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Elza [17]
3 years ago
6

My mother pays my brother twice as much allowance as she pays me because he cleans the bathrooms. Together we get $24 each week.

How much is my brother’s allowance each week?
Mathematics
1 answer:
Harman [31]3 years ago
4 0

Answer:

Your brother gets $16 and you get $8.

Step-by-step explanation:

first of all what is 16+8=24

first step..i started from 2 and did twice of that wich is 4 but that only got $6

second step.... just keep doing your multiples....

third step....as soon as i got to the number 8 i did twice of that and i got 16 then i added those and i got $24

and that is your answer.

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What is the differentiation of f(x) =2x^4/5?
motikmotik
\bf f(x)=\cfrac{2x^4}{5}\implies f(x)=\cfrac{2}{5}x^4\implies \cfrac{df}{dx}=\cfrac{2}{5}\cdot 4x^3\implies \cfrac{df}{dx}=\cfrac{8x^3}{5}

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3 years ago
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Find the set of values of k for which the line y=kx-4 intersects the curve y=x²-2x at 2 distinct points?
Sonbull [250]

Answer:

-6 < k < 2

Step-by-step explanation:

Given

y = x^2 - 2x

y =kx -4

Required

Possible values of k

The general quadratic equation is:

ax^2 + bx + c = 0

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y - y = x^2 - 2x - kx +4

0 = x^2 - 2x - kx +4

Factorize:

0 = x^2 +x(-2 - k) +4

Rewrite as:

x^2 +x(-2 - k) +4=0

Compare the above equation to: ax^2 + bx + c = 0

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4 +4k+k^2-16>0

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k^2 + 4k - 16 + 4 >0

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k > 2 or k > -6

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k < 2 or k >-6

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-6 < k < 2

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3 years ago
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Answer:

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