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2 years ago

How do you solve 18 - (-2)=

Mathematics

1 answer:

salantis [7]2 years ago

3 0

Answer:

the answer would be 20

Step-by-step explanation:

so if 18-(-2)=?

two nwgatives make a positive. So the equation would turn into 18+2=20

Im not 100% if this is right but htis is how I was taught to do it.

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Radius of a circular ground is 21m. Find.

trapecia [35]

The circumference of a circle of radius $r$ is

$C=2\pi r$

So, in your case, the circumference is

$C=2\cdot \pi \cdot 21 = 42\pi$

The circumference is actually the length of the "perimeter", so the answer to questions 1 and 2 looks the same actually

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2 years ago

7x10^7 in standard form

Nikolay [14]

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2 years ago

What is 6.16×106 in standard form?

zhannawk [14.2K]

<span>6.16×10^6

10^6 = </span>10000006.16 x 1000000 = <span>6160000

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</span>
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3 years ago

Read 2 more answers

If sin(0) = 0.788 , then what is the approximate value of csc(0) ?

almond37 [142]

Answer:

Step-by-step explanation:

$\csc \: x = \frac{1}{ \sin \: x } \\ \csc(0) = \frac{1}{ \sin(0) } \\ if \: \sin(0) = 0.788 \: so \\ \csc(0) = \frac{1}{0.788} \\ \\ \csc(0) = 1.27$

Thanks for this question :)

7 0

2 years ago

Sinx+(75độ)=sin 15 độ

SOVA2 [1]

Step-by-step explanation:

Did you mean :

sin(x + 75°) = sin(15°)

x + 75° = 15°

x = 15° - 75°

x = -60°

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2 years ago