3 years ago

Hii help me pls this math test is so hard

Mathematics

1 answer:

DanielleElmas [232]3 years ago

8 0

The last 2 options I belive

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How do you do this question?

polet [3.4K]

Answer:

Step-by-step explanation:

1 / ((n + 1) + 2)³ ≤ 0.001

1 / (n + 3)³ ≤ 0.001

(n + 3)³ ≥ 1000

n + 3 ≥ 10

n ≥ 7

6 0

3 years ago

Consider the random variables X and Y with joint density function ???? f(x,y)= x+y, 0≤x≤1;0≤y≤1 0, elsewhere. (a) Find the margi

sp2606 [1]

a. The marginal densities

$f_X(x)=\displaystyle\int_0^1(x+y)\,\mathrm dy=x+\frac12$

and

$f_Y(y)=\displaystyle\int_0^1(x+y)\,\mathrm dx=y+\frac12$

b. This can be obtained by integrating the joint density over [0.25, 1] x [0.5, 1]:

$P(X>0.25,Y>0.5)=\displaystyle\int_{1/4}^1\int_{1/2}^1(x+y)\,\mathrm dx\,\mathrm dy=\frac{33}{64}$

7 0

3 years ago

By road, without any stopovers, it would take Saad 14 hours and 27 minutes to reach Islamabad from Karachi. He leaves Karachi at

Furkat [3]

Answer:

8:48 p.m.

Step-by-step explanation:

First order half an hour plus 19 minutes used to refuel you will get 49 minutes then add it to the 14 hours 27 minutes you get dinner was 16 minutes then added to the time when he leaves Karachi which is 5:34 am which you get 8:48 p.m.

4 0

3 years ago

You are building a model of a square pyramid. The side length of the base of the model is 30 cm. The height is 21 cm. What is th

Shalnov [3]

Answer:

Step-by-step explanation:

find the area of the base (square)=900 sq. cm
find area of triangles=1260 sq. cm
total= 2160 sq. cm

6 0

3 years ago

Help idk how to do this

arsen [322]

Answer:

Look it up on google, you might find that there. that stuff is hard

Step-by-step explanation:

6 0

3 years ago