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3 years ago

find the critical t value for each of the following confidence intervals: 90% confidence interval when n = 20

Mathematics

1 answer:

Ira Lisetskai [31]3 years ago

6 0

The answer is n=40 and that’s because bxndndns

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(-1)×(-2)×10=? (this is integers)

VLD [36.1K]

Answer:the first one

Step-by-step explanation:

i am teacher lol

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2 years ago

A rectangle is drawn on a coordinate plane. Three vertices of the rectangle are points L(−3,10) , M(6,10) , and P(−3,−6) . Point

vovangra [49]

Hello!
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The answer is 16.
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Hope this helps and have a great day!

3 0

3 years ago

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-8z+(4.5)+3.5z+7y-1.5

bogdanovich [222]

Answer:

$\boxed{\sf{7y+3-4.5z}}$

Step-by-step explanation:

In order to combine like terms, you have to isolate x and y from one side of the equation.

$\sf{-8z+\left(4.5\right)+3.5z+7y-1.5}$

First, thing you do is remove parentheses.

$\Longrightarrow: \sf{-8z+4.5+3.5z+7y-1.5}$

Solve.

Then, you combine like terms.

$\Longrightarrow:\sf{-8z+3.5z+7y+4.5-1.5}$

Add/subtract the numbers from left to right.

-8z+3.5z=-4.5z

Rewrite the problem down.

$\Longrightarrow: \sf{-4.5z+7y+4.5-1.5}$

Solve.

4.5-1.5=3

$\Longrightarrow: \boxed{\sf{7y+3-4.5z}}$

Therefore, the correct answer is 7y+3-4.5z.

I hope this helps, let me know if you have any questions.

6 0

2 years ago

PLS HELP IT IS EZZZZZZZZZZZZZZ Latavia purchased adult and child tickets for the fall festival. Tickets cost $14.88 for each adu

charle [14.2K]

Answer:

14.88x + 8.88y

Step-by-step explanation:

Just multiply the numbers:

14.88x + 8.88y

7 0

3 years ago

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Solve the equation by Completing the Square x2 – 10x + 13 = 0

user100 [1]

Answer:

$x=5+\sqrt{12}$

$x=5-\sqrt{12}$

Step-by-step explanation:

$x^2-10x+13=0$

$x^2-10x=-13$

$x^2-10x+(\frac{10}{2})^2 =-13+(\frac{10}{2})^2$

$x^2-10x+(5)^2=-13+(5)^2$

$x^2-10x+25=-13+25\\x^2-10x+25=12$

Factor.

$(x-5)^2=12$

Extract the square root.

$x-5=\frac{+}{} \sqrt{12}$

Add 5

$x=5+\sqrt{12}$

$x=5-\sqrt{12}$

4 0

3 years ago

Read 2 more answers