3 years ago

Express the confidence interval

Mathematics

1 answer:

ELEN [110]3 years ago

3 0

The answer I p

Explain k
2/3:34;(5-6)

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How would I solve 7r=-7/2? I know the answer is -1/2 I just don't understand how to get -1/2 as my answer.

Sonja [21]

$7r=-\dfrac{7}{2}\\
r=-\dfrac{7}{2}\div7\\
r=-\dfrac{7}{2}\cdot\dfrac{1}{7}\\
r=-\dfrac{1}{2}$

8 0

3 years ago

URGENT.. pls help NO links

Svetllana [295]

Answer:

.83

Step-by-step explanation:

we want

(sports∩Senior)/Senior

we can see that sports∩senior= 25

and senior= 25+5+5=30

25/30= .83

7 0

3 years ago

Simplify and plz show work on a piece of paper

IrinaK [193]

●) -2 (3a - 4b)-6a + 3b
-2 (9a-7b)
●) 10 - 6a - 4y - (-2a) + 9y
10 - 6a - 13y - (-2a)
●) 9 (2x-6) - 3 (5-4x
12 (6x-11)

All I did was combine the numbers with the same variable

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3 years ago

|2| + |-13| =<br><br> BRAINLIST AND EXTRA POINTS

kirza4 [7]

Answer:

Step-by-step explanation:

|2| + |-13| =

2+13

8 0

3 years ago

Read 2 more answers

What is the length of a radius of a circle whose center is at (1, -2) and whose one point lies on a circle at (-5, 6)?

Arturiano [62]

Answer:

radius = 10

Step-by-step explanation:

The distance from the centre to the point on the circle is the radius r

Calculate r using the distance formula

r = $\sqrt{(x_{2}-x_{1})^2+(y_{2}-y_{1})^2 }$

with (x₁, y₁ ) = (1, - 2) and (x₂, y₂ ) = (- 5, 6)

r = $\sqrt{(-5-1)^2+(6-(-2))^2}$

= $\sqrt{(-6)^2+(6+2)^2}$

= $\sqrt{36+8^2}$

= $\sqrt{36+64}$

= $\sqrt{100}$

= 10

4 0

3 years ago