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IRINA_888 [86]
3 years ago
13

Can you guys please simplify the expressions?

Mathematics
1 answer:
Maksim231197 [3]3 years ago
5 0

Here is your answer :)

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What are the values of x for which the denominator is equal to zero for y= -x+4/xx+6X+8
Veseljchak [2.6K]

Answer:

-4 and -2

Step-by-step explanation:

(X+4)(x+2)

4×2=8

4+2=6

8 0
4 years ago
If 2(6 + 3x) + 1 = - 5 + 3(x - 1), what is the value of x?
Stels [109]

Answer: x = -7

Step-by-step explanation:

2(6 + 3x) + 1 = - 5 + 3(x - 1)

(2) (6) + (2) (3x) + 1 = -5 + (3) (x) + (3) (-1)

12 + 6x + 1 = - 5 + 3x + - 1

( 6x ) + ( 12 - 1 ) = ( 3x ) + ( -5 + -3 )

6x + 13 = 3x - 8

6x + 13 - 3x = 3x - 8 - 3x

3x + 13 = -8

3x + 13 - 13 = -8 - 13

3x = -21

3x/3 -21/3

X = -7

5 0
3 years ago
Read 2 more answers
Find the surface area of the part of the sphere x2+y2+z2=81 that lies above the cone z=x2+y2−−−−−−√
TiliK225 [7]
Parameterize the part of the sphere by

\mathbf s(u,v)=(9\cos u\sin v,9\sin u\sin v,9\cos v)

with 0\le u\le2\pi and 0\le v\le\dfrac\pi4. Then

\mathrm dS=\|\mathbf s_u\times\mathbf s_v\|=81\sin v\,\mathrm du\,\mathrm dv

So the area of S (the part of the sphere above the cone) is given by

\displaystyle\iint_S\mathrm dS=81\int_{v=0}^{v=\pi/4}\int_{u=0}^{u=2\pi}\sin v\,\mathrm du\,\mathrm dv=81(2\pi)\left(1-\dfrac1{\sqrt2}\right)=(162-81\sqrt2)\pi
4 0
4 years ago
Does anybody know what these type of problems are called please help
zavuch27 [327]
In the figure above, you are given the value of a start equal to 10 and the clover equal to 5. You are given a pole with three strings divided equally, the center string is tied to a wall and the two other strings carry either of the items. The first string has two stars and one clover which will have a total of 25 and the other string has one star and three clovers which will have a total of 25. The name of this type of problem is addition. Overall, the total weight of the items is 50.
4 0
3 years ago
Of all individual tax returns, 37 percent include errors made by the taxpayer. If IRS examiners are assigned randomly selected r
Dima020 [189]

Answer:

mean=4.44

standard deviation=1.67

Step-by-step explanation:

The mean and standard deviation for the number of erroneous returns per batch can be calculated using binomial distribution. The binomial distribution is used because

i) There are one of two possible outcomes( error or no error) that can be categorized into success and failure.

ii) The experiment is repeated fix number of times 12.

iii) The probability of success remains constant at each trial i.e. 37%

iv) The trails are independent.The mean and standard deviation of binomial distribution are np and √npq

Here, n=12, p=0.37 and q=1-0.37=0.63

mean=12*0.37=4.44

standard deviation=√12*0.37*0.63=√2.8=1.67

8 0
4 years ago
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