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katrin2010 [14]
3 years ago
6

Identify the type of angel pair and solve for x

Mathematics
1 answer:
irina [24]3 years ago
7 0
12x+25 + 3x - 10 = 180
15x + 15 = 180
15x = 165
    x = 11
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Suppose you want to estimate the proportion of traditional college students on your campus who own their own car. From research
Lapatulllka [165]

Answer:

2,655 students

Step-by-step explanation:

The z-score for a 99% confidence interval is z = 2.576

The standard error for a proportion p is:

SE = z*\sqrt{\frac{p*(1-p)}{n} }

For a proportion of p =0.20, in order to ensure a standard error of 0.02, the sample size 'n' must be:

0.02 = 2.576*\sqrt{\frac{0.2*(1-0.2)}{n}}\\n=2,654.31

Rounding up to the next whole student, the sample size needed is 2,655 students.

5 0
3 years ago
Which is bigger, 9/17 or 5/6?
d1i1m1o1n [39]
5/6 is bigger than 9/17
5 0
3 years ago
If 3 is added to a number and the sum is multiplied by 7,gives 91 as result. Find the number.​
WINSTONCH [101]

Answer:

10

Step-by-step explanation:

10+3 = 13

13 x 7 = 91

4 0
3 years ago
Read 2 more answers
Marlene earned $178 at her summer job. She already had savings of $98.25. She buys a T-shirt for $19.50. How much money does she
Stels [109]
$256.75
Add $178 + $98.25= $276.25
Then $276.25 - $19.50 = $256.75
7 0
2 years ago
Given the piecewise function shown below, select all of the statments that are true.
timurjin [86]
The <span>given the piecewise function is :
</span>
f(x) = \[ \begin{cases} &#10;      2x & x \ \textless \  1 \\&#10;      5 & x=1 \\&#10;      x^2 & x\ \textgreater \ 1 &#10;   \end{cases}&#10;\]

To find f(5) ⇒ substitute with x = 5 in the function → x²
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To find f(2) ⇒ substitute with x = 5 in the function → x²
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To find f(-2) ⇒ substitute with x = 5 in the function → 2x
∴ f(-2) = 2 * (-2) = -4

To find f(1) ⇒ substitute with x = 1 in the function → 5
∴ f(1) = 5
================================
So, the statements which are true:<span>
\framebox {B. f(2) = 4} \ \framebox {D. f(1) = 5}</span><span></span>
8 0
3 years ago
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