B is 8 plus 3A
C is 37 plus A
A is A
A plus B plus C is 180
A plus 8 plus 3A plus 37 plus A is 180
5A plus 45 is 180
5A is 135
A is 27
B is 8 plus 3 times 27
B is 8 plus 81
B is 59
C is 37 plus 27
C is 64

3 0

3 years ago

HURRY TIMEDD!!!!!

Anestetic [448]

Answer:

Second option is the correct choice.

Step-by-step explanation:

"The discriminant is −4, so the equation has no real solutions."

$x^2-4x+5=0\\\\a=1,\:b=-4,\:c=5:\\\\b^2-4ac=\left(-4\right)^2-4\cdot \:1\cdot \:5=-4$

Best Regards!

7 0

2 years ago

The number of cars sold at a dealership over several weeks is given below. 14, 23, 31, 29, 33 What is the standard deviation for

Trava [24]

Answer:

7.6811

Step-by-step explanation:

Given that is a sample of size 5, with readings as

14, 23, 31, 29, 33

Sum = 130: Hence mean = 130/5 =26

Let us find for each entry x the value x-26

X 14 23 31 29 33

(x-26)^2 144 9 25 9 49

Hence variance = average of $(x-26)^2== \frac{236}{5} =47.20$

Std dev = $\sqrt{47.2} \\$

Population std dev = Sample std dev/sq rt (n-1)

= $\frac{\sqrt{47.2} }{\sqrt{5-1} } \\=7.6811$

3 0

2 years ago

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