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marishachu [46]
3 years ago
10

What is the value of x?

Mathematics
1 answer:
GenaCL600 [577]3 years ago
7 0

Answer:

<h2>x = 3</h2>

Step-by-step explanation:

Look at the picture.

We have the triangles 45° - 45° - 90° and 30° - 60° - 90°.

The sides of those triangles are in ratio:

1 : 1 : √2 and 1 : √3 : 2

Therefore

If AC = 6√2 then AB = BC = 6

If BC = 6 then x = 6 : 2 = 3

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Television networks frequently run public opinion polls on issues of concern. One network conducted a scientific poll asking a q
kobusy [5.1K]

Answer:

Option d

Step-by-step explanation:

Given that television networks frequently run public opinion polls on issues of concern. One network conducted a scientific poll asking a question concerning the approval rating of the way President Obama was handling the Iraq War. At about the same time a second network ran an online poll using a very similar question.

Observed data is

Poll              Scien      Online total

   

approve    339   385      724

disapprove 780        573     1363

                 1119        958     2087

H_0: Both scientific and online are consistent\\H_a: not consistent

(Two tailed chi square test)

Let us find out expected and chi square

Expected = row total x column total/grand total

The cell count expected in the online poll for those who approve

=\frac{724*968}{2087} \\=333.94

chi square = 7.81

Hence option d is right.

4 0
3 years ago
The absolute value of a number can be positive or negative. true or false?​
Anastaziya [24]

Answer:true

Step-by-step explanation:

its true i think

3 0
3 years ago
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Translate the given phrase to an expression. Subtract 2/7 from 25/28. Do not simplify
erastova [34]
25/28 - 2/7
it doesn’t need to be solved because it asked for an expression and not an equation, so no equal sign either
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3 years ago
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_______ + 8r2s4 – 3r3s3
Leno4ka [110]
You could say 8r+2 times s +4 or –5x2y4
5 0
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If f(x) varies directly with x and f(x)=40 when x=8, find the value of f(x) when x=2.
melamori03 [73]

f(x)=40

x=8

so if x=2 it would be 40/8 which is 5

6 0
3 years ago
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