Answer:
f(-4) = -9
Step-by-step explanation:
f(x)=2x-1
Let x = -4
f(-4)=2*-4-1
= -8 -1
= -9
Answer:
x=7
Step-by-step explanation:
![1 + 3x = - 13 + 5x](https://tex.z-dn.net/?f=1%20%2B%203x%20%3D%20%20-%2013%20%2B%205x)
Collect like terms and simplify
![3x - 5x = - 13 - 1 \\ - 2x = - 14](https://tex.z-dn.net/?f=3x%20-%205x%20%3D%20%20-%2013%20-%201%20%5C%5C%20%20-%202x%20%3D%20%20-%2014)
Divide both sides of the equation by -2
![\frac{ - 2x}{ - 2} = \frac{ - 14}{ - 2}](https://tex.z-dn.net/?f=%20%5Cfrac%7B%20-%202x%7D%7B%20-%202%7D%20%20%3D%20%20%5Cfrac%7B%20-%2014%7D%7B%20-%202%7D%20%20)
Simplify
![x = 7](https://tex.z-dn.net/?f=x%20%3D%207)
Answer:
a) 3 b) 5 c) 7 d) 9
Step-by-step explanation:
For this, you want to replace x in the equation y=x+5 with each of the values listed.
For the first one, -2, the equation becomes y=-2+5, which is solved to y=3.
For the second one, 0, the equation becomes y=0+5, which is solved to y=5.
For the third one, 2, the equation becomes y=2+5, which is solved to y=7.
For the last one, 4, the equation becomes y=4+5, which is solved to y=9.
**This content involves solving algebraic equations with a known variable, which you may wish to revise. I'm always happy to help!
The formula to find surface area of a sphere is
![4\pi \: r {}^{2}](https://tex.z-dn.net/?f=4%5Cpi%20%5C%3A%20r%20%7B%7D%5E%7B2%7D%20)
(if the diameter is 16,the radius is 8.)
![4 \times 8 \times 8 \times \pi = 256\pi](https://tex.z-dn.net/?f=4%20%5Ctimes%208%20%5Ctimes%208%20%5Ctimes%20%5Cpi%20%3D%20256%5Cpi)
so the answer is 256pi
Answer:
okkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkk!!!!!!!
Step-by-step explanation:
thanks:)