Answer: 12 tigers
Step-by-step explanation:
Since the ratio of lions to tigers is 1:3, meaning that for every one lions there three tigers and there's 4 lions and for every one lion there 3 tigers so we need to mulitpy 4 by 3
4×3=12 meaning there 12 tigets in the zoo.
Add all of the numbers and divide by the amount of numbers added
The first problem
x(x+3)=28
x^2+3x=28
x=4
The second problem
x(x-4)=32
x^2-4x-32=0
x=8
The sample relative risk is 10.
<h3>
What is relative risk? </h3>
Sample relative risk is the ratio of disease risk or death in an exposed group to the disease risk or death in an unexposed group. Sample relative risk is a descriptive statistic.
What is the sample relative risk?
Sample relative risk = fraction of coal miner who got lung cancer / fraction of non coal miners who got lung cancer
Sample relative risk = (30 / 150) ÷ (5/250)
(1/5) ÷ (1/50
1/5 x 50 = 10
To learn more about sample, please check: brainly.com/question/18521835
Answer:
Step-by-step explanation:
-8x+4=20
-8x=20-4
x=16/-8
x=-2
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