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3 years ago

The product of 8 and a number, decreased by 22 is 186. What is the number?

Mathematics

2 answers:

ZanzabumX [31]3 years ago

4 0

Answer:

Step-by-step explanation:

Let's make an equation for this:

(8 * x) - 22 = 186

Let's simplify this a little bit by reversing it:

186 + 22 = 8 * x

186 + 22 = 208

208 = 8 * x

Let's reverse it again:

x * 8 = 208

208 / 8 = 26

x = 26

So, the number is 26

RSB [31]3 years ago

3 0

Answer:

The "number" is 26

Step-by-step explanation:

if x is the number...

8x - 22 = 186

8x - 22 + 22 = 186 + 22

8x = 208

x = 26

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Mancini's Pizzeria sells four types of pizza crust. Last week, the owner tracked the number sold of each type, and this is what

Anvisha [2.4K]

Question:

Mancini's Pizzeria sells four types of pizza crust. Last week, the owner tracked the number sold of each type, and this is what he found.

Type of Crust Number Sold

Thin crust 312

Thick crust 245

Stuffed crust 179

Pan style 304

Based on this information, of the next 4500 pizzas he sells, how many should he expect to be thick crust? Round your answer to the nearest whole number. Do not round any intermediate calculations.

Answer:

1060 thick crusts

Step-by-step explanation:

Given

The above table

Required

Expected number of thick crust for the next 4500

For last week data, calculate the proportion of thick crust sold

$\hat p = \frac{Thick\ crust}{Total}$

$\hat p = \frac{245}{312+245+179+304}$

$\hat p = \frac{245}{1040}$

$\hat p = 0.235577$

For the next 4500;

$n = 4500$

The expected number of thick crust is (E(x)):

$E(x) = \hat p * n$

$E(x) = 0.235577 * 4500$

$E(x) = 1060.0965$

$E(x) \approx 1060$

3 0

3 years ago

A bakery sells a pack of peanut butter cookies for $3 and a

Westkost [7]

F(x,y) =3x + 5y (hope this helps )

5 0

3 years ago

Write the equation of the line that passes through the points (-7,7) and (-6,-5)

Crank

Answer:

y= -12x - 77

Step-by-step explanation:

HOPE THIS HELPS

4 0

2 years ago

A theory predicts that the mean age of stars within a particular type of star cluster is 3.3 billion years, with a standard devi

Luden [163]

Answer:

Null hypothesis: $\mu \leq 3.3$

Alternative hypothesis: $\mu > 3.3$

$z=\frac{3.4-3.3}{\frac{0.4}{\sqrt{50}}}=1.768$

Since is a one right tailed test the p value would be:

$p_v =P(z>1.768)=0.039$

Step-by-step explanation:

Data given and notation

$\bar X=3.4$ represent the sample mean

$\sigma=0.4$ represent the population deviation for the sample

$n=50$ sample size

$\mu_o =3.3$ represent the value that we want to test

$\alpha$ represent the significance level for the hypothesis test.

t would represent the statistic (variable of interest)

$p_v$ represent the p value for the test (variable of interest)

State the null and alternative hypotheses to be tested

We need to conduct a hypothesis in order to determine if the mean is higher than 3.3, the system of hypothesis would be:

Null hypothesis: $\mu \leq 3.3$

Alternative hypothesis: $\mu > 3.3$

Compute the test statistic

We know the population deviation, so for this case is better apply a z test to compare the actual mean to the reference value, and the statistic is given by:

$z=\frac{\bar X-\mu_o}{\frac{\sigma}{\sqrt{n}}}$ (1)

z-test: "Is used to compare group means. Is one of the most common tests and is used to determine if the mean is (higher, less or not equal) to an specified value".

We can replace in formula (1) the info given like this:

$z=\frac{3.4-3.3}{\frac{0.4}{\sqrt{50}}}=1.768$

P value

Since is a one right tailed test the p value would be:

$p_v =P(z>1.768)=0.039$

6 0

3 years ago

Hey guys!!!1! I just joined this class and I’m super-duper excited!!!! Comment your favorite color!!!!!

motikmotik

Answer:

hunter green

Step-by-step explanation:

what about you ??

have a super day

-tay

6 0

3 years ago

Read 2 more answers