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3 years ago

Help pleaseeeeeeeeeee !

Mathematics

2 answers:

umka2103 [35]3 years ago

8 0

Answer: acute 90-

Step-by-step explanation:

DochEvi [55]3 years ago

7 0

Answer: 21.9

Step-by-step explanation:

tan-1(4 / 10)

I hope im right

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Surface area is the sum of the areas of all the surfaces of a three-dimensional object.

Dmitry [639]

Answer: True

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3 years ago

What is the measure of angle 3?

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Answer:

c.45 degrees

Step-by-step explanation:

90 -180= 90

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3 years ago

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3 years ago

1/4 and 5/12 with common denominator

Zigmanuir [339]

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Step-by-step explanation:

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2 years ago

R= m/2 (c + K) for k

Wewaii [24]

Answer:

$\bold{K=\frac{2r}m-c=\frac{2r-cm}m}$

Step-by-step explanation:

$\bold{r= \frac m2 (c + K)}\\^{\div\frac m2}\qquad^{\div\frac m2}\\ \bold{r\cdot\frac2m=c+K}\\{}\ ^{-c}\qquad^{-c}\\\bold{\frac{2r}m-c=K}$

Or if you mean r= m/[2(c + K)]

$\bold{\quad r\ =\ \frac m{ 2(c + K)}}\\^{\cdot(c+K)}\quad^{\cdot(c+K)}\\ \bold{r(c+K)=\frac m2}\\{}\qquad ^{\div r}\qquad^{\div r}\\\bold{c+K=\frac m2\cdot\frac1r}\\{}\quad^{-c}\qquad^{-c}\\\bold{K=\frac m{2r}-c}$

5 0

3 years ago