = 1/5 in the equation

5\left(\frac{1}{5}\right)^2\:+\:9\left(\frac{1}{5}\right)-\:2\:=\:0\:

5\left(\frac{1}{5}\right)^2+9\cdot \:\frac{1}{5}-2=0

\frac{1}{5}+\frac{9}{5}-2=0

2-2=0

0=0

L.H.S=R.H.S

As putting x = -2 and x = 1/5 satisfy the equation.

Therefore, the equation 5x^2\:+\:9x\:-\:2\:=\:0 has roots –2 and 1/5.

Hence, the option 'a' is the correct answer.

4 0
3 years ago
Asha and Lucy are selling pencils in a school shop.
Akimi4 [234]

Step-by-step explanation:

7x+22=2(5x+2)

7x+22=10x+4 (-7x)

3x+4=22 (-4)

3X=18 (divide by 3)

X=6 pencils

check if the number is correct

asha= 7*6=42 42+22 is 64

Lucy= 5*6=30 30+2 is 3264/32 is 2

asha= 7*6=42 42+22 is 64Lucy= 5*6=30 30+2 is 3264/32 is 2there fore asha sells twice as many as Lucy

8 0
3 years ago
A particle P moves in a straight line such that, t s after leaving a point O, its velocity v ms^-1 is given by v=36t - 3t^2 for
Jet001 [13]

Answer:

jajjskslslskjsjxjj k k

6 0
3 years ago
A rectangular prism that has a length of 6 units, width of 4 units, and height of 5 units.
AlladinOne [14]

Answer:

inside

120

Step-by-step explanation:

E D G E N U I T Y

Stay safe and have a wonderful day/afternoon/night!!!!!

Brainliest?!?!

5 0
3 years ago
Read 2 more answers
What is this answer im being timed so plz help
olchik [2.2K]

Answer:

(Kind of cheating but since you're timed I'm just gonna five you the answer:

3/11

Step-by-step explanation:

I got this by guessing a bit, I used what varibles I had and 0.27 & 3 and used them.

So 3/0.27 = 11.11 (Repeating) so then I rounded this to a whole number,

3/11 = 0.27 (Repeating)

6 0
3 years ago
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