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3 years ago

Jenna has $500 in her account and withdraws $50 every Sunday to pay for her account after n lessons,

Mathematics

1 answer:

Lostsunrise [7]3 years ago

7 0

Answer:

What do you want for the answer?

This?

500-50n

Step-by-step explanation:

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What is the value of m in the equation 4m + 2(m + 1) = 9m + 5

ratelena [41]

M=-1

4m+2(m+1)=9m +5
4m+2m+2=9m+5
6m+2=9m+5
6m+2-6m= 9m+5-6m
2-5=3m+5-5
-3/3=3m/3
m=-1

3 0

3 years ago

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A square has an area of 40 units^2. Write an expression for the perimeter of the square.

marta [7]

Answer:

$\sqrt{40}$ =s

Step-by-step explanation:

The area of a square can be found by multiplying two of the sides of the square. So P=s*s, of "Perimeter equals side length time side length". We also know that all the sides of a square are the same side, so the perimeter of the sqaure can be found using the square by doing p= $s^{2}$ .

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3 years ago

A driver has three ways to get from one city to another. There is an 80 % chance of encountering atraffic jam given he is on rou

lukranit [14]

Answer:

The probability is 0.64

Step-by-step explanation:

What we want to calculate here is conditional probability.

Let P(A )= Probability of using route A = 50% = 0.5

Let P( B )= probability of using route B = 25% = 0.25

Let P (C )= probability of using route C = 25% = 0.25

Let T be the probability that he will be in a traffic Jam

The probability that he will be in a traffic Jam if he uses route A = 80%

Mathematically this is written as P( T | A) which is read as probability of T given A

so P( T | A) = 0.8

Same way for B and C which can be written as follows;

P( T | B) = 60% = 0.6

P( T | C) = 30% = 0.3

Now, what do we want to calculate?

He is in a traffic Jam, and we want to find the probability that he used route A. This means we want to find P(A) given T which can be written mathematically as P ( A | T)

We can find this using the other parameters and especially the equation below;

P ( A | T) = P(A) • P( T| A) / {P(A) • P ( T | A) + P(B)• P(T| B) + P(C) • P(T|C)

P( A | T) = (0.5 * 0.8)/ ( 0.5)(0.8) + (0.25)(0.6) + (0.25)(3) = 0.4/(0.4 + 0.75 + 0.075) = 0.4/0.625 = 0.64

4 0

3 years ago

Graph the equations to solve the system y= -2x+1 y= -x +4

Leokris [45]

Answer:

(-3, 7)

General Formulas and Concepts:

<u>Algebra I</u>

Functions

Graphing

Reading a Cartesian Plane
Coordinates (x, y)

Solving systems of equations by graphing

Step-by-step explanation:

Where the 2 equations intersect is the solution to the systems of equations.

6 0

3 years ago

It's a. not sure if its B. I'll give branliest!

atroni [7]

Answer:

P is complementary to x

Step-by-step explanation:

Complementary means adding to 90 degrees

P+x = 90 degrees

So P is complementary to x

4 0

3 years ago

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