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3 years ago

If one earthquake has a magnitude of 5 on the Richter scale and a second earthquake has a magnitude of 6,

Mathematics

1 answer:

sammy [17]3 years ago

5 0

Answer:

sister and brother

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What is the distance between P(12, 4) and Q(-8, 2)

abruzzese [7]

$\huge{\boxed{2 \sqrt{101}}}$

The distance formula is $\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}$ , where $(x_1, y_1)$ and $(x_2, y_2)$ are the points.

Substitute in the points. $\sqrt{(2-4)^2+(-8-12)^2}$

Subtract. $\sqrt{(-2)^2+(-20)^2}$

Solve the exponents. $\sqrt{4+400}$

Add. $\sqrt{404}$

Now, we can simplify this square root just a little bit. $404$ has a square factor of $4$ . $\sqrt{404}=\sqrt{4}*\sqrt{101}$

The square root of $4$ equals $2$ . $\boxed{2 \sqrt{101}}$

6 0

3 years ago

Read 2 more answers

Rational Numbers lbrainlyst if I get a B or more in 20 mins!!

Gnoma [55]

Answer:

1.) -5.1

2.) personally I would not convert the way the would. There is a quicker way of converting that to decimal so idk exactly what they are doing unfortunately I can't help with you at the moment. I would need more time.

3.) Point C is the the opposite of -3.3

4.) D. 5.3333333 is a rational number

5.) All the points on the graph could represent rational numbers

6.) Simply Divide 2 by 6 to get repeating decimal

7.) -20.75 should be correct

Step-by-step explanation:

6 0

2 years ago

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How do you do this question?

mihalych1998 [28]

Answer:

C) π/6

Step-by-step explanation:

The area under the curve from x=-π/2 to x=k is 3 times the area under the curve from x=k to x=π/2.

$\int\limits^k_{-\frac{\pi }{2}} {cos\ x} \, dx = 3\int\limits^{\frac{\pi }{2}}_k {cos\ x} \, dx\\sin\ x\ |^{k}_{-\frac{\pi }{2}} = 3\ sin\ x\ |^{\frac{\pi }{2}}_k\\(sin\ k - (-1)) = 3\ (1 - sin\ k)\\sin\ k + 1 = 3 - 3\ sin\ k\\4\ sin\ k = 2\\sin\ k = \frac{1}{2}\\k = \frac{\pi}{6}$