Answer:
a=-2
b=4
c=-3
Step-by-step explanation:
You just compare -2x^2+4x-3=0 to
ax^2+bx+c=0
There is really no work here.
Answers 17,83,83,72
#1. 1+7=8 and 1^2+7^2=50
#2. 8times 3=24 8-3=5
#3. 8^2+3^2=64+9=73
#4. 7-2=5. 7^2-2^2= 49-4=45
Answer:
0.089557
Step-by-step explanation:
Given thqt:
Mean, m = 45000
Standard = 10000
What percentage of trucks can be expected to travel either below 30 or above 65 thousand miles in a year
Below 30, 000
P(x < 30000)
Obtain the standardized score :
Z = (x - m) / s
Z = (30000 - 45000) / 10000
Z = - 15000 / 10000
Z = - 1.5
P(Z < - 1.5) = 0.066807
Above 65,000
P(x > 65000)
Obtain the standardized score :
Z = (x - m) / s
Z = (65000 - 45000) / 10000
Z = 20000 / 10000
Z = 2
P(Z > 2) = 0.02275 (Z probability calculator)
P(Z < - 1.5) + P(Z > 2)
0.066807 + 0.02275
= 0.089557
The number of birds is an illustration of ratio and proportions, and Emma is 5 years old
<h3>How to determine Emma's age?</h3>
From the complete question, Emma's age is the sum of the simplified ratio between the number of birds.
The ratio can be represented as:
Birds = 200 : 300
Simplify the ratio
Birds = 2 : 3
Add the numbers in the above ratio
Emma = 2 + 3
Emma = 5
Hence, Emma is 5 years old
Read more about ratios at:
brainly.com/question/2328454
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