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3 years ago

Lll give points and brainalist for correct answer / explanation

Mathematics

1 answer:

BARSIC [14]3 years ago

5 0

Answer:

Step-by-step explanation:

A. false; the diameter of a circle is double the radius

B. false; the diameter of a circle is double the radius

C. false; the diameter of a circle is double the radius

D. true! The diameter is double the radius

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Find the sum of 3b/b 2 and 12/b 2 and express it in simplest form

alexandr1967 [171]

$\frac{3b}{b^{2}} + \frac{12}{b^{2}} = \frac{3b + 12}{b^{2}} = \frac{3(b) + 3(4)}{b^{2}} = \frac{3(b + 4)}{b^{2}}$

8 0

3 years ago

A pendulum is 45 cm long. When it swings, it travels along the arc of a circle and covers a distance of 27.5 cm. Calculate the a

11Alexandr11 [23.1K]

Answer: The angle through which the pendulum travels = $35^{\circ}$ .

Step-by-step explanation:

Formula: Length of arc: $l= r\theta$ , where r= radius ( in radians) , $\theta$ = central angle.

Given: Length of pendulum (radius) = 45 cm

Length of arc= 27.5 cm

Put these values in the formula, we get

$27.5=45\theta\\\\\Rightarrow\theta=\dfrac{27.5}{45}=\dfrac{275}{450}\\\\\Rightarrow\ \theta=\dfrac{11}{18}\text{ radians}$

In degrees ,

$\theta=\dfrac{11}{18}\times\dfrac{180}{\pi}=\dfrac{110\times7}{22} \ \ \ \ [\pi=\dfrac{22}{7}]$

$\theta=35^{\circ}$

Hence, the angle through which the pendulum travels = $35^{\circ}$ .

4 0

3 years ago

6. What are the coordinates of W? (0,t) W 0 (,0) Rhombus (0, -1) o (-r, o) (0,r). (t,0)

Svetradugi [14.3K]

Answer:

B. (-r, 0)

Step-by-step explanation:

W is on the x axis, so the y coordinate is 0.

It is also r away from the origin, so the x coordinate is -r

Hope this helps!

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3 years ago

Click the pair of numbers that is relatively prime.

7nadin3 [17]

I believe the answer is D. 25 and 27

Hope this helps :)

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3 years ago

Compare the functions. f(x)=10x g(x)=5^x h(x)=4x^2+5x select the true statement

antiseptic1488 [7]

Answer:

equals 56

Step-by-step explanation:

7 0

2 years ago

Read 2 more answers