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3 years ago

Heyyyy have a good day! :)

Mathematics

1 answer:

inn [45]3 years ago

7 0

Answer:

I've learned that I can always learn more.

Step-by-step explanation:

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A freight train travels 44 feet in 1 second. at this rate, how many miles will the train travel in 1 hour?

Liula [17]

The answer is 30 miles per hour.

ft/s -> mphmph = ft/s 1.466667mph = 44 divided by 1.466667mph = 30.00000
Hope this helps, please mark brainliest!

6 0

3 years ago

Read 2 more answers

Pleaseee helppp!!!!!

lana [24]

Answer:

x - 9

Step-by-step explanation:

(f ÷ g)(x) = f(x) ÷ g(x), that is

$\frac{x^2-19x+90}{x-10}$ ← factorise the numerator

= $\frac{(x-10)(x-9)}{x-10}$ ← cancel the common factor (x - 10) on numerator/denominator

= x - 9

8 0

3 years ago

Find f such that the given conditions are satisfiedf’(x)=x-4, f(2)=-1

kicyunya [14]

Given:

$f^{\prime}\left(x\right)=x-4,\text{ and}f\left(2\right)=-1$

To find:

The correct function.

Explanation:

Let us consider the function given in option D.

$f(x)=\frac{x^2}{2}-4x+5$

Differentiating with respect to x we get,

$\begin{gathered} f^{\prime}(x)=\frac{2x}{2}-4 \\ f^{\prime}(x)=x-4 \end{gathered}$

Substituting x = 2 in the function f(x), we get

$\begin{gathered} f(2)=\frac{2^2}{2}-4(2)+5 \\ =2-8+5 \\ =-6+5 \\ f(2)=-1 \end{gathered}$

Therefore, the given conditions are satisfied.

So, the function is,

$f(x)=\frac{x^{2}}{2}-4x+5$

Final answer: Option D

6 0

2 years ago

Simplify the expression 200y+30+110-75y×2+y

vichka [17]

The answer would be 51y+140

4 0

3 years ago

Solve for x. x^2+2=102 there are two solutions for x

horrorfan [7]

Well one is def 10 but im not sure what the other one is

8 0

3 years ago

Read 2 more answers