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3 years ago

How would you do this question?

Mathematics

1 answer:

diamong [38]3 years ago

8 0

Answer:

1) ∫ x² e^(x) dx

4) ∫ x cos(x) dx

Step-by-step explanation:

To solve this problem, eliminate the choices that can be solved by substitution.

In the second problem, we can say u = x², and du = 2x dx.

∫ x cos(x²) dx = ∫ ½ cos(u) du

In the third problem, we can say u = x², and du = 2x dx.

∫ x e^(x²) dx = ∫ ½ e^(u) du

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Three cards—one red, one green, and one blue—are to be arranged in a stack. Using R for red, G for green, and B for blue, make a

Lelu [443]

Answer:

RGB. RBG, BRG, BGR, GBR, GRB

Step-by-step explanation:

Given

R, G and B

Required

List all possible arrangement

First, we need to calculate the number of arrangement

There are 3 letters and they are to be arranged in order of 3.

So, we have:

$n = 3$ and $r =3$

Number of arrangement is:

$^nP_r = \frac{n!}{(n - r)!}$

$^3P_3 = \frac{3!}{(3 - 3)!}$

$^3P_3 = \frac{3!}{0!}$

$^3P_3 = \frac{3*2*1}{1}$

$^3P_3 = \frac{6}{1}$

$^3P_3 = 6$

Hence, number of arrangements is 6 and the arrangements are:

RGB. RBG, BRG, BGR, GBR, GRB

7 0

2 years ago

What’s the answer to this

liraira [26]

Answer:

idk what's the answer to this... so what's the question?

4 0

3 years ago

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Joseph accepted a new job at a company with a contract guaranteeing annual raises. Joseph will get a raise of $5000 every year a

daser333 [38]

Answer:

70000 + 5000nn = n

Step-by-step explanation:

70000 + 5000nn = n

8 0

3 years ago

A line has a slope of -2 and passes through the point (3, 1). What is the equation of this line in slope-intercept form?

Zepler [3.9K]

Question 7. y = -2x + 7. y = mx + b; m= slope (-2) (3, 1) resolve for y. you have : 1= -2 (3) + b; 1 = -6 + b; 1 + 6 = b; b = 7.

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3 years ago

Over the first five years of owning her car, Gina drove about 12,200 miles the first year, 16,211 miles the second year, 12,050

weeeeeb [17]

(12,200 + 16,211 + 12,050 + 11,350 + 13,325) / 5 = 65136/5 =
13027.2 <== this is the mean (average)

11,350 , 12,050 , 12,200 , 13,325, 16,211
median (middle number) = 12,200

there is no mode...a mode is a number that appears most often...all the numbers appear once in this data.

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3 years ago

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