4 years ago

If k (x)=-7x+1 find the following K (0) K (-1) K (5)

Mathematics

1 answer:

torisob [31]4 years ago

5 0

K(x) means substitute whatever in the bracket into the function of k(x) juz like wht I did

You might be interested in

What is the solution to this equation? 4x+x-15+3-8=13

deff fn [24]

Answer:

x = 33/5

Step-by-step explanation:

4x+x-15+3-8=13

Combine like terms

5x -20 = 13

Add 20 to each side

5x-20+20 = 13+20

5x =33

Divide by 5

5x/5 = 33/5

x = 33/5

3 0

4 years ago

Write the equation of the line in slope-intercept form

NikAS [45]

Answer: Y = 7/8x+ 2.25

Step-by-step explanation:

you would subtract both y 7
subtract both x -8
y=7/8x+b
3= 7/8 x-2 +b
3 = 1.75 + b
-1.75 -1.75
2.25 = b

8 0

3 years ago

Which are the solutions of x2 = –7x – 8?

vovangra [49]

Answer:

The solutions are:

$x_1=\frac{-7+\sqrt{17}}{2}$ $x_2=\frac{-7-\sqrt{17}}{2}$

Step-by-step explanation:

We have the following quadratic equation

$x^2 = -7x - 8$

We can rewrite the equation as follows

$x^2+7x + 8=0$

Now we use the quadratic formula to solve the equation

For an equation of the form $ax ^ 2 + bx + c = 0$ the quadratic formula is:

$x=\frac{-b\±\sqrt{b^2-4ac}}{2a}$

In this case:

$a=1,\ b=7,\ c=8$

Then:

$x=\frac{-7\±\sqrt{7^2-4(1)(8)}}{2(1)}$

$x=\frac{-7\±\sqrt{49-32}}{2}$

$x=\frac{-7\±\sqrt{17}}{2}$

$x_1=\frac{-7+\sqrt{17}}{2}$

$x_2=\frac{-7-\sqrt{17}}{2}$

7 0

3 years ago

Read 2 more answers

-16 + x = -15<br><br> CAN SOMEONE HELP ME PLEASE

Maksim231197 [3]

Answer: x= 1

Step-by-step explanation: Look at pic down below.

7 0

3 years ago

Enter the number 95.2185 below exactly (no rounding)<br> Help please

creativ13 [48]

Answer:

Is this the answer 95.2185

5 0

3 years ago

Read 2 more answers