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3 years ago

I need some help here fellas

Mathematics

1 answer:

nevsk [136]3 years ago

5 0

Step-by-step explanation:

Alicia is right, if a variable is by itself, it represents 1

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For the straight line defined by the points (4, 59) and (6, 83), determine the slope and y-intercept. do not round the answers.

amid [387]

Slope=(59-83)/(4-6)=12
equation of the line:
(y-59)/(x-4)=12
y-59=12x-48
y=12x+11
put x=0, y=11
so the y-intercept is 11

6 0

3 years ago

You get GPS units from two manufacturers, A and B. You get 43% of your units from A and 57% of your units from B. In the past, 2

defon

Answer:

0.5015 = 50.15% probability that it came from manufacturer A.

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: Defective

Event B: From manufacturer A.

Probability a unit is defective:

2% of 43%(from manufacturer A)

1.5% of 57%(from manufacturer B). So

$P(A) = 0.02*0.43 + 0.015*0.57 = 0.01715$

Probability a unit is defective and from manufacturer A:

2% of 43%. So

$P(A \cap B) = 0.02*0.43 = 0.0086$

What is the probability that it came from manufacturer A?

$P(B|A) = \frac{P(A \cap B)}{P(A)} = \frac{0.0086}{0.01715} = 0.5015$

0.5015 = 50.15% probability that it came from manufacturer A.

4 0

2 years ago

Mark bought a notebook for $1.45 and some pencils for $0.42 each. If the total cost was $6.91, how many pencils did he buy?

Lesechka [4]

B - 13

Okay, we know that Mark brought 1 notebook and the totally is 6.91 while one pencil costs $0.42.

x= number of pencils he brought.
we know the price of 1 notebook + the cost of pencils times the numbers of pencils he brought = total cost.

So the equation will be:

1.45 + 0.42x = 6.91 subtract 1.45 on both sides.
0.42x = 5.46 Then we solve for x by dividing both sides by 0.42
x= 13

So the number of pencils he brought is 13.

5 0

2 years ago

Read 2 more answers

Help please really needed

Y_Kistochka [10]

Answer:

the answer is C hope this helps

5 0

3 years ago

My mom packed my lunch three of the past five days, so the probability of my mom packing my lunch is 3/5. Is this Experimental o

Crank

Answer:

definitely theoretical. Seems how mom packed the lunch 3/5 times a week, the pattern will follow

Step-by-step explanation:

4 0

3 years ago

I need some help here fellas​

I need some help here fellas