Answer:
2
Step-by-step explanation:
Equation: p x r x n = I
$750 x 4% x n = $60
30 x n = $60
$60 / 30
n = <u>2</u>
<em><u></u></em>
<em>Hope this helps</em>
<em>-Amelia The Unknown</em>
The question is incomplete. The complete question is:
Demi os working on a representation about a famous mathematician for her math class. She decides to make her poster in the shape of a plus sign. What is the total area of Demi's poster? The image and the measurements of the poster are in the attachment.
Answer: Total area = 1360 square inches
Step-by-step explanation: From the attachment, the poster is formed by two rectangles one over the other and a central part, which is a square. So, the total area is the area of the 2 rectangles minus the area of the square
A = Ar - As
As these forms are regular, the area of both is A = width * length
Area of the 2 rectangle:
width = 20 in
length = 12+20+12 = 44 in
There are 2, then:
Ar = 2.20.44
Ar = 1760
Area of the square:
width = length = 20
As = 20²
As = 400
Total Area:
At = Ar - As
At = 1760 - 400
At = 1360
The total area of the poster is <em><u>1360 square inches</u></em>.
Answer:
either A or D
Step-by-step explanation:
but i think its D
Answer:
-7/3
Step-by-step explanation:
When finding slope from a graph, I always look for places where the graph crosses grid intersections. One of these is the y-intercept, (0, 40).
You have to go quite some distance to find another. It looks to me like the next grid crossing is at (30, -30). At this point, you can do either of two things:
- find the ratio of grid squares
- use the slope formula
What you want to calculate is the ratio of the change in vertical height (rise) to the change in horizontal distance (run). If you use grid squares, you need to make sure the grid has the same number of units horizontally as vertically. (Here a grid square is 10 units in each direction, so we're OK on that point.)
We have observed that the line falls 7 grid squares vertically for a change of 3 grid squares to the right. So, the slope using grid squares is ...
m = rise/run = -7/3
Using the slope formula, we calculate the slope to be ...
m = (y2 -y1)/(x2 -x1)
m = (-30 -40)/(30 -0) = -70/30 = -7/3
The slope of the line is -7/3.
