2 years ago

Find the roots of the equation below. 7x^2 + 1 = 0

1 answer:

7 0

I have no clue how to solve this myself but i would recommend using photomath for tricky equations because it gives you a step by step tutorial for the problem

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What is the inverse one to one function of f(x) = square root of x-2???

alexira [117]

$f(x) = \sqrt{x - 2} \\y = \sqrt{x - 2} \\y^{2} = (\sqrt{x - 2})^{2} \\y^{2} = x - 2 \\x^{2} = y - 2 \\x^{2} + 2 = y \\x^{2} + 2 = f^{-1}(x)$

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2 years ago

I need help with number 3

olya-2409 [2.1K]

Answer: He would earn $14

Step-by-step explanation: Since Sam had 11 games but only 9 of them were working just take 11 - 9 which = 2 then take 7 x 2 to get $14

Hope this helps

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3 years ago

Read 2 more answers

Express 45000 in scientific notation

Ne4ueva [31]

4.5 x 10 to the power of 4

7 0

3 years ago

At the start of 2014, tim house was worth £100,000 the value of the house increases by 10%per every year work out the value of h

kotykmax [81]

Answer:

$146410

Step-by-step explanation:

The formula for calculating future value:

FV = P (1 + r)^n

FV = Future value

P = Present value

R = interest rate

N = number of years

100,000 x (1.1)^4 = $146410

4 0

2 years ago

Find the non-permissible replacement for: 4/5x

Alik [6]

Hello :
answer <span>B) 0
because : 4/(5×0) no exist</span>

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2 years ago