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Firlakuza [10]
2 years ago
15

Please help I don't understand

Mathematics
1 answer:
aniked [119]2 years ago
5 0

Answer:

The expression can be written as:

5(2) + 6(3) + 2(4).

if I'm wrong, please tell me

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The American Academy of Periodontology released a survey, revealing that 27% of US adults admit they lie to their dentist about
Y_Kistochka [10]

Answer:

A: H0: p = 0.27; Ha: p > 0.27

Step-by-step explanation:

The parameter is the population proportion.

According to the survey conducted by the American Academy of Periodontology, the proportion of of US adults who admit they lie to their dentist about how often they floss their teeth is 27%.

This means the null hypothesis is :

H_0: p=0.27

Periodontist Dr. Garcia believes that the percentage seems low, so his claim is that the percentage should be more than 27%.

This means, the alternate hypothesis is

H_{a}:p \: > \: 0.27

Therefore the correct choice is A.

5 0
4 years ago
There is 40% decreased in price on a sale it is further decreased by 5%,find the total decreased percentage.
VladimirAG [237]
Hope it helps

Answer:40%+5%=45%
3 0
3 years ago
If the sphere shown above has a radius of 11 units then what is the approximate volume of the sphere
adell [148]

Answer:

Volume of the sphere=5563.58units^3

Step-by-step explanation:

Volume of the sphere= \frac{4}{3} *\pi *r^3

The sphere has given radius(r)= 11 units

Putting the value of the radius in the formula;

     Volume of the sphere:

                                     = \frac{4}{3} *3.14*11*11*11

                                 =1.33*3.14*11*11*11

                                =4.18*11*11*11

                               =4.18*1331

            Volume   =5563.58units^3

The volume of the sphere with radius of 11 units is 5563.58units^3

8 0
3 years ago
Find the gradient of the line passing through (6,8) and (4,10)
Mariulka [41]

Question:

Find the gradient of the line passing through (6,8) and (4,10).

Answer:

-1 is the right answer.

Step-by-step explanation:

Slope of the line = The gradient of the line

Gradient of the line is known as change in the value of y-axis by change in the value of x-axis

Gradient = ∆y\∆x

Gradient = \frac{y_ 2 - y_1}{x_2 - x_1}  =  \frac{(10 - 8)}{(4 - 6)}  =  \frac{(2)}{(- 2)} =\boxed{- 1}\\

7 0
3 years ago
Which equation represents the line shown on the coordinate grid below?
kondor19780726 [428]
I thinks it’s A or C )) but it’s not b or d, I’m pretty sure. So imma go with A or c
5 0
2 years ago
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