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3 years ago

We get the same result if we multiply a number by 4 or if we multiply the number by 7 and then add 9

1 answer:

7 0

No we don’t say you multiply 4 and 6 you get 24 then add 9 you get 33 and then say you multiply 7 and 3 which is 21 then you add 9 you get 30 so you wouldn’t get the same results

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Please help me with these five math questions

kykrilka [37]

1.) false

2.) true

3.) k=.7777777

4.) 15 3/4-m=8 1/4

5.) m=7 1/2

8 0

3 years ago

I need help! do i subtract the 45-64? or add!?

Len [333]

Answer:

19°

Step-by-step explanation:

180-64=116

116+45=161

180-161=19

4 0

2 years ago

Read 2 more answers

What is the product of 3.6 x 4.2<br><br> How did you find it.

mixas84 [53]

Answer:

15.12

Step-by-step explanation:

3.6 x 4.2

first aline the decmials like you would regularly do to multiply.

Then multiply 2 x 6=12 and then 2 x 3=6 and put them down were you would already do noramly multiplying.

and then muliply 4x6=24 and 4x3=12 and do the same thing as you would do normaly and then add 72 and 144 to get 1512 and then count your decmail placing. which is 2 placeing in total which makes 1512 into 15.12

and now you done!

Example of how it should look...

3 . 6

× 4 . 2

+ 7 . 2

+ 1 4 4

= 1 5 1 2

6 0

3 years ago

A survey was conducted that asked 1004 people how many books they had read in the past year. Results indicated that x overbarequ

melisa1 [442]

Answer:

Step-by-step explanation:

Given that a survey was conducted that asked 1004 people how many books they had read in the past year.

Results are:

x bar =12.5

s = 16.6

n = 1004

Std error of sample = $\frac{s}{\sqrt{n-1} } =\frac{16.6}{\sqrt{1003} }\\=0.524152\\=0.524$

Since population std dev is not known t critical value can be used for confidence interval.

df = 1004-1 =1003

t critical = 1.96

Margin of error $= 1.96(std error) =1.027$

Confidence interval lower bound $= 12.5-1.027 = 11.473$

Upper bound $= 12.5+1.027 = 13.527$

6 0

3 years ago

Which polynomial is equivalent to 4n + 5^2

tankabanditka [31]

Answer:

16n^2+40n+25

Step-by-step explanation:

4 0

3 years ago