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2 years ago

Slove for x Show all work

Mathematics

1 answer:

bulgar [2K]2 years ago

6 0

Answer:

x=15

Step-by-step explanation:

$18^2=12(x+12)\\\\324=12(x+12)\\\\323=12x+144\\\\\cfrac{180}{12} =\cfrac{12x}{12} \\\\x=15$

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Complete parts (a) through (c) below.

Yuki888 [10]

Answer:

a) $t_{crit}= 1.34$

b) $t_{crit}=-2.539$

c) $t_{crit}=\pm 2.228$

Step-by-step explanation:

Part a

The significance level given is $\alpha=0.1$ and the degrees of freedom are given by:

$df = n-1= 15$

Since we are conducting a right tailed test we need to find a critical value on the t distirbution who accumulates 0.1 of the area in the right and we got:

$t_{crit}= 1.34$

Part b

The significance level given is $\alpha=0.01$ and the degrees of freedom are given by:

$df = n-1= 20-1=19$

Since we are conducting a left tailed test we need to find a critical value on the t distirbution who accumulates 0.01 of the area in the left and we got:

$t_{crit}=-2.539$

Part c

The significance level given is $\alpha=0.05$ and $\alpha/2 =0.025$ and the degrees of freedom are given by:

$df = n-1= 11-1=10$

Since we are conducting a two tailed test we need to find a critical value on the t distirbution who accumulates 0.025 of the area on each tail and we got:

$t_{crit}=\pm 2.228$

4 0

3 years ago

Angelique is building a model of her home. Her house is 24 feet tall, and the home in her model is 8 inches tall. She wants to a

Leno4ka [110]

Her house is 24 feet tall = 24*12 inches = 288 inches

SO, 288/8 = 36 (Scaling factor)

5feet * 12 inches/feet = 60 inches

60 inches /36 = 1.667 inches.................< Figurine

3 0

3 years ago

Tim has a box of 15 markers. He gives 3 markers each to 4 friends. What expression can show the number of markers Tim has left?

Nina [5.8K]

15-(4x3) =3 , idk how to explain it but the answers 3 for sure

7 0

3 years ago

Read 2 more answers

How does 2π/4 simplify to π/4?

lana [24]

It doesn't
remember that
(x/g) times (y/z)=(x time y)/(g times z) so
2pi/4=(2 times pi)/(4 times 1) so
2pi/4=2/4 times pi/1=1/2 times pi/1=pi/2

5 0