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2 years ago

I need an explanation on how to work this out

Mathematics

1 answer:

Cerrena [4.2K]2 years ago

6 0

Answer:

Step-by-step explanation:

We have to substitute r and s with the values given:

Now we can make an equation with our new values:

(6×1/4)+(14×1/4)

Now we do one bracket at a time (I put brackets to show that you need to do them separately, you don't need to have brackets)

1.5+3.5=5

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masya89 [10]

Distance=speed times time
distance/time=speed

distance=538
time=9 and 15mins
60mins=1hr
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time=9.25hr

distance/time=538/9.25=58.162mph
about 58mph

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2 years ago

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Misha Larkins [42]

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Step-by-step explanation:

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3 years ago

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3 years ago

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Which of these numbers is a square number 4x10^5 9x10^4 4x10^3 9x10^3

bazaltina [42]

Answer:

 here 9*10^4 is a square number 

Step-by-step explanation:

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3 years ago

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yanalaym [24]

Answer:

$\frac{f(x+h)-f(x)}{h}$ $=2x + h$

Step-by-step explanation:

Given

$f(x)= x^2 + 2$

Required

Determine: $\frac{f(x+h)-f(x)}{h}$

First, we calculate f(x + h)

$f(x)= x^2 + 2$

$f(x+h) = (x+h)^2+2$

$f(x+h) = x^2+2xh+h^2+2$

So, we have:

$\frac{f(x+h)-f(x)}{h}$ $= \frac{x^2 + 2xh + h^2 + 2 - x^2 - 2}{h}$

$\frac{f(x+h)-f(x)}{h}$ $= \frac{x^2 - x^2+ 2xh + h^2 + 2 - 2}{h}$

$\frac{f(x+h)-f(x)}{h}$ $= \frac{2xh + h^2}{h}$

$\frac{f(x+h)-f(x)}{h}$ $=2x + h$

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2 years ago