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Korolek [52]
3 years ago
8

I need help with this math question on my study guide!

Mathematics
1 answer:
dalvyx [7]3 years ago
5 0
Sadly is right.  You must have practiced this stuff in middle school
until it was coming out of your ears.  Fortunately, you have a chance
to relearn it now.  You should do that ... it'll be important in any math
course you ever take.

'm' is the slope of the line on the graph.

The slope is

                (the change in 'y' between any two points on the line)
divided by
               (the change in 'x' between the same two points).

You can choose any two points on the line, and the slope is always the same.

To make it easy, look at the two points on this graph where the line crosses
the x-axis and the y-axis.

Going between these two points ...
-- the line goes up, from  y=0  to  y=4.  The change in 'y' is  4 .
-- the line goes to the right, from  x=-2  to  x=0.  The change in 'x' is  2 .

           'm' = the slope  =  (4)/(2)  =  2 .

The  "y-intercept"  is the place where the line crosses the y-axis.
On this graph, that's the point where  y=4 .

The equation of EVERY straight line on ANY graph is:

                 Y  =  (the slope) times 'x'  +  (the y-intercept) .

So the equation of THIS line on THIS graph is

                 Y = 2x + 4 .
 
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Deborah needs to make 16 costumes for the school play .each costumes require 2 1/4 yards of material. how many yards of material
Ipatiy [6.2K]
16 × 2.25= 36 yards of material
6 0
3 years ago
10% of what number is 78?
Zepler [3.9K]

Answer: x = 780

Step-by-step explanation: Well <u><em>percent</em></u> means <em>over 100</em> so we can set up an equation for this problem by reading it from left to right.

So we know that <u><em>10%</em></u> means <em>10/100</em>, <u><em>of</em></u> means times, <em><u>what</u></em> <em><u>number</u></em> means <em>x</em>, <u><em>is</em></u> means <em>equals</em>, and <em><u>12</u></em> means 12.

Notice that <em>10/100</em> can be reduced to 1/10.

So rewriting our problem we have <em>X/10 = 78</em>.

To get rid of the fraction, we multiply both sides of the equation by 10 and we have <em>x = 780</em>. So, 10% of 780 is 78.

Now let's check our answer back in the original problem to see if it makes sense.

We have <em>10% of 780 is 78</em>. Well we know that 100% of of 780 would be 780 so 10% of 780 should be alot less than 780 so 78 seems to make sense.

Image provided showing my work.

5 0
3 years ago
Read 2 more answers
Can you please help me out? ;-;
JulsSmile [24]

Answer:

3^2+2^2=13

\sqrt{13}

= 3.60555

Step-by-step explanation:

prove me wrong

3 0
3 years ago
What are these i don't get it?
OLEGan [10]

Answer:

Triangles

Step-by-step explanation:

Hope this helps, mark brainliest if u can :)

3 0
3 years ago
What is the recursive rule for this given sequence?
marin [14]

Answer:

C

Step-by-step explanation:

I'm going to assume that when you write a period you mean *

A recursive rule is pretty much asking "how do i get a specific number in the sequence"

we can see that each time we mulitply by 3 which means that to get say the 3rd number we would take the 2nd and mulitply it by 3

which means we can write

f(n-1)*3

which is C

4 0
3 years ago
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