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2 years ago

HELPP PLEASE ILL MAKE YOU THE BRAINIEST Find the area of the rhombus

Mathematics

1 answer:

iogann1982 [59]2 years ago

5 0

Answer:

D1×D2/2sq

445×5= 225

225/2

=112.5

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Fifteen SmartCars were randomly selected and the highway mileage of each was noted The analysis yielded a mean of 47 miles per g

laiz [17]

Answer: a. 47 plusminus (1.753*(5 ÷ 3.8730)

Step-by-step explanation:

Confidence interval is written in the form,

(Sample mean - margin of error, sample mean + margin of error)

The sample mean, x is the point estimate for the population mean.

Margin of error = z × s/√n

Where

s = sample standard deviation = 5

n = number of samples = 15

z represents the test statistic

From the information given, the population standard deviation is unknown and the sample size is small, hence, we would use the t distribution to find the test statistic score

In order to use the t distribution, we would determine the degree of freedom, df for the sample.

df = n - 1 = 15 - 1 = 14

Since confidence level = 90% = 0.90, α = 1 - CL = 1 – 0.90 = 0.1

α/2 = 0.1/2 = 0.05

the area to the right of z0.05 is 0.05 and the area to the left of z0.05 is 1 - 0.05 = 0.95

Looking at the t distribution table,

z = 1.753

Margin of error = 1.753(5 ÷ 3.8730)

Confidence interval = 47 ± 1.753(5 ÷ 3.8730)

8 0

3 years ago

What is the inverses of f(x)=4/3x+5

iren [92.7K]

Answer:

f-1(x)=3x/4 -15/4

That is the inverse

3 0

3 years ago

How do u decompose 4/5

PilotLPTM [1.2K]

You mean simplify?

You can't simplify it anymore because the numerator is an even number and the denominator odd..

But,

$\frac{4}{5}$ = 0.8

And equivalent fraction:

Multiply 2 from the numerator and denominator

$\frac{4~multiply~by~2}{5~multiply~by~2} = \frac{8}{10}$

5 0

3 years ago

Read 2 more answers

4gal 2qt - 3gal 3qt=<br> I need help with this one, it's just subtracting as is. Thank you

Oduvanchick [21]

Answer:

= .75 gallons or 3 quarts

Step-by-step explanation:

Known

1 gallon = 4 quarts

Problem:

4 gallons 2 quarts - 3 gallons 3 quarts

⇒ 2 quarts: 0.5 gallons

⇒ 3 quarts: 0.75 gallons

Add on both sides

4 + 0.5 = 4.5 gallons

3 + 0.75 = 3.75 gallons

This leaves the equation at:

4.5 gallons - 3.75 gallons

This equals 3 quarts or 0.75 gallons.

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2 years ago

Select either relation (if the set is a relation but not a function), function (if the set is both a relation and a function), o

inysia [295]

F= {(x,y) I x+y =10

Function

6 0

3 years ago

Read 2 more answers