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3 years ago

I need help with a MathsWatch question!

Mathematics

2 answers:

KIM [24]3 years ago

6 0

To find the area of a circle, you do π × diameter (in this case 10). They have told you to use 3.142 as π, so you do 3.142 × 10 = 31.42. Because it's a semi-circle, you need to halve 31.42 to get 16.21, which is the answer

yuradex [85]3 years ago

6 0

A = $\pi$ x r²
A = 3.142 x 5²
A = 9818.75

Semicircle
9818.75 / 2 = 4909.38

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What is the slope of the line that passes through the pair of point? (5, 7), (2, 1)

choli [55]

The slope of the line that passes through the pair of point (5, 7), (2, 1) is 2

Solution:

Given that line that passes through the pair of point (5, 7), (2, 1)

To find: slope of the line

The slope of line is given as:

For a line passing through two points $(x_1, y_1)$ and $(x_2, y_2)$ slope is given as:

$m=\frac{y_{2}-y_{1}}{x_{2}-x_{1}}$

Here in this problem,

$\left(x_{1}, y_{1}\right)=(5,7) \text { and }\left(x_{2}, y_{2}\right)=(2,1)$

Substituting the values in above formula,

$m=\frac{1-7}{2-5}=\frac{-6}{-3}=2$

Thus the slope of given line is 2

4 0

3 years ago

Lim ln(tan x) as tends to pi/2 from the left

ioda

Let $x=\arctan y$ . Then $\tan x=y$ , and so as $x\to\dfrac\pi2^-$ , you have $y\to+\infty$ . The limit is then equivalent to

$\displaystyle\lim_{x\to\frac\pi2^-}\ln(\tan x)=\lim_{y\to\infty}\ln y=\infty$

3 0

3 years ago

What are 100.000 digits of pi

Blababa [14]

Answer:

3.14159265359.

Step-by-step explanation:

I just learned about this

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7 0

3 years ago

Read 2 more answers

If you add the digits in a two-digit number and multiply the sum by 7, you get the original number. If you reverse the digits in

kolbaska11 [484]

The answer is A. 42

Solution:
Let x= ones digit, y=tens digit

1st condition (original number) : 7(x+y)=10y + x
2nd condition (new number by reversing the digits): 18+x+y=10x+y

simplifying:
1st condition: 6x=3y
2nd condition: x=2
substituting x=2 to 6x=3y
y=4

3 0

3 years ago

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What is the answer to this question?

SOVA2 [1]

Answer:

the answer is option 3rd

5 0

3 years ago