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gregori [183]
3 years ago
8

Help me please I'm not sure

Mathematics
2 answers:
Ahat [919]3 years ago
8 0
Help you with what? Be specific. <span />
Galina-37 [17]3 years ago
6 0
Those are all just simple addition and subtraction problems.. just use a calculator if you're having trouble
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How do I solve 3x+3y=-3 and y=5x-1 each system by substitution?
Nastasia [14]
Have u tried 3x-3y
I don't know the other one sorry
7 0
3 years ago
I need help on model With math
Marina CMI [18]
Making a model is simple. You could use a number line or draw one out. I could help you, but I don't have a problem to work with...
8 0
3 years ago
Can someone explain this I dont understand it
IrinaVladis [17]
Y = mx + b

m is your slope AKA rate of change
b is the y intercept.

from the graph we can see that the y intercept (b) is 15. (look at the y axis and see what point the line crosses on the y, here it is 15, in-between 10 and 20)

slope is rate of change. to figure this out remember slope = rise over run:

slope = \frac{rise}{run}

so pick two points. how much does one point rise after the other point you picked? In the graph it rises 1 square so rise = 1

Now looking at the same two points, how far away from each other are they on the x axis? Looking at the graph they are 2 squares away from each other. so run = 2

Now plug these numbers into the rise over run formula:

slope \: = \frac{1}{2}

Now we have everything we need to put into our formula for a line:

y = mx + b
y = \frac{1}{2} x + 18

For number 16 you should get:

y = \frac{1}{5} x + 3

after you do the same steps again yourself
8 0
3 years ago
If the ratio of the radii of two spheres is 2:3, the ratio of their surface areas will be 8:27.
Slav-nsk [51]
<span>The ratio of 2 similar areas is the square of the ratio of their RADIUS or (sides)
R²=(2/3)² = 4/9 This should be the answer

Whereas R³ = (2/3)³ = 8/27 is the ratio of their volume & not area



</span>
4 0
3 years ago
Identify the relationship between the graphs of
Tcecarenko [31]

Answer:

parallel

Step-by-step explanation:

Because the 2 line have same slopes but different y int, they are parallel

8 0
3 years ago
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