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insens350 [35]
3 years ago
7

PLS HELP SHOW ALL YOUR WORKING OUT :D BRAINLIEST

Mathematics
1 answer:
vazorg [7]3 years ago
6 0

Answer:

18.1 cm

Step-by-step explanation:

Work out CD

\sqrt{16^{2}-7^{2}  } = 14.38749457 ⇒ Pythagoras Theorem

Use CD and AD to work out AC

\sqrt{14.38749457^{2}+11^{2}  } = 18.11077028 ⇒ Pythagoras Theorem

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The table shows the cost of taking a rideshare trip. Which description correctly reflects the way the charges are calculated?
Nadya [2.5K]

The table is an illustration of a linear function.

The description of the charges is: <em>A)  The ride requires a $14 initial fee, plus 50 cents per mile driven</em>

<em />

The base fee is the charges, when the number of miles is 0

From the table;

y = $14, when x = 0

So, the base fee is $14

Next, we calculate the slope (m)

m = \frac{y_2 - y_1}{x_2 - x_1}

From the table, we have:

m = \frac{16.5 - 14}{5-0}

m = \frac{2.5}{5}

m = 0.5

The above means that:

The cost per mile is $0.5 (i.e. 50 cents)

Hence, the description of the charges is: <em>A)  The ride requires a $14 initial fee, plus 50 cents per mile driven</em>

<em />

Read more about linear functions at:

brainly.com/question/20286983

5 0
3 years ago
You are an assistant director of the alumni association at a local university. You attend a presentation given by the university
NNADVOKAT [17]

Answer:

(0.102, -0.062)

Step-by-step explanation:

sample size in 2018 = n1 = 216

sample size in 2017 = n2 = 200

number of people who went for another degree in 2018 = x1 = 54

number of people who went for another degree in 2017 = x2 = 46

p1 = x1/n1 = 0.25

p2 = x2/n2 = 0.23

At 95% confidence level, z critical = 1.96

now we have to solve for the confidence interval =

<h2> p1 -p2 ± z*\sqrt{((1-p1)*p1)/n1 + ((1-p2)*p2/n2}</h2>

0.25 -0.23 ± 1.96*\sqrt{((1 - 0.25) * 0.25)/216 + ((1 - 0.23) *0.23/200}

= 0.02 ± 1.96 * 0.042

= 0.02 + 0.082 = <u>0.102</u>

= 0.02 - 0.082 = <u>-0.062</u>

<u>There is 95% confidence that there is a difference that lies between  - 0.062 and 0.102 on the proportion of students who continued their education in the years, 2017 and 2018.</u>

<u></u>

<u>There is no significant difference between the two.</u>

5 0
3 years ago
What is the difference between a linear function and a non linear function?
scoray [572]

Answer:

A difference is that a linear line is straight and a non linear is not

4 0
3 years ago
Andy, Brenda and Carla are running a race. in how many different ways can the students finish in first, second and third place
Bingel [31]
Let's call them A B and C.

ABC
ACB
BAC
BCA
CAB
CBA

so there's 6 different ways
7 0
3 years ago
Sally had 5 dollars she gave Kim 3 how much do she has
Ainat [17]
2 dollars remaining........
3 0
3 years ago
Read 2 more answers
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