2 years ago

Let f(x)=5x+5 find f(-1)I need your help with this. please help me

Mathematics

1 answer:

Alisiya [41]2 years ago

5 0

$f(x) = 5x+5\\\\f(-1) = 5(-1) +5 = -5+5=0$

You might be interested in

a motorboat travels 456 km in 8 hours going upstream and 783 km in 9 hours going downstream. what is the rate of the boat in sti

Galina-37 [17]

$\begin{gathered} \text{Let;s assume the sp}e\text{d of boat in still water is x.} \\ And\text{ the spe}ed\text{ of stream is y.} \\ For\text{ upstream,} \\ (x-y)\times8=456 \\ x-y=57\ldots(1)_{} \\ (x+y)\times9=783 \\ x+y=87 \\ x=87-y\ldots(2) \\ \text{Now, substitute the value of x in the equation (1).} \\ 87-y-y=57 \\ -2y=57-87 \\ 2y=30 \\ y=15\text{ km/hours (rate of current)} \\ \text{Substitute the value of y in the equation (2).} \\ x=87-15 \\ x=72\text{ km/hours (boat in still water)} \end{gathered}$

4 0

1 year ago

Which graph shows a linear relationship?

galina1969 [7]

Letter A is the correct one

3 0

3 years ago

Solve For x.<br> (-4x+5)-(6x+7)=0<br><br> (Pls Explain Your Answer in Simple Terms)

Alchen [17]

Answer:

$- 4x + 5 - (6x + 7) = 0\\ - 4x + 5 - 6x - 7 = 0 \\ - 10x - 2 = 0 \\ 10x + 2 = 0 \\ 10x = - 2 \\ x = \frac{ - 2}{10} \\ x = - .2 \\ thank \: you$