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solong [7]
3 years ago
5

What’s the value of f(5)?

Mathematics
2 answers:
devlian [24]3 years ago
8 0

Answer:

f(5) = 25

Step-by-step explanation:

f(x) = 3x + 10

f(5) = 3(5) + 10

f(5) = 15 + 10

f(5) = 25

AnnZ [28]3 years ago
8 0

Answer:

f(5) = 25

Step-by-step explanation:

f(x) = 3x + 10

Let x = 5

f(5) = 3*5+10

      = 15+10

      = 25

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What is the inverse of y=-2x^5 + 10? Please show steps:)
Allushta [10]

Answer:

A (5 -1/2x )^ 1/5

Step-by-step explanation:

y=-2x^5 + 10

Exchange x and y

x=-2y^5 + 10

Solve for y

Subtract 10 from each side

x-10 = -2y^5

Divide by -2

x/-2 -10/-2 = -2/-2 y^5

-1/2x +5 =y^5

Take the 5th root on each side

(-1/2x +5)^ 1/5 = (y^5)^1/5

(-1/2x +5)^ 1/5 = y

7 0
3 years ago
Enter the unknown value in the equation.<br><br> 35.7−□=11.23
Elenna [48]

Answer:

24.47

Step-by-step explanation:

hope this helps! :)

5 0
3 years ago
Read 2 more answers
Get it right and ill paypal 25$ if ur fast
Lady bird [3.3K]

ight what do i gotta answer tho

6 0
3 years ago
Prove that if $w,z$ are complex numbers such that $|w|=|z|=1$ and $wz\ne -1$, then $\frac{w+z}{1+wz}$ is a real number.
mr_godi [17]

Answer:

See proof below

Step-by-step explanation:

Let r=\frac{w+z}{1+wz}. If w=-z, then r=0 and r is real. Suppose that w≠-z, that is, r≠0.

Remember this useful identity: if x is a complex number then x\bar{x}=|x|^2 where \bar{x} is the conjugate of x.

Now, using the properties of the conjugate (the conjugate of the sum(product) of two numbers is the sum(product) of the conjugates):

\frac{r}{\bar{r}}=\frac{w+z}{1+wz} \left(\frac{1+\bar{w}\bar{z}}{\bar{w}+\bar{z}}{\right)

=\frac{(w+z)(1+\bar{w}\bar{z})}{(1+wz)(\bar{w}+\bar{z})}=\frac{w+z+w\bar{w}\bar{z}+z\bar{z}\bar{w}}{\bar{w}+\bar{z}+\bar{w}wz+\bar{z}zw}=\frac{w+z+w+|w|^2\bar{z}+|z|^2\bar{w}}{\bar{w}+\bar{z}+|w|^2z+|z|^2w}=\frac{w+z+\bar{z}+\bar{w}}{\bar{w}+\bar{z}+z+w}=1

Thus \frac{r}{\bar{r}}=1. From this, r=\bar{r}. A complex number is real if and only if it is equal to its conjugate, therefore r is real.

3 0
3 years ago
It says solve for x and round to the nearest hundredth. <br> 1. 9 over 6 equals x over 10
emmainna [20.7K]

Answer:

1.110

Step-by-step explanation:

I hope that help's

5 0
3 years ago
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