Answer: x=2 Please mark as brainliest
Step-by-step explanation: 16+7+4x=x+3x+7
combine like terms: 23+4x=4x+7
get x to one side: 23=8x+7
subtract: 16=8x
divide: x=2
Answer:
The height of the tree is 80 meters.
Step-by-step explanation:
Let the height of the Christmas tree be x meters.
Then the length of the wire will be, (x + 9) meters.
And the wire will (x - 41) meters away from the base of the tree.
Consider the diagram below.
Use Pythagoras theorem to solve for x as follows:
The value of x is either 80 or 20.
If x = 20, then the base CB will be -21. This is not possible as length is always positive.
Thus, the value of x is 80.
Hence, the height of the tree is 80 meters.
Answer:
Step-by-step explanation:
If we have an equation and we want to find what b is in relation to a, we can change the equation so that we have b on one side and whatever is on the other side is what b is.
To isolate b, we can take the square root of both sides as taking the square root of something squared results in the base.
So b is the square root of a.
Hope this helped!
Complete Question
Let x be a continuous random variable that follows a normal distribution with a mean of 550 and a standard deviation of 75.
a
Find the value of x so that the area under the normal curve to the left of x is .0250.
b
Find the value of x so that the area under the normal curve to the right ot x is .9345.
Answer:
a
b
Step-by-step explanation:
From the question we are told that
The mean is
The standard deviation is
Generally the value of x so that the area under the normal curve to the left of x is 0.0250 is mathematically represented as
Generally the critical value of 0.0250 to the left is
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=>
=>
Generally the value of x so that the area under the normal curve to the right of x is 0.9345 is mathematically represented as
Generally the critical value of 0.9345 to the right is
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3(x+y)+4(y+x)
Answer:
7x+7y
Step-by-step explanation:
3x+3y+4y+4x
7x+7y