The result is
3x^2 + 2 + 3/2x-1
Complete question is;
Leslie is a biologist. She is going to randomly select one animal from her lab to study. There are 5 salamanders, 3 crayfish, and 12 minnows in her lab. What is P(salamanders).
Answer:
P(salamanders) = 0.25
Step-by-step explanation:
We are given;
number of salamanders = 5
number of crayfish = 3
number of minnows = 12
total number of animals; n = 5 + 3 + 12 = 20 animals
Now, we want to find out the probability that the animal Leslie randomly selected is a Salamander.
Thus,
P(salamander) = number of salamanders/total number of animals
P(salamander) = 5/20
P(salamander) = ¼ = 0.25
The slope is the change in Y over the change in X.
(-9,6) is X1 and Y1.
(-3,9) is X2 and Y2.
Slope = Y2-Y1 / X2-X1
Slope = 9 - 6 / -3 - (-9)
Slope = 3/6 = 1/2
The slope = 1/2
Robs lunch cost is unknown = x
and we know carla's cost 15 = 15
x + 15 = total lunch cost
now me know 20% is 6
so 20% of total lunch cost is 6
or
(x+15)(.02) which is 20% of lunch and this is 6
or
(x+15)(.02) = 6 this is the equation to find x
this is the answer, but for kicks lets solve it to to find the cost
.2x + 3 = 6
- 3 -3
.2x = 3
/.2 /.2
x = 15
Robs lunch cost $15 too
Answer:
Unit rate is $7 per pound.
6 pounds will cost $42
You can buy 10 pounds for $70
Step-by-step explanation:
28/4 = $7 --> Unit rate is $7 per pound.
7 × 6 = $42 --> 6 pounds will cost $42
70/7= 10 --> You can buy 10 pounds for $70
