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ollegr [7]
3 years ago
15

Can I get help with this please

Mathematics
1 answer:
S_A_V [24]3 years ago
3 0

Answer:

Step-by-step explanation:

you want to multiply y by 2  or divide by 1/2  

? = 1/2  in this problem

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What is the arclength of PQ
balu736 [363]

Given:

θ = 54°

Radius = 10 in

To find:

The arc length of PQ

Solution:

Arc length formula:

$\text{Arc length}=2 \pi r\left(\frac{\theta}{360^\circ}\right)

$\text{Arc length}=2 \times 3.14 \times 10\left(\frac{54^\circ}{360^\circ}\right)

                 = 9.42 in

The arc length of PQ is 9.42 inches.

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3 years ago
Use the empirical rule to find a reasonable estimate for P(z ≤ 0.82).
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The answer is 80%..................
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Consider the vectors Bold uuequals=left angle 4 comma 0 right angle4,0 and Bold vvequals=left angle negative 3 comma negative 3
saw5 [17]

Answer:

Angle between the two vectors is 135°

u•v = -12

Step-by-step explanation:

Given two vectors u = (4,0) and v = (-3,-3).

To find the angle between the two vectors we will use the formula for calculating the angle between two vectors as shown;

u•v = |u||v|cos theta

cos theta = u•v/|u||v|

theta = arccos  (u•v/|u||v|)

u•v = (4,0)•(-3,-3)

u•v = 4(-3)+0(-3)

u•v = -12

For |u| and |v|

|u| = √4²+0²

|u| = √16 = 4

|v| = √(-3)²+(-3)²

|v| = √9+9

|v| = √18

|v| = 3√2

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theta = arccos(-12/12√2)

theta = arccos(- 1/√2)

theta = -45°

Since cos is negative in the second quadrant, theta = 180-45°

theta = 135°

To get u•v using the formula u•v = |u||v|cos theta

Given |u||v| = 12√2 and theta = 135°

u•v = 12√2cos 135°

u•v = 12√2× -1/√2

u•v = -12√2/√2

u•v = -12

For the diagram of the vectors, find it in the attachment below.

4 0
3 years ago
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Two squares are ALWAYS similar true or false
Drupady [299]

Answer:

it is absolutely true:)

hope this helps

8 0
3 years ago
Helpppp what is kp???
Ludmilka [50]

Step-by-step explanation:

the equilibrium constant expressed in terms of partial pressures. Kp index, a measure of the global average geomagnetic potential. Kripke–Platek set theory, a mathematical axiom system.

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