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MrMuchimi
2 years ago
12

1. "The sum of a number and 4.

Mathematics
1 answer:
Norma-Jean [14]2 years ago
7 0

Answer:

a+4=

Step-by-step explanation:

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What is the correct way to write 6. 3×10−8 in standard notation?.
Vsevolod [243]

Answer:

I think it is .000000063

(7 zeros behind the decimal.)

Hope this helps!!!

Step-by-step explanation:

pls mark Brainliest

8 0
2 years ago
Part A: Sam rented a boat at $225 for 2 days. If he rents the same boat for 5 days, he has to pay a total rent of $480.
miss Akunina [59]

Answer:

Here's what I get.

Step-by-step explanation:

Part A. Equation in standard form

The question is asking you to find the equation of a straight line that passes through two points

Let x = the number of days

and y = the cost

Then the coordinates of the two points are (2,225) and (5,480).

(i) Calculate the slope of the line

\begin{array}{rcl}m & = & \dfrac{y_{2} - y_{1}}{x_{2} - x_{1}}\\\\& = & \dfrac{480 - 225}{5 - 2}\\\\& = & \dfrac{255}{3}\\\\& = & 85\\\end{array}

In other words, the daily rental is $85/day.

(ii) Calculate the y-intercept

\begin{array}{rcl}y & = & mx + b\\480 & = & 85 \times 5 + b\\480 & = & 425 + b\\b & = & 55\\\end{array}

(iii) Write the equation for the line

y = 85x + 55

That is, the cost is $55  plus $85/day

Part B. Equation in function notation

Replace y with ƒ(x)

ƒ(x) = 85x + 55

Part C. Graphing

Let's say you want to plot a graph of the rental cost for up to ten days.

(i) Calculate two points on the graph.

When x = 0, y = 85; when x = 10, y = 905.

(ii) Scale your axes

A good number of intervals is about ten.

Your x-axis should have tick marks at 1-day intervals.

Your largest y-value is 905. Ten intervals would make about $90/interval. However, you should round that up to $100/interval for easy interpolation.

Your y-axis will run from 0 to $1000 in $100 intervals.

Plot your two points and draw a straight line through them.

(iii) Axis labels

x represents the number of days, so the label on the x-axis could be "No. of days."

y represents the cost of renting the boat, so the label on the y-axis could be "Rental cost."

Your graph should resemble the one below.

4 0
3 years ago
Pls help me<br> Identify the amplitude and period from the graph
dybincka [34]

Check the picture below.

notice, the period is the length of the part in the graph that is being repeated.

5 0
2 years ago
A pilot scheduled to depart at 4:00 pm, but due to air traffic, her departure has been delayed by 10 minutes. Air traffic contro
RUDIKE [14]
<h3>Answer: Choice A</h3>

y = (1/3)x+10

=============================================================

Explanation:

x = number of minutes of the original flight

Because the pilot travels 3 times faster than before, it means she travels 1/3 of the original time. If she took x minutes on the original flight, then she will take (1/3)x minutes for the new faster flight.

Then add on the 10 minute delay to end up with (1/3)x+10

5 0
1 year ago
Read 2 more answers
Tony’s Electronics is marking down the price of a TV 23% from the original price of $175. Which expression can be used to find t
mariarad [96]

Answer: the correct answer is 175 - 0.23(175)

Step-by-step explanation:

6 0
2 years ago
Read 2 more answers
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