Someone pls help me I will make you as brain

Answers

Answer 1

Answer: The answer is (-4,0)

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The weights for a population of North American raccoons have a bell-shaped frequency curve with a mean of about 12 pounds and a standard deviation of about 2.5 pounds. About 95% of the weights for individual raccoons in this population fall between what two values?

Answers

Answer:

Step-by-step explanation:

Given that the weights for a population of North American raccoons have a bell-shaped frequency curve with a mean of about 12 pounds and a standard deviation of about 2.5 pounds

Since bell shaped is given we can assume that this follows a normal distribution symmetrical about the mean.

To find 95% two values we can use Z critical value for 95%

i.e. ±1.96

95% will lie between 12±1.96(2.5)

= 12±4.9

=(7.1, 16.9)

How much would $500 invested at 4% interest compounded continuously be worth after 7 years? Round your answer to the nearest cent. A. $640.00
B. $648.71
C. $657.97
D. $661.55

Answers

The answer is D. $661.55

A = P * eᵃˣ
A - the future value
P - the principal
a - the rate
x - the period of time

We know:
A = ?
P = $500
a = 4% = 4%/100% = 0.04
x = 7

A = P * eᵃˣ
A = 500 * e⁰.⁰⁴*⁷
A = 661.55

Simplify (b^(9))/(b^(11)) and write answer using only positive exponents

Answers

Answer:

1/(b^2)

Step-by-step explanation:

using exponential rules, we know that the problem can be simplfied by subtracting the exponents

b^(11-9)

b^(-2)

which then just simplifies to

1/(b^2)

Please help, I don’t get it

Answers

Answer:

28°

Step-by-step explanation:

The angles in a triangle add up to 180°.

180 - 118 - 34 = 28

You can jog around your block twice and the park once in 10 minutes. you can jog around your block twice and the park 3 times in 22 minutes. a. write a system of linear equations that represents this situation. let x represent the number of minutes it takes you to jog around your block and y represent the number of minutes it takes you to jog around the park. system of equations:

b. how long does it take you to jog around the park? it takes you minutes to jog around the park.

Answers

Answer:

Part a) The system of equations is

$2x+y=10$

$2x+3y=22$

Part b) The number of minutes it takes you to jog around the park is $6\ min$

Step-by-step explanation:

Part a) Write a system of linear equations

Let

x-----> the number of minutes it takes you to jog around your block

y---> the number of minutes it takes you to jog around the park

we know that

$2x+y=10$ ----> equation A

$2x+3y=22$ ----> equation B

Part b) How long does it take you to jog around the park?

Multiply equation A by -1 both sides

$-1(*2x+y)=-10$ ------> $-2x-y=-10$ ----> equation C

Adds equation B and equation C

$2x+3y=22\n-2x-y=-10\n-------\n 3y-y=22-10\n2y=12\ny=6\ minutes$

Find the value of x

$2x+(6)=10$

$2x=10-6$

$x=4/2=2\ minutes$

Final answer:

Write the information as a system of linear equations: 2x + y = 10 and 2x + 3y = 22. Solving these equations, we find that it takes 6 minutes to jog around the park.

Explanation:

Given the information provided in the question, we first need to represent the given information through a system of linear equations. Following the instructions in the question, let x represent the time in minutes to jog around the block, and y represent the time in minutes to jog around the park.

From the given problem, we know:

2x + y = 10
2x + 3y = 22

To find how long it takes you to jog around the park (the value of y), we can use the method of substitution or elimination. In this case, let's use the method of substitution: we can start by solving the first equation for 2x, giving us 2x = 10 - y.

Substituting that into the second equation gives us 10 - y + 3y = 22, simplifying which leads to 2y = 12, and further simplification yields y = 6. Therefore, it takes you 6 minutes to jog around the park.

Learn more about system of linear equations here:

brainly.com/question/20379472

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Rachel is a stunt driver. One time, during a gig where she escaped from a building about to explode(!), she drove to get to the safe zone at 242424 meters per second. After 444 seconds of driving, she was 707070 meters away from the safe zone. Let DDD represent the distance (in meters) from the safe zone after ttt seconds. Complete the equation for the relationship between the distance and number of seconds.