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3 years ago

I am so confused. please help

Mathematics

1 answer:

Novosadov [1.4K]3 years ago

5 0

(1st) slope of the left dotted likw is 9/3 but simplified it is 3/1
(2nd) slope of the reflection line is -1/3

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Someone help me with this question

zalisa [80]

Answer:

Step-by-step explanation:

a) Complete the table

Monday Tuesday Wednesday Total

Female 21-14=7 38-13-7= 18 13 38

Male 14 33-18= 15 26-13 =13 80-38=42

Total 80-33-26= 21 33 26 80

b) P(the student is a female) = 38/80= 0.475

c) P(the student visited the library on Tuesday) = 33/80= 0.4125

7 0

4 years ago

Read 2 more answers

Danny made a mistake in the following problem.

mixas84 [53]

Line 3
since he added which is against the order of opreation rule he was supposed to multiply first then add
again what he was supposed to do is
Line 2:21+5+6(2)
Line 3:21+5+12

7 0

3 years ago

If two points on line l above have coordinates (0, A) and (2, −3), and the slope of the line is A, then what is the value of A?

Anna35 [415]

<u>ANSWER: </u>

If two points on line l above have coordinates (0, A) and (2, −3), then the value of A is -1

<u>SOLUTION:</u>

Given, two points on line l have coordinates (0, A) and (2, −3),

And the slope of the line is A,

We need to find a value.

We know that, slope of a line on which (x1, y1) and (x2, y2) are two points is given by

$\mathrm{m}=\frac{y_{2}-y_{1}}{\mathrm{x}_{2}-\mathrm{x}_{1}}$

Here,in our problem,

$\mathrm{m}=\mathrm{A}, \mathrm{x}_{2}=2, \mathrm{x}_{1}=0, \mathrm{y}_{2}=-3 \text { and } \mathrm{y}_{1}=\mathrm{A}$

now, substitute the values in formula we get

$\begin{array}{l}{A=\frac{-3-A}{2-0}} \\\\ {A=\frac{-3-A}{2}}\end{array}$

2A = -3 –A

2A+ A = -3

3A = -3

A = -1

Hence, the value of A is -1.

8 0

3 years ago

Simplify\:\sqrt[3]{27x^{15}}y^{24}

Free_Kalibri [48]

Answer:

$3x^{5}y^{24}$

Step-by-step explanation:

$\sqrt[3]{27x^{15}}y^{24} =$

$= \sqrt[3]{3^3x^{15}}y^{24}$

$= (3^3x^{15})^{\frac{1}{3}}y^{24}$

$= (3^3)^{\frac{1}{3}}(x^{15})^{\frac{1}{3}}y^{24}$

$= 3^{3 \times \frac{1}{3}}x^{15 \times \frac{1}{3}}y^{24}$

$= 3^1x^{5}y^{24}$

$= 3x^{5}y^{24}$

4 0

4 years ago

Pete roller skates with a constant speed of 16km/h.how far can he travel in 2 1/2 hours?

WINSTONCH [101]

$\frac{6}{x} = \frac{1}{2 \frac{1}{2} }$
use butterfly method:
(6)(2 1/2) = x
15 = x
x = 15

5 0

3 years ago

I am so confused. please help​

I am so confused. please help