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stellarik [79]
3 years ago
6

Twigs is an online polling website that allows users to easily create polls and vote on polls created by other users. A March 20

10 poll asked, "Has concern about autism influenced your decision about whether to vaccinate your chil had selected, "No, I'm not worried about it." You can conclude: _________
a. The great majority of parents who visit Twiigs are not influenced by concerns about autism when vaccinating their child.
b. The great majority of parents are not influenced by concerns about autism when vaccinating their child.
c. Nothing further because the sample is too small
d. Nothing further because the sample is not random
Mathematics
2 answers:
vesna_86 [32]3 years ago
5 0

Answer:

A

Step-by-step explanation:

since everyone that has answered the poll has done it through Twiigs, you cannot conclude that the great majority of parents are not influenced. However, you can conclude that the great majority of parents who visit Twiigs are not influenced by concerns about autism when vaccinating their child.

Elenna [48]3 years ago
4 0

Answer:

A

Step-by-step explanation:

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Factorize this expression completely <br>using (a-b)² formula<br>3a²- 36a + 108​
Novosadov [1.4K]

Answer:

3a^2 - 36a + 108  = (\sqrt{3}a - 6\sqrt{3} )^2

Step-by-step explanation:

3a^2 = (\sqrt{3} a)^2\\108 = 9 \times 4 \times 3= 3^2 \times 2^2 \times 3 = (3\times2 \sqrt{3} )^2 = (6\sqrt{3})^2

so, a = \sqrt{3}  a \ , \ b = 6\sqrt{3} \\\\(a - b)^2 = a^2 -2ab + b^2\\\\-36a = -2ab\\\\-36a = -2 \times \sqrt{3} a \times 6\sqrt{3}

Therefore ,

3a^2 - 36a + 108 = (\sqrt{3}a )^2 - 2(\sqrt{3}a \times 6\sqrt{3} ) + (6\sqrt{3} )^2  = (\sqrt{3}a - 6\sqrt{3} )^2

6 0
3 years ago
What is the square footage of a 13 foot by 14 foot circle?
sineoko [7]

{169}ft^{2}


3 0
3 years ago
Please help me i make my questions worth more, and give brainliest....
REY [17]

Step-by-step explanation:

(a-b)^2=a^2-2ab+b^2

X^2-2(X)(5)+5^2

Ans C

X^2-10X+25

7 0
3 years ago
Use the Distance Formula to find the distance to the nearest tenth between A(-7, -4) and B(-2, 0).
goldenfox [79]
A(-7,-4) B(-2,0)
√[(x'-x)^2+(y'-y)^2]
√(-2-(-7)^2+(0-(-4)^2
√(5^2)+(4^2)
√25+16
√41 

the distance is approximately 6.4 units
8 0
3 years ago
I NEED HELP PLS!!!!
hram777 [196]

Answer:

15

Step-by-step explanation:

For these kind of problems, its best to use a Venn Diagram.

Lets break down the information:

<em>There are 50 students total.</em>

<em>25 take Math competiton classes.</em>

<em>29 take Geometry</em>

<em>12 take history and </em><em><u>no math classes</u></em>

<em>19 take </em><em><u>both math classes</u></em>

Now, make a Venn Diagram.

[Look at the photo attached. Also, the blank spaces in the Venn Diagram are ones that no student takes.]

The 12 taking history and no math classes and 3 kids not taking any of those classes look like they're the only ones not taking either math class.

12 + 3 = 15.

So the answer is 15.

[I'm not sure if this is correct or if I made a mistake so please let me know! Thank you! I hope this helps!]

:)

5 0
3 years ago
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