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pochemuha
3 years ago
7

Need help with a algebra question thanks!

Mathematics
1 answer:
otez555 [7]3 years ago
8 0
It's the first one. If you need any help with graphs, I suggest going on desmos.com
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How do i plot the locus of points for x=y.
aniked [119]
The locus means the “set of all” so the locus off points where x = y is all points where the x and y coordinate are the same.

One example is (1,1). Another is (2,2). Here the point (x,y) has the same number for x as for y. If you plot a few points (1,1), (2,2), (3,3) you will see they all fall on the same line. It is a diagonal line with positive slope that divides the first and third quadrants exactly in half.

For x=3 we find points where the first number (the x coordinate) is 3. The second number can be anything. Some points are (3,1) (3,2) (3,3). These points all lie on a vertical line that intersects the x axis at 3.
8 0
3 years ago
3. What is the y-intercept of the line that passes through the point (-8,7) and is perpendicular to the line
slamgirl [31]

Answer:

if it is perpendicular then it would be 5 and only the slope would change from 2x to -1/2x

Hope I answered your question

7 0
3 years ago
Select the correct answer.
padilas [110]

Answer:

A. 0.099

Step-by-step explanation:

Conditional Probability

We use the conditional probability formula to solve this question. It is

P(B|A) = \frac{P(A \cap B)}{P(A)}

In which

P(B|A) is the probability of event B happening, given that A happened.

P(A \cap B) is the probability of both A and B happening.

P(A) is the probability of A happening.

In this question:

Event A: She does not have a heart attack.

Event B: tests predicts that she will have a heart attack

The doctors told her that the reliability of the stress test is 67%.

This means that there is a 100 - 67 = 33% of not having a heart attack if the test predicts she will have a heart attack, so:

P(B|A) = 0.33

70% risk of heart attack

So 100 - 70 = 30% probability of not having a heart attack, which means that P(A) = 0.3

What is the probability that Erin will not have a heart attack and the test predicts that she will?

P(B|A) = \frac{P(A \cap B)}{P(A)}

P(A \cap B) = P(B|A)*P(A) = 0.33*0.3 = 0.099

The correct answer is given by option A.

3 0
3 years ago
Which of the following steps would you use to<br> evaluate (a + b)??
frosja888 [35]

Answer:

(a+b)(a+b)

Step-by-step explanation:

5 0
3 years ago
Why do we divide whole numbers? PLS HELP
Evgesh-ka [11]

Answer:


Division of whole numbers means we will take a certain number of items and split them up into groups. ... The number we are dividing by is called the divisor. So in this problem two is the divisor. Then the answer is called the quotient.


8 0
3 years ago
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