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3 years ago

Write a expression that is equivalent of 4+3(5+x)

Mathematics

1 answer:

stepladder [879]3 years ago

3 0

Answer: 19 + 3x

Step-by-step explanation:

Given : 4 + 3(5+x)

expanding , we have

4 + 15 + 3x

= 19 + 3x

Therefore :

4 + 3 ( 5 + x ) = 19 + 3x

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The value of a boat, in dollars, x years after its purchase is represented by the function.

Furkat [3]

Given the function f(x) = 10000(0.73)^x

<span>Where y is The value of a boat, in dollars, </span> <span>x years after its purchase </span>
at x = 1
f(1) = 10000(0.73)^1
f(1) = $7300
at x = 2
f(2) = 10000(0.73)^2
f(2) = $ 5329
so the decrease
D = $7300 - $ 5329
D = $ 1971

5 0

4 years ago

The mean number of hours of part-time work per week for a sample of 526526 college students is 2828. If the margin of error for

sveta [45]

Answer:

The 99% confidence interval for the mean number of hours of part-time work per week for all college students is between 25.8 and 30.2.

Step-by-step explanation:

A confidence interval has the following format.

$\mu_{x} \pm M$

In which $\mu_{x}$ is the mean of the sample and M is the margin of error.

In this problem, we have that:

$\mu_{x} = 28, M = 2.2$

$\mu_{x} - M = 28 - 2.2 = 25.8$

$\mu_{x} + M = 28 + 2.2 = 30.2$

The 99% confidence interval for the mean number of hours of part-time work per week for all college students is between 25.8 and 30.2.

4 0

3 years ago

Write the equation of the line graphed at the right.

tatyana61 [14]

Answer:

x = -3

Step-by-step explanation:

You can see on the graph, it’s going straight vertically. The x value will always be -3 while the y value is infinite.

8 0

3 years ago

Read 2 more answers

Vanessa bought a house for $268,500. she has a 30 year mortgage with a fixed rate of 6.25%. vanessa’s monthly payments are $1,59

Andrej [43]

Based on the calculation below, the amount of vanessa’s down payment is $9,314.45.

<h3>Calculation of down payment</h3>

First, we have to calculate the balance after deducting vanessa’s down payment using the formula for calculating the present value (PV) of an ordinary annuity as follows:

PV = P * ((1 - (1 / (1 + r))^n) / r) …………………………………. (1)

Where;

PV = Present value or balance after deducting vanessa’s down payment = ?

P = Monthly payment = $1,595.85

r = Monthly interest rate = 6.25% / 12 = 0.0625 / 12 = 0.00520833333333333

n = number of months = 30 * 12 = 360

Substitute the values into equation (1), we have:

PV = $1,595.85 * ((1 - (1 / (1 + 0.00520833333333333))^360) / 0.00520833333333333) = $259,185.55

Now, the amount of vanessa’s down payment can be calculated as follows:

Vanessa’s down payment = Cost of the house – PV = $268,500 - $259,185.55 = $9,314.45

Learn more about the present value of an ordinary annuity here: brainly.com/question/17112302.

#SPJ4

7 0

2 years ago

Betty makes an 8% commission on any artwork she sells. If she sells $125 worth of artwork, how much is her commission?

horsena [70]

Answer:

$10

Step-by-step explanation:

125x.08= $10

hope it helps:)

5 0

4 years ago