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PtichkaEL [24]
2 years ago
12

Which of the following tables represents a function?

Mathematics
2 answers:
nirvana33 [79]2 years ago
7 0

Answer:

B

Step-by-step explanation:

Every time the y-value increases by one, the function multiplies the x-value by -1

RUDIKE [14]2 years ago
3 0

Answer:

Option D

Step-by-step explanation:

cause in function one single domain can have many range but many range can't have single domain.

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Please help me with this problem. I am not sure if I am correct.
jek_recluse [69]

Answer:

only -7

Step-by-step explanation:

Just plug them in.

so for x=-7 \sqrt{-2(-7)-5}=(-7)+4\\\sqrt{9}=-3 \\ 3=-3So this one is extraneous

Then if you plug -3 in you get 1 = 1 so this one is not extraneous.  if you need me to work this one out let me know.  

3 0
3 years ago
If z=2.5, x=102 and x=100, what is s?
Bad White [126]

I believe the problem ask for s which is the standard deviation. We must recall that the formula for z statistic is stated as:

z = (x – x over bar) / s

Where,

z = z statistic = 2.5

x = sample value or sample score = 102

x over bar = the sample mean or sample average  = 100

s = standard deviation = unknown

Rewriting the equation in terms of s:

s = (x – x over bar) / z

Substituting the given values into the equation:

s = (102 – 100) / 2.5

s = 0.8  

Therefore the standard deviation s is 0.8

7 0
3 years ago
17 subtracted from x is at lest 19
o-na [289]
17 subtracted from x is:
x-17

x-17 is AT LEAST 19, meaning your inequality sign is going to be a greater than or equal to sign, since it says AT LEAST.

Your expression will be:
x-17≥19
7 0
3 years ago
An engineering scale model shows a church that is 2 inches tall. If the scale is 1 inch = 265 feet, how tall is the actual churc
Nitella [24]
That would be 2 * 265  = 530 feet tall.
4 0
3 years ago
Write the equation of a line in slope intercept form that is parallel to the line y= 1/3x + 5 and passes through (-9, 5)
vladimir2022 [97]
Find the slope of line 1
The equation of line 1 is y = (1/3)x + 5
m = 1/3

Find the slope of line 2
Line 2 is parallel to line 1. Parallel lines have the same number of slope. So the slope of line 2 is 1/3

Find the slope-intercept form of equation, with m = 1/3 and (-9,5)
General formula
y - y₁ = m(x - x₁)

Input the number to the formula
y - y₁ = m(x - x₁)
y - 5 = 1/3(x - (-9))
y - 5 = 1/3 (x + 9)
y - 5 = (1/3)x + 3
y = (1/3)x + 3 + 5
y = (1/3)x + 8

The equation is y = (1/3)x + 8
7 0
3 years ago
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