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3 years ago

Is –22 + 9 positive or negative?

Mathematics

2 answers:

Oduvanchick [21]3 years ago

8 0

Answer:

It would be negative 13 because if add a positive nine to a negative 22 you get negative 13.

Step-by-step explanation:

12345 [234]3 years ago

7 0

Negative since the answer would be -13

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A triangle has a base of two to the third power units and a height of chicken fourth power units what is the area of the triangl

kenny6666 [7]

I think you had an auto correct problem

4 0

2 years ago

The Director of Admissions at Kinzua University in Nova Scotia estimated the distribution of student admissions for the fall sem

VMariaS [17]

Answer:

Variance = 24900

Standard Deviation = 157.7973

Step-by-step explanation:

We are given the following in the question:

Number of admissions: 1000 1200 1500

Admissions Probability: 0.6 0.3 0.1

Formula:

$E(x) = \displaystyle\sum x_iP(x_i)\\E(x) = 1000(0.6) + 1200(0.3) + 1500(0.1)\\E(x) = 1110\\E(x^2) = \displaystyle\sum x_i^2P(x_i)\\E(x^2) = (1000)^2(0.6) + (1200)^2(0.3) + (1500)^2(0.1)\\E(x^2) = 1257000$

Variance =

$\sigma^2 = E(x^2) - (E(x))^2\\\sigma^2 = 1257000 -(1110)^2\\\sigma^2 =24900$

Thus, the variance is 24900.

Standard Deviation =

$\sigma = \sqrt{\sigma^2} = \sqrt{24900} = 157.7973$

Thus, the standard deviation is 157.7973

7 0

2 years ago

Can y’all help me out

Gnoma [55]

Answer:

X= -2

(I think)

Step-by-step explanation:

I hope this helped

8 0

3 years ago

What's the slope of (1, 4) and (0, 11) ?

Alisiya [41]

-7 is the slope.

the slope formula is x2,y2-x1,y1
0-1=-1
11-4=7

the y goes on top of the x in the notation, so 7/-1 can be simplified to -7.

Hope this helps:)

4 0

2 years ago

Read 2 more answers

Pi approx A cylinder has a height of 20 yards and a diameter of 18 yards . What is its volume ? Use 3.14 and round your answer t

kolezko [41]

Answer:

5086.8 cubic yards

Step-by-step explanation:

Given data

Height = 20yards

Diamter= 18 yards

Radius= 9 yards

The expression for the volume of a cylinder is given as

V=πr^2h

substitute

V=3.14*9^2*20

V=3.14*81*20

V=5086.8 cubic yards

3 0

3 years ago