3 years ago

Simplify -4z+2y-y+-18z a.-22z+y b.-14z+2 c.3y+22z d.y +14z

Mathematics

1 answer:

mario62 [17]3 years ago

8 0

Answer:

-22z+y

Answer is A :)

Step-by-step explanation:

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Calculating the degrees of freedom, the sample variance, and the estimated standard error for evaluations.

ki77a [65]

Answer:

The variance is $\sigma ^2 =25$

Step-by-step explanation:

From the question we are told that

The sample size is n = 21

The sum of squares is $SS = 500$

Generally the variance is mathematically represented as

$\sigma ^2 = \frac{SS}{n- 1}$

substituting values

$\sigma ^2 = \frac{ 500}{21- 1}$

$\sigma ^2 =25$

4 0

3 years ago

Please help ASAP I have no clue how to do this

Salsk061 [2.6K]

It’s a triangle
s
r t

rs= 2x+10 and st= x-4

the sides are equal so equal them together then solve

2x+10=x-4
+ 4 +4
2x+14=x

you got x alone so x=2x+14

now you plug in 2x+14 in for the x in rs and st

rs= 2(2x+14)+10
4x+28+10
4x+38

st= (2x+14)-4
2x+14-4
2x-10

6 0

3 years ago

PLS HELP MEE , WILL MARKTHE BRAINLIEST PLS

Sunny_sXe [5.5K]

Step-by-step explanation:

hopefully it is visible and makes sense