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Soloha48 [4]
2 years ago
14

Jasmine has taken an online boating safety course and is now completing her end-of-course exam. As she answers each question, th

e progress bar at the bottom of the screen shows what ponion of the test she has finished. She has just completed Question 12, and the progress bar shows she is 20% complete. How many total questions are on the test?
​
Mathematics
1 answer:
dsp732 years ago
8 0

Answer:

There are 60 total questions on the course exam.

Step-by-step explanation:

Given that:

Number of questions finished by Jasmine = 12

Percentage shown on the bar = 20%

The total number of questions will be 100%, therefore, 20% of the questions are equal to 12.

Let,

x be the total number of questions on the course exam

20% of x = 12

\frac{20}{100}x=12\\0.2x=12

Dividing both sides by 0.2

\frac{0.2x}{0.2}=\frac{12}{0.2}\\x=60

Hence,

There are 60 total questions on the course exam.

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Which quadratic relation has a y-intercept of 8?
Tpy6a [65]

Answer:

y = 0.5 (x^2 -2x + 16) has a y-intercept of 8.

Step-by-step explanation:

The x-coordinate of every y-intercept is zero.  To determine which of the four quadratics given here has a y-intercept of 8, we need only substitute 0 for x in each; if the result is 8, we've found the desired quadratic.

O y = 0.5(x + 2)(x + 4) becomes y = 0.5(2)(4) = 4 (reject this answer)

O y = 0.5 (x - 2)(x + 8) becomes y = 0.5(-2)(8) = -8 (reject)

O y = 0.5(x2 -2x - 16) becomes y = 0.5(-16) = -8 (reject)

<em>O y = 0.5 (x2 -2x + 16) becomes y = 0.5(16) = 8 This is correct; that '8' represents the y-intercept (0, 8).</em>

6 0
2 years ago
What is the slope of this line?
White raven [17]

Answer:

<em>m</em> = 0

General Formulas and Concepts:

<u>Pre-Algebra</u>

  • Order of Operations: BPEMDAS

<u>Algebra I</u>

  • Slope Formula: m=\frac{y_2-y_1}{x_2-x_1}

Step-by-step explanation:

<u>Step 1: Define</u>

<em>Find points given from the graph.</em>

Point (0, 2)

Point (7, 2)

<u>Step 2: Find slope </u><em><u>m</u></em>

  1. Substitute:                    m=\frac{2-2}{7-0}
  2. Subtract:                       m=\frac{0}{7}
  3. Divide:                          m=0

Any horizontal line will have a slope of 0.

And we have our final answer!

3 0
3 years ago
Can someone answer this please
Alexxandr [17]

Answer:

Range: (-∞, 0]

General Formulas and Concepts:

<u>Algebra I</u>

  • Range is the set of y-values that are outputted by function f(x)

Step-by-step explanation:

When we graph the equation, we should see that our y-values span from -∞ to 0. Since 0 is a closed dot, it is inclusive in the range:

(-∞, 0] or y ≤ 0

4 0
3 years ago
What is 20b -2 + 34?
DaniilM [7]

Answer:

Dos mas treinta y cuatro da resultado a treinta y seis

Step-by-step explanation:

5+5=10

10+10=20

10+20=30

2+2=4

20+10+4+2=36

7 0
3 years ago
Does anybody understand this?
TiliK225 [7]

Answer:

A. &. D

Step-by-step explanation:

Open and to the right.

6 0
3 years ago
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