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3 years ago

Please help, I need an answer.

Mathematics

1 answer:

Harrizon [31]3 years ago

6 0

Answer:

y=-1/3x-11/3

(Not sure what point slope form is, but this is the equation for the points)

You might be interested in

Of all the people applying for a certain job 75% are qualified and 25% are not. The personnel manager claims that she approves q

Gwar [14]

Answer:

The probability is: 0.8889.

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: Approved

Event B: Qualified

Probability of a person being approved:

80% of 75%(qualified)

30% of 25%(not qualified). So

$P(A) = 0.8*0.75 + 0.3*0.25 = 0.675$

Probability of a person being approved and being qualified:

80% of 75%, so:

$P(A \cap B) = 0.8*0.75$

Find the probability that a person is qualified if he or she was approved by the manager.

$P(B|A) = \frac{P(A \cap B)}{P(A)} = \frac{0.8*0.75}{0.675} = 0.8889$

The probability is: 0.8889.

4 0

3 years ago

A woman invests $5800 in an account that pays 6% interest per year, compounded continuously.

mel-nik [20]

Answer:

Part a) $\$6,539.48$

Part b) $5.36\ years$

Step-by-step explanation:

we know that

The formula to calculate continuously compounded interest is equal to

$A=P(e)^{rt}$

where

A is the Final Investment Value

P is the Principal amount of money to be invested

r is the rate of interest in decimal

t is Number of Time Periods

e is the mathematical constant number

Part a) What is the amount after 2 years?

we have

$t=2\ years\\ P=\$5,800\\ r=0.06$

substitute in the formula above

$A=\$5,800(e)^{0.06*2}=\$6,539.48$

Part b) How long will it take for the amount to be $8000?

we have

$t=?\ years\\ P=\$5,800\\ r=0.06\\A=\$8,000$

substitute in the formula above and solve for t

$\$8,000=\$5,800(e)^{0.06t}$

$(8,000/5,800)=(e)^{0.06t}$

Applying ln both sides

Remember that

ln(e)=1

$ln(8,000/5,800)=0.06t$

$t=ln(8,000/5,800)/0.06=5.36\ years$

5 0

3 years ago

Please help me ‼️I am struggling bad <br> (x2+1)(x3-1)

iris [78.8K]

Answer:

26x²+26

Step-by-step explanation:

3 0

3 years ago

If there are 1000 grams in a kilogram in 454 grams in a pound how many pounds are there in a kilogram?

MaRussiya [10]

Answer:

2.2

Step-by-step explanation:

A kilogram is 2.2lbs so if you weigh yourself and it says you weigh 60k then you multiply 60 times 2.2 you get 132lbs.

6 0

4 years ago

PLEASE answer these math questions

zysi [14]

1. To find the square root, you have to square root them both.

Square root of 324 is 18, so x=-18, 1818

2. Divide 49 by 9. 49/9=5.44 then find the square root of 5.44 which is 2.3, x=-2.3, 2.3.

3. To do this one it is one of either 2 or 4 because it is not a perfect square, it can break down to square root of 16 and square root of 6, which then makes it +-4 square root 6.

4. This one is simple the square root of 34 is 5.8

5. Subtract each by 5 to get 6y^2=215 then divide each by 6. Y^2=34.8 then square root. Which makes y=+-5.9. Hope this helped.

3 0

3 years ago