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Zinaida [17]
3 years ago
10

Given the formula:

" title="x = \frac{1 + a}{1 - a} " alt="x = \frac{1 + a}{1 - a} " align="absmiddle" class="latex-formula">
Solve for "a" when x=12.​
Mathematics
1 answer:
shtirl [24]3 years ago
8 0

12 = \frac{1+a}{1-a} => 12(1-a)= 1+ a \\=> 12 -12a = 1 + a => 12a+1 = 12-1 \\=> 13a = 11 => a= \frac{11}{13}

ok done. Thank to me :>

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Find the slope y=mx+b form and midpoint of (3,-5) (8,10)
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8 0
3 years ago
Write a subtraction sentence using integers. Then, write the equivalent addition sentence and explain how to find the sum
galben [10]
In integers subtraction and addition are almost same ....

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<span> if both are same ..i.e if both are either positive(+) or negative(-) then you add(or find the sum) and put the common sign ... For eg :+5+10 = +15 and (-5) + (-10) = (-5)]

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u can ask if you have any doubt ....
Hope it helps !!!








</span>
5 0
3 years ago
Somebody help #9 geometry
IrinaK [193]

Answer:

41.1units^2

Step-by-step explanation:

A=\frac{h_{b}b }{2} \\=\frac{8*4}{2} \\=16units^2(triangle)

A=\frac{\pi r^2}{2}\\\frac{\pi 4^2}{2}\\=25.13units^2(semicircle)

Add both together

16+25.13\\=41.13units^2

4 0
3 years ago
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