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3 years ago

4-inch by 6-inch what is the width of 15 inches for a ratio table

Mathematics

1 answer:

quester [9]3 years ago

3 0

This is a ratio problem; the ratio of the length to width is constant (and therefore equal):

4 /6 = 15 / x

Now, with a ratio, we may do any allowable algebra operation: cross-multiply, invert both sides, multiply or divide both sides by the same amount, etc.

Let's cross-multiply:

4x = (15)(6)

x = 90/4

x = 22.5 in.

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A local eat-in pizza restaurant wants to investigate the possibility of starting to deliver pizzas. The owner of the store has

Mamont248 [21]

Answer:

Step-by-step explanation:

The owner of the store has determined that home delivery will be successful if the average time spent on the deliveries does not exceed 34 minutes. This is the null hypothesis. It is written as

H0 : µ ≤ 34

The alternative hypothesis would be

Ha : µ > 34

This is a right tailed test because of the greater then symbol in the alternative hypothesis. Since the p value for the test was found to be 0.0281281, if we use a significant level of 0.05, then the conclusion would be

Reject the null hypothesis. Therefore, At a 5% level of significance, the sample data showed significant evidence that the average time spent on the deliveries does exceed 34 minutes.

4 0

3 years ago

What is the x value when F(x)=12?

SashulF [63]

Answer:

Step-by-step explanation:

need more information in order to answer this.

4 0

3 years ago

Plzzz hurry up and help me if A+B=45<br>prove that <br>(1+tanA)(1+tanB)=2

Solnce55 [7]

Answer:

see explanation

Step-by-step explanation:

If A +B = 45° then tan(A+B) = tan45° = 1

Expanding (1 + tanA)(1 + tanB)

= 1 + tanA + tanB + tanAtanB → (1)

Using the Addition formula for tan(A + B)

tan(A+B) = $\frac{tanA+tanB}{1-tanAtanB}$ = 1 ← from above

Hence

tanA + tanB = 1 - tanAtanB ( add tanAtanB to both sides )

tanA + tanB + tanAtanB = 1 ( add 1 to both sides )

1 + tanA + tanB + tanAtanB = 2

Then from (1)

(1 + tanA)(1 + tanB) = 2 ⇒ proven

7 0

3 years ago

HELP ASAP PLS

skelet666 [1.2K]

A) exponential is the right answer.

Step-by-step explanation:

The formula used for increase after same number of time is:

$A_t = A_0(1+r)^t\\Here\\A_0\ is\ the\ initial amount\\r\ is\ the\ rate\\and\\t\ is\ time$

We are given

A_0 = 35000

r = 3%

$A_t = 35000(1+0.03)^t\\A_t = 35000(1.03)^t$

The function is an exponential function is the value of t can be put equal to 1,2,3,4..... which will increase the final output exponentially

Hence,

A) exponential is the right answer.

Keywords: Functions, Exponential function

Learn more about functions at:

#LearnwithBrainly

3 0

3 years ago

Find the value of r r/10=18/30

storchak [24]

R/10 = 18/30
30r = 180
r = 6
The value of r is 6

3 0

3 years ago