Evaluate.

The diameter of a circle is 24 centimeters. what is the circles area? use 3.14 for pi

Firlakuza [10]

Answer:

452.16

Step-by-step explanation:

di is twice the radius and to get area you need radius so 24/2=12

now insert 12 into the formula 12^2*3.14 now use pemdas

12^2=144

144*3.14

452.16

6 0

2 years ago

You are buying a $50 video game as a holiday gift for your brother luckily you have not just one but two coupons for that store

postnew [5]

Whats the question though?

6 0

4 years ago

Each pitcher of podwer smoothie that Ginger makes has 2 scoops of pineapple,3 scoops of strawberries,1 scoop of spinach and 1 sc

WITCHER [35]

Answer:

She will use 49 scoops

Step-by-step explanation:

* Lets explain how to solve the problem

- Each pitcher of powder smoothie that Ginger makes has:

# 2 scoops of pineapple ⇒ 2 p

# 3 scoops of strawberries ⇒ 3 s

# 1 scoop of spinach ⇒ 1 sp

# 1 scoop of kale ⇒ 1 k

- She makes 7 pitchers of powder smoothies

* Lets write an expression for the number of scoops of one pitchers

powder smoothie

∵ 1 pitcher of powder smoothie contains 2 p scoops, 3 s scoops,

1 sp scoop and 1 k scoop

∴ The number of the scoops = 2 + 3 + 1 + 1 for one pitcher

∵ She makes 7 pitchers of powder smoothie

- Multiply the scoops of each type by 7

∴ The total number of scoops = (7 × 2) + (7 × 3) + (7 × 1) + (7 × 1)

- By multiply the numbers in the parentheses

∴ The number of total scoops = 14 + 21 + 7 + 7

∴ The number of total scoops = 49

* She will use 49 scoops

6 0

4 years ago

Mr. Bond’s class wanted to estimate the mean mass of Snickers Fun Size bars. They randomly selected 74 bars and recorded the mas

AleksAgata [21]

Step 1: Find the standard error (SE)

The standard error is given by

$SE=\frac{s}{\sqrt[]{n}}$ $\begin{gathered} \text{ Where } \\ SE=\text{ the standard error} \\ s=\text{ the sample standard deviation} \\ n=\text{ the sample size} \end{gathered}$

In this case,

$n=74,s=0.76$

Therefore,

$SE=\frac{0.76}{\sqrt[]{74}}\approx0.0883$

Step 2: Find the alpha level (α)

$\alpha=1-\frac{(\text{Confidence level})}{100}$ $\alpha=1-0.99=0.01$

Step 3: Find the critical probability (P*)

$P^{\prime}=1-\frac{\alpha}{2}$

Therefore,

$P^{\cdot}=1-\frac{0.01}{2}=0.995$

Step 4: Find the critical value (CV)

The critical value the z-score having a cumulative probability equal to the critical probability (P*).

Using the cumulative z-score table we will find the z-score with value of 0.995

Hence,

$CV=2.576$

Step 5: Find the margin of error (ME)

$ME=SE\times CV$

Therefore,

$ME=0.0883\times2.576=0.2275$

Step 6: Find the confidence interval (CI)

$\begin{gathered} CI\text{ is given by} \\ CI=(\bar{x}-ME,\bar{x}+ME) \\ \text{ In this case} \\ \bar{x}=17.1 \end{gathered}$

Therefore,

$CI=(17.1-0.2275,17.1+0.2275)=(16.8725,17.3275)$

Hence there is a 99% probability that the true mean will lie in the confidence interval

(16.8725, 17.3275)

4 0

1 year ago

PLEASE HELP ITS DUE TOMORROW <br> I DONT UNDERSTAND!!!!!

Rainbow [258]

Yes, the height, h(t) of a ball t seconds after it's dropped from the third floor of a building is a function.

No, table B is not a function because no function can have the same y-values (5) for different x-values (1 and 8).

Yes, table C is a function because it has different y-values for same x-values.

Yes, graph D is a function because it has different y-values for same x-values.

<h3>What is a function?</h3>

A function can be defined as a mathematical expression which is used to define and represent the relationship that exists between two or more variables.

<h3>The types of function.</h3>

In Mathematics, there are different types of functions and these include the following;

Periodic function

Inverse function

Modulus function

Signum function

Piece-wise defined function.

Logarithm function

For this exercise, we would indicate whether or not each of the above mathematical relation represents a function:

Yes, the height, h(t) of a ball t seconds after it's dropped from the third floor of a building is a function.

No, table B is not a function because no function can have the same y-values (5) for different x-values (1 and 8).

Yes, table C is a function because it has different y-values for same x-values.

Yes, graph D is a function because it has different y-values for same x-values.

In conclusion, we can infer and logically deduce that a function maps every x-value in a valid domain to a single y-value only.

Read more on domain here: brainly.com/question/17003159

#SPJ1

8 0

2 years ago