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2 years ago

I need help with these questions

Mathematics

1 answer:

Lunna [17]2 years ago

5 0

Answer:

5 , 6, 2

Step-by-step explanation:

cause they da same

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Mr. Bryon bought a gas can with 4 1/4 gallons of gasoline in it. He used 1/4 of the amount in the can to mow his lawn. How many

alisha [4.7K]

Do 4 1/4 - 1/4 which is easy, just take away the 1/4 and you get 4, so he used 1/4 gallons

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3 years ago

Read 2 more answers

32 is 16% of what number

Alecsey [184]

The answer is 200. 1% is equal to 2, so 100% is equal to 200.

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3 years ago

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There are a total of 30 white and black marbles in a box. There are 14 more white marbles than black marbles. How many black mar

disa [49]

Answer:

Step-by-step explanation:

30-14=16

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2 years ago

Graph f(x)=3x+5 and g(x)=3x-2

IgorLugansk [536]

Answer:

Two parallel lines

Step-by-step explanation:

the slopes are the same: slope = 3

f(x) 3x + 5 g(x) = 3x - 2

Pick at least three x values and find their corresponding values for y. Remember the f(x) and g(x) represent y

f(x) = 3x + 5 g(x) = 3x - 2

y = 3x + 5 y = 3x - 2

let x = 0 y = 3(0) + 5 y = 3(0) - 2

y = 5 y = -2

Ordered pair (0, 5) (0, -2)

Let x = 1 y = 3(1) +5 y = 3(1) - 2

y = 8 y = 1

ordered pair (1, 8) (1, 1)

Let x = -1 y = 3(-1) + 5 y = 3(-1) - 2

y = 2 y = -5

ordered pair (-1, 2) ( -1, -5)

Locate the ordered pairs and draw the graph on the lines.

you will graph two parallel lines

4 0

2 years ago

A random sample of 77 fields of durum wheat has a mean yield of 27.427.4 bushels per acre and standard deviation of 5.755.75 bus

xz_007 [3.2K]

Answer:

[ 21.79, 33.0 ]

Step-by-step explanation:

Given:

Sample size, n = 7

Sample mean, μ = 27.4

Standard deviation, σ = 5.75

Confidence level is 99%

also, population is normal i.e normally distributed

Thus,

Confidence interval = μ ± $z\frac{\sigma}{\sqrt n}$

For confidence level of 99%

z-value = 2.58

Therefore,

Lower limit of Confidence interval = μ - $2.58\times\frac{5.75}{\sqrt{7}}$

Lower limit of Confidence interval = 27.4 - $2.58\times\frac{5.75}{\sqrt{7}}$

Lower limit of Confidence interval = 21.79

Upper limit of Confidence interval = μ + $2.58\times\frac{5.75}{\sqrt{7}}$

Upper limit of Confidence interval = 27.4 + $2.58\times\frac{5.75}{\sqrt{7}}$

Upper limit of Confidence interval = 33.00

Hence, confidence interval = [ 21.79, 33.0 ]

5 0

3 years ago