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Paha777 [63]
3 years ago
10

4/9+r=-4/9 What is r

Mathematics
1 answer:
julsineya [31]3 years ago
6 0

Answer:

r = - 8/9

Step-by-step explanation:

\frac{4}{9} +  r =  \frac{ - 4}{9}  \\ r =  \frac{ - 4}{9}  -  \frac{4}{9}  \\ r =  \frac{ - 8}{9}

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In June 2005, a CBS News/NY Times poll asked a random sample of 1,111 U.S. adults the following question: "What do you think is
Shtirlitz [24]

Answer:

The appropriate null hypothesis is H_0: p = 0.25

The appropriate alternative hypothesis is H_1: p < 0.25

Step-by-step explanation:

Exactly a year prior to this poll, in June of 2004, it was estimated that roughly 1 out of every 4 U.S. adults believed (at that time) that the war in Iraq was the most important problem facing the country.

At the null hypothesis, we test if the proportion is still the same, that is, of \frac{1}{4} = 0.25. So

H_0: p = 0.25

We would like to test whether the 2005 poll provides significant evidence that the proportion of U.S. adults who believe that the war in Iraq is the most important problem facing the U.S. has decreased since the prior poll.

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H_1: p < 0.25

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3 years ago
Is AB a tangent why or why not??​
Minchanka [31]

Answer:

As angle B is a right triangle, the sides AB and CB are perpendicular to each other. From the property of all tangents to a circle given in the beginning it can be concluded that AB is a tangent of the circle

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3 years ago
Find the equation of the line that has slope -5 and passes through the point (1,-7)
RUDIKE [14]

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3 years ago
A student inscribes a triangle within a semicircle. What is the measure of ∠XYZ?
Dmitry [639]

Answer:

The correct answer is option A.  90°

Step-by-step explanation:

<u>Points to remember</u>

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<u>To find the measure of <XYZ</u>

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Two numbers total 42 and have a difference of 8 find the two numbers
FinnZ [79.3K]
X+y = 42
x-y = 8
x = 8+y

Substitute it in 1st equation,
8+y+y=42
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y = 17

Substitute it in 1st eq.,
x = 42-17 = 25

So, the two numbers are 25 & 17

Hope this helps!

5 0
3 years ago
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