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Fiesta28 [93]
3 years ago
6

Help with 5 questions

Mathematics
1 answer:
AlexFokin [52]3 years ago
7 0
First what do u not understand. which part do u not understand
You might be interested in
The square of a real number c is 8 less than the square of 6 show equation
juin [17]

Answer:

  c^2 = 6^2 -8

Step-by-step explanation:

The square of c is c^2; the square of 6 is 6^2. for the former to be 8 less than the latter, we must have ...

  c^2 = 6^2 -8

8 0
3 years ago
35. Luke and Matthew ran a lemonade
gogolik [260]
70% 30 = 21 I highly recommended using google it’s so much easier then this app sometimes because you won’t have to answer other people’s questions hahaha I’m only using it bc I can’t find the answers on google for my homework
6 0
3 years ago
The gray area is the sidewalk. The area of the sidewalk is ___________ square units. A) 48 B) 56 C) 72 D) 84
tamaranim1 [39]
A i did this problem before with another user
3 0
3 years ago
The mean annual income for adult women in one city is $28,520 and the standard deviation of the incomes is $5600. The distributi
pshichka [43]

Answer:

E(\bar{x}) = 28520

Standard error of mean = 689

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = $28,520

Standard Deviation, σ = $5600

Mean of sampling distribution =

E(\bar{x}) = \mu = 28520

As per Central Limit Theorem, if the sample size is large enough, then the sampling distribution of the sample means follow approximately a normal distribution.

Sample size, n = 66

Since the sample size is large, we can use normal distribution for approximation.

Standard error of mean =

\displaystyle\frac{\sigma}{\sqrt{n}} = \frac{5600}{\sqrt{66}} = 689.31 \approx 689

7 0
3 years ago
Please explain how this digraph works.
dusya [7]

Angles XQL and MQR are congruent because they are vertical angles. So

209 - 13 <em>b</em> = 146 - 4 <em>b</em>

Solve for <em>b</em> :

209 - 13 <em>b</em> = 146 - 4 <em>b</em>

209 - 146 = 13 <em>b</em> - 4<em> b</em>

63 = 9 <em>b</em>

<em>b</em> = 63/9 = 7

Then the measure of angle XQL is

(209 - 13*7)º = 118º

3 0
3 years ago
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