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densk [106]
3 years ago
12

Solve each equation by using square roots 3x^2-15=0

Mathematics
1 answer:
umka21 [38]3 years ago
8 0

Answer:

Step-by-step explanation:

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A random number generator is used to select a number from 1 to 100 what is the probability of selecting number 151
topjm [15]
0.

It is impossible for 151 to be selected, as it is outside the range of numbers (1 to 100) that can be selected. Therefore the probability is 0.
4 0
3 years ago
Choose all the lines that are parallel to the line pictured in the graph bellow.
viktelen [127]

Answer:

a. y = -½x

b. y = -½x + 3

c. 2y = -x - 4

e. x + 2y = 8

Step-by-step explanation:

Parallel lines have the same slope. Therefore, the lines that will be parallel to the given line on the graph would have the same slope as the line of the graph.

First, find the slope of the line on the graph:

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

Use the coordinates of any two points on the line. Let's use (-4, 0) and (0, -2)

m = \frac{-2 - 0}{0 -(-4)} = \frac{-2}{4} = -\frac{1}{2}

Slope of the line on the graph is -½.

Check each given line equation, ensure they are in the slope-intercept form and find out if the value of their slope is the same as -½.

Slope-intercept form is given as y = mx + b, where, m = slope.

Option 1: y = -½x

The slope of this line is -½, therefore it is parallel to the line on the graph.

Option 2: y = -½x + 3

The slope of this line is also -½, therefore it is parallel to the line on the graph.

Option 3: 2y = -x - 4

Rewrite in slope-intercept form.

y = -x/2 - 4/2

y = -½x - 2

The slope of this line is -½, therefore it is parallel to the line on the graph.

Option 4: y = 2x - 5.

The slope of this line is 2, therefore it is NOT parallel to the line on the graph.

Option 5: x + 2y = 8

Rewrite in slope-intercept form.

2y = 8 - x

y = 8/2 - x/2

y = 4 - ½x

The slope of this line is -½, therefore it is parallel to the line on the graph.

3 0
3 years ago
Hi there can anyone help me with this please
GuDViN [60]
The answer is 85 let me explain:

All you do for the mean is add all the values(numbers) together, and then divide by the amount o f numbers.

so your number set is 

87,84,86,79,84,90

so all we do is add them all together

87 + 84 + 86 + 79 + 84 + 90

which equals 510

then we divide by the amount of values (numbers) there are.

since there are 6 numbers in this data set we have to divide  510 by 6

which gives us a quotient of 85

so 85  is your answer.



4 0
3 years ago
The ratio of men to women at a lecture is 2 to 5. A total of 63 people are at the lecture. How many are men? Show your work.
kolbaska11 [484]

Answer:

Ever breathe just to flex on dead people???????????????????????????????

Step-by-step explanation:


3 0
3 years ago
Which of the following is a radical equation?
Komok [63]

Answer:

C. \sqrt{x}+3=13

Step-by-step explanation:

We know that,

A radical equation is the equation in which the variable is under the radical.

According to the options, we see that,

In the equation \sqrt{x}+3=13, the variable is under the radical.

All other equations have constant number under the radical.

Thus, we get,

Equation C i.e. \sqrt{x}+3=13 is a radical equation.

6 0
2 years ago
Read 2 more answers
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