HELP ME PLEASE IT IS DUE TODAY I DON'T UNDERSTAND ANY OF THIS

Mathematics

2 answers:

natulia [17]3 years ago

4 0

I really hate math wish teachers would give us a break

Kryger [21]3 years ago

3 0

Answer:

first pic: A and C

second pic: i dont know for A, B = w + 1.4, C = 3y = 5.1, D = z + 1/3 = 1/2

third pic: a. 2x = 14.62 b. there are 2 x's on one side, and 1 number on the other, which can be taken as the answer to 2x. if we can do 2x = 14.62, we can do 14.62 divided by 2 to get the other number x, 14.62 divided by 2 = 7.31. c. i don't know

after this

Step-by-step explanation:

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Could i get some help 14m+2n-5(m-4n)-6n

frosja888 [35]

Answer:

9m + 16n

Step-by-step explanation:

14m+2n-5m+20m-6n

9m+2n+20n-6n

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9m + 16n

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3 years ago

4x2 + 4x - 1, evaluate and fully simplify each of the - For the function f(0) following f(s + h) f(x + h) - f(5) h 10

Andrew [12]

Given the function f(x);

$f(x)=-4x^2+4x-1$

Evaluating the function f(x+h);

$\begin{gathered} f(x+h)=-4(x+h)^2+4(x+h)-1 \\ f(x+h)=-4(x^2+2xh+h^2)^{}+4(x+h)-1 \\ f(x+h)=-4x^2-4h^2-8xh^{}+4x+4h-1 \end{gathered}$

So;

$f(x+h)=-4x^2-4h^2-8xh^{}+4x+4h-1$

Evaluating the second function;

$\begin{gathered} \frac{f(x+h)-f(x)}{h}=\frac{-4x^2-4h^2-8xh^{}+4x+4h-1-(-4x^2+4x-1)}{h} \\ \frac{f(x+h)-f(x)}{h}=\frac{-4x^2-4h^2-8xh^{}+4x+4h-1+4x^2-4x+1}{h} \\ \frac{f(x+h)-f(x)}{h}=\frac{-4x^2+4x^2-4h^2-8xh^{}+4x-4x+4h-1+1}{h} \\ \frac{f(x+h)-f(x)}{h}=\frac{-4h^2-8xh^{}+4h}{h} \end{gathered}$

simplifying further;