<img src="https://tex.z-dn.net/?f=3457%20%5Ctimes%20461%20%2B%2078%20-%2049%20%2B%2074" id="TexFormula1" title="3457 \times 461

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Tems11 [23]

2 years ago

+ 78 - 49 + 74" alt="3457 \times 461 + 78 - 49 + 74" align="absmiddle" class="latex-formula">

Mathematics

1 answer:

andriy [413]2 years ago

7 0

The answer would be 1593780

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Math property x+(-x)=0

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Answer:

True

Step-by-step explanation:

Bcs, in the equation x+(-x)=0 you do x-x ( which is basically x+ -x) and they cancel each other out. This means your equation is 0=0

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Are 5.5 + 2.1x + 3.8x - 4.1 and 1.4 5.9x equivalent

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2 years ago

Read 2 more answers

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:

$t_{crit}=\pm 2.228$

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2 years ago

Which is the value of this expression when p = - 2 and q = -1?

Elan Coil [88]

Answer: -4 is the answer

Step-by-step explanation:

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2 years ago