Answer:
x=−4
Step-by-step explanation:
Let's solve your equation step-by-step.
−6x+4x=8
Step 1: Simplify both sides of the equation.
−6x+4x=8
(−6x+4x)=8(Combine Like Terms)
−2x=8
−2x=8
Step 2: Divide both sides by -2.
−2x
−2
=
8
−2
x=−4
Answer:
13 = x
Step-by-step explanation:
136 =3x-5(4)
136 = 12x-20
136/12 = 12x/12
13 = x
Answer:
20
Tips:
Its easy math if its trouble use a caclulator
Answer:
{}
The number line is attached.
Step-by-step explanation:
By definition Set-builder notation is a mathematical shorthand used to provide specific details about a set.
In this case, you have the following interval:
You can obsseve that the left hand contains a parentheses, which means that -6 it is not included, then:
The right hand contains a bracket, which means that 2 is included:
The inequality is:
Therefore, in Set-builder notation this is:
{}
Observe the number line attached. Since -6 is not included, you must use an unfilled circle. Since 2 is included, you must use a filled circle.
The 48 flies of them will live longer than 21 days if there are 300 houseflies in the study.
<h3>What is a normal distribution?</h3>
It's the probability curve of a continuous distribution that's most likely symmetric around the mean. On the Z curve, at Z=0, the chance is 50-50. A bell-shaped curve is another name for it.
We have mean u = 18 days
SD = 3 days
X = 21 days
From the formula:
Z = (X - u)/SD
Z = (21 - 18)/3 = 1
P(x<21) = 0.84134
P(x>21) = 1 - P(x<21) = 0.15866
Number of flies = 300×0.15866 = 47.59 ≈ 48 flies
Thus, the 48 flies of them will live longer than 21 days if there are 300 houseflies in the study.
Learn more about the normal distribution here:
brainly.com/question/12421652
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