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3 years ago

Question in the picture

Mathematics

1 answer:

mart [117]3 years ago

8 0

I will find x, so 4x-4=180, so 4x=184, so x=46

Sorry if i answered wrong I don't understand what it is asking for.

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Help me out, please....

alex41 [277]

Answer:

5 radical 3

Step-by-step explanation:

b = √c2 - a2

= √102 - 52

= √75

= 8.66025 = 5√3

8 0

3 years ago

Read 2 more answers

What is the value of 2 + b(a? + 4) when a = 2 and b = 4?

Rom4ik [11]

Answer:

Step-by-step explanation:

2+4(2+4)

=2+(4)(6)

=2+24

=26

3 0

3 years ago

You are interested in estimating the the mean age of the citizens living in your community. In order to do this, you plan on con

Assoli18 [71]

Question:

You are interested in estimating the the mean age of the citizens living in your community. In order to do this, you plan on constructing a confidence interval; however, you are not sure how many citizens should be included in the sample. If you want your sample estimate to be within 5 years of the actual mean with a confidence level of 97% , how many citizens should be included in your sample? Assume that the standard deviation of the ages of all the citizens in this community is 18 years.

Answer:

61.03

Step-by-step explanation:

Given:

Standard deviation = 18

Sample estimate = 5

Confidence level = 97%

Required:

Find sample size, n.

First find the Z value. Using zscore table

Z-value at a confidence level of 97% = 2.17

To find the sample size, use the formula below:

$n = (Z * \frac{\sigma}{E})^2$

$n = ( 2.17 * \frac{18}{5})^2$

$n = (2.17 * 3.6)^2$

$n = (7.812)^2$

$n = 61.03$

Sample size = 61.03

4 0

4 years ago

Please answer question ASAP! Use the triangle below to determine which of the following statements are true. (The answer choices

vagabundo [1.1K]

Choice A is true. This is the Pythagorean identity. One of the most fundamental trig identities you should memorize.

Choice B is false. Let A = 60 and B = 30 and you'll see the left hand side turn into 0.5 while the right hand side turn into -0.5

Choice C is true. This is a variation of the identity tan^2+1 = sec^2 (just subtract tan^2 from both sides)

Choice D is true as this is a more complicated variation of 1+tan^2 = sec^2

7 0

3 years ago

Uhh please help 4 spring break hamwork math btwww

kvasek [131]

Answer:

60x + 42y

Step-by-step explanation:

6(10x + 7y)

Use distribute property and multiply 6 to everything inside the parenthesis:

6 x 10x = 60x

6 x 7y = 42y

SO, 60x + 42y is the correct answer

5 0

3 years ago

Read 2 more answers