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3 years ago

Pls help!!!!!!!;( i’ll give brainliest

Mathematics

2 answers:

olya-2409 [2.1K]3 years ago

6 0

Answer:

Step-by-step explanation:

The blank is 9. You are just multiplying 3 times 3 which gives 9 because 3 squared is just multiplying it with itsself.

Hope this helped! :)

Alex17521 [72]3 years ago

3 0

I think it is 9 honestly

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Question 1................

rewona [7]

I think it is 9 that it ok

5 0

3 years ago

An Article a Florida newspaper reported on the topics that teenagers most want to discuss with their parents. The findings, the

Sergio039 [100]

Answer:

The estimate is $P__{hat}} \pm E = 0.37 \pm 0.0348$

Step-by-step explanation:

From the question we are told that

The sample size is n = 522

The sample proportion of students would like to talk about school is $\r p__{hat}} = 0.37$

Given that the confidence level is 90 % then the level of significance can be mathematically evaluated as

$\alpha = 100 - 90$

$\alpha = 10\%$

$\alpha = 0.10$

Next we obtain the critical value of $\frac{\alpha }{2}$ from the normal distribution table, the value is

$Z_{\frac{\alpha }{2} } =Z_{\frac{0.10}{2} } = 1.645$

Generally the margin of error can be mathematically represented as

$E = Z_{\frac{\alpha }{2} } * \sqrt{\frac{\r P_{hat}(1- \r P_{hat} )}{n } }$

=> $E = 1.645 * \sqrt{\frac{0.37 (1- 0.37 )}{522 } }$

=> $E = 0.0348$

Generally the estimate the proportion of all teenagers who want more family discussions about school at 90% confidence level is

$P__{hat}} \pm E$

substituting values

$0.37 \pm 0.0348$

5 0

3 years ago

Carey baked 10 cookies with 2 scoops of flour. With 3 scoops of flour, how many cookies can Carey bake? Solve using unit rates.

IRISSAK [1]

First find out how many cookies one scoop of flour can make
If 2 scoops make 10
Then 1 scoop is --- 10/2
Which is 5
3 scoops of flour make
5*3=15

5 0

3 years ago

Read 2 more answers

Plz help!

vlabodo [156]

Answer:

$76.8

Step-by-step explanation:

As, So 20% of 64 will be the markup price.

So 20/100 x 64 = $12.8

Now Markup price = $12.8

And The retail price = markup price + original price = $12.8 + $64 = $76.8

5 0

3 years ago

The difference of the square of a number and 18 is equal to 3 times that number. Find

ololo11 [35]

Answer:

Step-by-step explanation:

To solve this, you can set up an equation as such:

x²-18= 3x

Now, rearrange this to make it an equation in standard form:

x²-3x-18=0.

Simply turn this equation into factored form:

(x-6)(x+3)= 0.

The only positive solution here is x=6.

7 0

3 years ago