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2 years ago

Abcd is a square. find bc

Mathematics

1 answer:

chubhunter [2.5K]2 years ago

3 0

Slope is equal to 20 2,0

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Nick and his cousin Sarah have the same birthday but Nick is 4 years older than cigarettes the variables that represents next ag

ad-work [718]

x = Nick's age y = Sara's age

Nick is 8 years older than Sara, therefore

y = x - 8

3 0

2 years ago

An average computer mouse inspector can inspect 50 mice per hour. The 48 computer mice inspectors at a particular factory can on

Ronch [10]

Answer: C. Yes, because -2.77 falls in the critical region .

Step-by-step explanation:

Let $\mu$ be the population mean .

As per given , we have

$H_0:\mu=50\\\\ H_a: \mu$

Since the alternative hypothesis is left-tailed and population standard deviation is not given , so we need to perform a left-tailed t-test.

Test statistic : $t=\dfrac{\overline{x}-\mu}{\dfrac{s}{\sqrt{n}}}$

Also, it is given that ,

n= 48

$\overline{x}=46$

s= 10

$t=\dfrac{46-50}{\dfrac{10}{\sqrt{48}}}=\dfrac{-4}{\dfrac{10}{6.93}}\\\\=\dfrac{-4}{1.443}\approx-2.77$

Degree of freedom = df = n-1= 47

Using t-distribution , we have

Critical value = $t_{\alpha,df}=t_{0.025,47}=2.0117$

Since, the absolute t-value (|-2.77|=2.77) is greater than the critical value.

So , we reject the null hypothesis.

i.e. -2.77 falls in the critical region.

[Critical region is the region of values that associates with the rejection of the null hypothesis at a given probability level.]

Conclusion : We have sufficient evidence to support the claim that these inspectors are slower than average.

Hence, the correct answer is C. Yes, because -2.77 falls in the critical region

4 0

3 years ago

What is 18 square root 3 equal

ahrayia [7]

2.62 is the answer but there’s actually way more numbers than that

8 0

2 years ago

Create a list of steps, in order, that will solve the following equation 1/4(x+5)^2-1=3

Paul [167]

Answer:

Add 1 to each side

Multiply each side by 4

Take the square root of each side

Subtract 5 from each side

Combine terms

Step-by-step explanation:

1/4(x+5)^2-1=3

Add 1 to each side

1/4(x+5)^2-1+1=3+1

1/4(x+5)^2=4

Multiply each side by 4

4*1/4(x+5)^2=4*4

(x+5)^2=16

Take the square root of each side

sqrt((x+5)^2)=±sqrt(16)

x+5 = ±4

Subtract 5 from each side

x+5-5 = -5 ±4

x = -5 ±4

Combine terms

x = -5+4 x = -5-4

x = -1 x = -9

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3 years ago

In Paige's scrapbook, she has completed 40 of the 50 pages. Each page is part of a spread, and each spread has a left and a righ

igor_vitrenko [27]

Answer:

Step-by-step explanation:

7 0

3 years ago

Read 2 more answers