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hodyreva [135]
1 year ago
15

Suppose that Andrea told you that “Blake and I started out with the same number of marbles, but I gave him one of mine. Now Blak

e has one more marble than me.” Is Andrea’s reasoning incorrect? If so, how can you help Andrea identify her misunderstanding?
Mathematics
1 answer:
garri49 [273]1 year ago
6 0

Step-by-step explanation:

i know this but i don't have time now

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What is the equationof the line that passes through (0,3) and (7,0)
bekas [8.4K]
Answer:

y = - 3/7x + 3

Step-by-step explanation:

First find the slope

Second find the y-intercept (already given by one of the points)

Third write it in slope-intercept form
6 0
2 years ago
How to do this ?<br> Don’t understand it
riadik2000 [5.3K]
X=y+3
<span>-5x-4y=<span>30
-------------------
Substitute y + 3 for x in </span></span>-5x-4y=30
<span><span>-5<span>(y+3)-</span></span>4y</span>=<span>30
</span>-9y-15=<span>30
</span>----------------------------
Add 15 to each side
<span><span>-9y-15</span>+15</span>=<span>30+<span>15
-9y = 45
</span></span>-----------------------------------
Divide each side by -9
-9y ÷ -9 = 45 ÷ -9
y = -5
Now we solve for x
====================================================================
Substitute -5 for y in x = y + 3
x=-<span><span>5</span>+<span>3
</span></span>x = -2
----------------------
(-2,-5) is your answer


7 0
3 years ago
(will give brainliest!!)
Alex73 [517]
Hey there!

To figure out what "x" means, you can divide the numbers 126 and 14  . . .

126 divided by 14 = 9

9 x 14 = 126

9 = x

----------------
x = 9
----------------

Hope this helps you.
Have a great day!
4 0
3 years ago
Read 2 more answers
One side of a triangle is 3 times the second side. The third side is 17 feet longer than the second side. The perimeter of a
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Answer:

Step-by-step explanation:

lets have one side =a

P=3a+a+(17+a)=52

P=5a+17=52

5a=52-17

5a=35

a=7

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3 0
3 years ago
A line is a defined term in geometry.<br> True<br> False
alexandr402 [8]

Answer:

true

Step-by-step explanation:

7 0
3 years ago
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