Answer:
- 11x - 2
Step-by-step explanation:
note that (f + g)(x) = f(x) + g(x)
f(x) + g(x)
= 2x + 1 - 13x - 3 ← collect like terms
= - 11x - 2
Answer:
19.80
Step-by-step explanation:
Given the equation :
y = a (e)^kt
If a = 100, y = 50, and k = -0.035, find t.
50 = 100(e)^(-0.035t)
50/100 = e^(-0.035t)
0.5 = e^-0.035t
Take the In
In(0.5) = - 0.035t
-0.693147 = - 0.035t
-0.693147 / - 0.035 = t
19.8042 = t
Hence, t = 19.80
Answer:
22=90 23=15 24=60 25=0.75 26=70 37=$0.58
Step-by-step explanation:
22. So, we can divide 360 kmh by 4 hours
so 360/4 =90
So 90 kmh in 1 hr
23
So, we can divide 3 packages by $15
so 15÷3 = $5
So $5 per package
24 So, we can divide 720 m by 12s
So, 720/12= 60
60 m in 1 s
25
So, we can divide $4.50 by 6
So, we get $0.75
26
So, we can divide 210 words by 3 min
So, 210÷3=70
70 words per minute
27
So, we can divide 23.20 by 40l
So, 23.20÷40 = 0.58
$0.58
Answer:
21 questions
Step-by-step explanation:
First find the unit rate by dividing question number by hours
35/5=7
So he makes 7 questions per hour
Multiply 7 by 3
7*3=21
So, he makes 21 questions in 3 hours
Hope this helps! :)
I'm pretty sure it's <em>C</em>
Step-by-step explanation:
2/3=8/12
8/12 ....divided both by 4=2/3
2/3=2/3
