3 years ago

URGENT PLEASE HELP ME

Mathematics

1 answer:

Salsk061 [2.6K]3 years ago

7 0

Answer:

(5,11)

Step-by-step explanation:

Make a picture a map it out.

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$8.75 is your answer.

Step-by-step explanation:

What you do is you multiply 1.25 by 7.

$8.75 is your answer.

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A tomato plant grows 24 inches tall in 10 weeks. If the rate remains the same, how tall would the plant be after 7 weeks?

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A rectangular field with perimeter of 80m is to have an area of at least 380m² . Describe the possible lengths and of the field.

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$let \: x \: be \: the \: length \\ let \: y \: be \: the \: width$

$perimeter = 2x + 2y \\ area = xy$

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2 years ago

The American Water Works Association reports that the per capita water use in a single-family home is 74 gallons per day. Legacy

Lunna [17]

Answer:

Reject H0 since test statistic <-2.492

Step-by-step explanation:

Given that the American Water Works Association reports that the per capita water use in a single-family home is 74 gallons per day.

n = 25

x bar = 69

s= 8.3

std error = s/sqrt n = $\frac{8.3}{5} \\=1.66$

H0: $\bar x = 74$

Ha: $\bar x$

(Left tailed test at 5% significance level)

a) Reject H0 if t $\leq$ -2.492

b) Test statistic = mean difference/std error

= $\frac{69-74}{1.66} \\=-3.012\\$

=-3.01

df =24

c) Reject H0

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3 years ago