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steposvetlana [31]
3 years ago
11

Which of the following r-value represents the strongest correlation ?

Mathematics
1 answer:
Elena-2011 [213]3 years ago
3 0
Since 0.68 is closest to 1, so the answer is 

<span>A) 0.68</span>
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-12 + (-3) • 3 - 8 = 4​
mestny [16]

Answer:- 29

false

Step-by-step explanation:

4 0
3 years ago
What is the value of 6 + 2x when x = 5?<br><br> (A) 4<br> (B) 13<br> (C)16<br> (D) 40
jasenka [17]

so x=5

substituting for x in the equation we get:

6+2 \times 5 \\  = 6 + 10 = \\  = 16

Ans C: 16

4 0
3 years ago
Numbered disks are placed in a box and one disk is selected at random. If there are 6 red disks numbered 1 through 6, and 2 yell
Tatiana [17]

Answer:

\frac{3}{4}

Step-by-step explanation:

Total number of red disk=6

Total number  of yellow disk=2

Total disk=6+2=8

Odd number=1,3,5,7=4

Odd number on red disk=1,3,5=3

Probability,P(E)=\frac{favorable\;cases}{total\;number\;of\;cases}

Using the formula

The probability of getting odd number disk=\frac{4}{8}=\frac{1}{2}

The probability of getting odd numbered  red disk=\frac{3}{8}

The probability of selecting a red disk,given that an odd numbered disk is selected=\frac{\frac{3}{8}}{\frac{1}{2}}=\frac{3}{8}\times 2=\frac{3}{4}

Using conditional probability

P(A/B)=\frac{P(A\cap B)}{P(B)}

6 0
3 years ago
7
Marat540 [252]

Answer:

Plan A equation:   y = 10x + 30

Plan B equation:  y = x + 80

Plan C equation: y = 5x + 50

Plan A costs the same as Plan C in 4 months

Plan A is the better option if you use 0 - 4 GBs of data each month

Plan B becomes the better deal when 8 months pass

Step-by-step explanation:

<u>When does Plan A cost the same as Plan C?</u>

Set the equations equal to each other (the cost) and solve for x (time in months)

10x + 30 = 5x + 50

5x = 20

x = 4 months

<u>Which plan is best if you only use 0-4 GBs of data a month?</u>

Test the maximum and minimum values to check which plan costs less

At 0 GBs of data used per month

Plan A:  y = 0 + $ 30 = $30 total

Plan B: y = 0 +$80 = $80 total

Plan C: y = 0 + $50 = $50 total

At 4 GBs of data used per month

Plan A: y = $ 40 + $ 30 = $ 70

Plan B: y = $ 4 + $ 80 = $ 84

Plan C: y = $ 20 + $ 50 = $ 70

Comparing the plans at maximum and minimum amount of GBs used, only one plan has the lowest cost overall. Even though Plan C is the same price at 4 GBs as Plan A, when you use 0 GBs you will end up paying more in Plan C than Plan A. Therefore, Plan A is the better option

<u>When does Plan B become the best deal?</u>

When you plot the different Plans on a graph, the slope intercept of x = 7.5 (rounded up to 8) yields the lowest cost for plan B

5 0
2 years ago
Olve the two-step equation and identify the steps.<br><br> 2 = − 7<br> 4<br> + 1<br> 4<br> x
saul85 [17]

Answer:

x = 5.142

Step-by-step explanation:

<em>2=-74+14x</em>

if you want to make x the subject (work out its value), you need to single out x

1) the first thing that we can do is get rid of the -74

2) do this by adding it on to both sides of the equation. This is called the inverse

<em>2+-74=-72   -74+14x=14x</em>

<em>-72=14x</em>

3) to get x on its own, we now need to get rid of the 14

REMEMBER:<em> 14x = 14×x</em>

4) We do the inverse by dividing both sides by 14

<em>-72÷14=-5.142..</em>.

its surprising that its not an integer

<em>5.142=x</em>

<em>x=5.142 </em>

PLEASE LET ME KNOW IF THIS IS CORRECT

6 0
3 years ago
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