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kirza4 [7]
2 years ago
11

!!20 POINTS AND BRAINLIEST!!!

Mathematics
1 answer:
zheka24 [161]2 years ago
4 0

\text{Given that,}\\\\y=f(x) = x^3 -5\\\\\text{Replace x with y and solve for y.}\\ \\~~~~~x = y^3 -5\\\\\implies y^3 =x+5\\\\\implies y = \displaystyle \sqrt[3]{x+5}\\\\\implies f^{-1}(x) =\displaystyle \sqrt[3]{x+5}

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Hello please help with my question, I will give brainlyest!
lilavasa [31]

No, John is incorrect.

<h3>Correct work shown:</h3>

\sf x^2 - 6x - 7 = 0

\sf x^2 - 6x = 7

\sf x^2 - 6x  + 9= 7 + 9

\sf (x-3)^2= 16

\sf x-3=\pm \sqrt{16}

\sf x-3= \pm 4

\sf x= + 4 + 3 \quad or \quad x = -4 + 3

\sf x= 7 \quad or \quad x = -1

The correct answer should be x = 7 or x = -1

3 0
2 years ago
A triangle has a base of 4/5 of a yard and a height of 2/3 of a yard. What is the area of this triangle?
Elena-2011 [213]

Answer:

8/15

Step-by-step explanation:

4/5 times 2/3

4 0
3 years ago
Write 180 feet per 12 seconds as a unit rate
Ber [7]
15ft per sec would be the unit rate.
7 0
4 years ago
Ella’s test grades in her history class are 89, 94, 82, 84, and 98. What score must Ella make on her next test to have a mean te
Stells [14]

Answer:

the answer is 93

Step-by-step explanation:

mean of x,y,z

x+y+z

3 terms

(x+y+z)/3=mean

so

represent next test score as x

89+94+82+84+98+x

count how many terms ther are (6 terms)

mean is 90

(89+94+82+84+98+x)/6=90

add the like terms

(447+x)/6=90

multiply both sides by 6 to clear fraction

447+x=540

subtract 447 from both sides

x=93

4 0
2 years ago
Find the sum or difference 7/8 + 9/16
zavuch27 [327]

Answer:

The answer is 23/16 but if you want it to be a mixed number, it is 1 7/16.

Step-by-step explanation:

6 0
2 years ago
Read 2 more answers
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