Answer:
x = -1/2
Step-by-step explanation:
We are given:
Subtract 1 on both sides:
Then, multiply 3 on both sides:
Finally, divide 4 on both sides:
Answer:
1320
Step-by-step explanation:
There are three "spots" for balls.
__ __ __
For the first "spot," and without replacement, meaning we don't put the balls back, there are 12 choices.
12 __ __
But for the next spot, there are only 11 choices. And for the next, there are only 10!
12 11 10
Since these are independent events, we multiply them together.
12 x 11 x 10 = 1320
There are 1320 possibilities!
How could we do it on the calculator, much faster? The question says "in order," so we know it's a <em>permutation,</em> not a <em>combination.</em> This is the nPr button on the calculator (math -> prb -> 2). Just type in 12 nPr 3 and you get the same answer, 1320.
Side of a square = 4n
Side of the smaller square = 4n÷2 = 2n
Perimeter of one smaller square = 2n x 4 = 8n
Perimeter of 20 smaller squares = 8n x 20 = 160n
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Answer: Perimeter of all the 20 smaller squares = 160n
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To find the area of a circle.
We first need the radius.
This is quite simple, the radius is half of the diameter
Knowing the diameter is 14
14 divided by 2 = 7.
Now for a circle here is the equation
A = Area
A = <span>π r ^2
</span>
So we have the radius being 7 but now it needs to be squared.
7 x 7 = 49.
So now our equation is.
A = <span>π 49 ^2 (Keep in mind ^2 is just squared)
</span>
Now this is the answer but we can get more technical by multiplying 49 times <span>π
</span>
Now <span>π equals roughly 3.14
</span>
So we can do 49 x 3.14 cm
Which this equals 153.86
Which rounding to the nearest tenth gets you:
153.9 cm is your area
I really do hope this helps!
Brainliest is always appreciated if you feel its deserved!
P.S. If you still struggle with this here is a link that helped me out a lot with this subject when i was learning it :))
https://www.khanacademy.org/math/basic-geo/basic-geo-area-and-perimeter/area-circumference-circle/v/...
Answer:
y =(t-r)/s
Step-by-step explanation:
r + sy = t
Subtract r from both the sides,
sy = t - r
Divide both the sides by s,
y = (t - r) / s
