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Elden [556K]
3 years ago
6

I don’t understand some of this and need help with it

Mathematics
2 answers:
WINSTONCH [101]3 years ago
6 0

Answer:

What is it that you need help with.

Step-by-step explanation:

Anton [14]3 years ago
3 0

Answer:

what is it you need help with help with what

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A gas tank on a car holds 16 gallons of gasoline and can travel 480 miles on a full tank. How many miles can the car travel usin
tamaranim1 [39]

16 gal... 480 mi
1 gal... 480/16 = 30 mi
9 gal.. 30*9 = 270 mi

4 0
2 years ago
Read 2 more answers
During a test period, an experimental group of 10 vehicles using an 85 percent ethanol-gasoline mixture showed mean CO2 emission
Zinaida [17]

Answer:

-1.683

Step-by-step explanation:

Given :

Group 1 :

x1 = 667 ; n1 = 10 ; s1 = 20

Group 2 :

x2 = 679 ; n2 = 14 ; s2 = 15

The test statistic assuming equal variance :

x1 - x2 / √[Sp² * (1/n1 + 1/n2)]

sp² = [(n1 - 1)*s1² + (n2 - 1)*s2²] ÷ (n1 + n2 - 2)

Sp² = [(10 - 1)*20² + (14 - 1)*15²] = 296.59

Test statistic =

(667 - 679)/ √[296.59 * (1/10 + 1/14)]

-12 / 7.1304978

Test statistic = - 1.682

8 0
2 years ago
The table shows a cricket club's income in 2016 from a fete, a quiz and membership fees.
kirill [66]

Answer: 5:2:10

Income from fete = £250

13 x 5 + 35 = 100

25 x 20 = 500

250:100:500

Then simplify ratio -

25:10:50

5:2:10

8 0
2 years ago
Solve the following proportion for x.<br> x8 = 717<br> Round your answer to the nearest tenth.
My name is Ann [436]
You would divide 717 by 8 which would result in x equaling 89.7
8 0
3 years ago
Read 2 more answers
320% expressed as a mixed number in simplest form
andrew11 [14]

Answer:

3 20/100

Step-by-step explanation:

8 0
3 years ago
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