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3 years ago

What is the SST for the data set (1,5), (2,9), (4,10)

Mathematics

2 answers:

lianna [129]3 years ago

3 0

I think that the answer is (4,10). hope it helped :)

Bad White [126]3 years ago

3 0

Answer:

Step-by-step explanation:

SST = ∑ ( y − ȳ ) ² (ȳ = pronounced y bar is the mean of y values)

ȳ = (5+9+10)/3 = 24/3 = 8

∑ ( y − ȳ ) ² = ( 5 − 8 ) ² + ( 9 − 8 ) ² + ( 10 − 8 ) ²

= ( − 3 ) ² + ( 1 ) ² + ( 2 ) ²

= 9 + 1 + 4

= 14

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The quotient of two times a number and 5 is no more than 14.

OlgaM077 [116]

Answer:

2x/5 <14

Step-by-step explanation:

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3 years ago

Write a point slope form of the line that passes through (6,1) and it is parallel to a line with a slope of -3

Dafna1 [17]

Answer:

Step-by-step explanation:

y - 1 = -3(x - 6)

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3 years ago

Pens are on sale for 3 pens for $6 Karen bought 3 pens Leo bought 1 pen how much more did Karen spend than Leo

Rasek [7]

If the correlation is correct, then 1 pen would be equal to $2. In this case, karen spent $2 for each pen for a total of 3 pens for $6. If Leo bought 1 pen, he would spend $2. So, $6-$2=$4. Karen spent 4 more dollars than Leo. If this helped, please mark me brainliest, thank you and if you need more help, feel free to message me!

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3 years ago

A mattress store sells only king, queen and twin-size mattresses. Sales records at the store indicate that the number of queen-s

Nitella [24]

Answer:

The probability that the next mattress sold is either king or queen-size is P=0.8.

Step-by-step explanation:

We have 3 types of matress: queen size (Q), king size (K) and twin size (T).

We will treat the probability as the proportion (or relative frequency) of sales of each type of matress.

We know that the number of queen-size mattresses sold is one-fourth the number of king and twin-size mattresses combined. This can be expressed as:

$P_Q=\dfrac{P_K+P_T}{4}\\\\\\4P_Q-P_K-P_T=0$

We also know that three times as many king-size mattresses are sold as twin-size mattresses. We can express that as:

$P_K=3P_T\\\\P_K-3P_T=0$

Finally, we know that the sum of probablities has to be 1, or 100%.

$P_Q+P_K+P_T=1$

We can solve this by sustitution:

$P_K=3P_T\\\\4P_Q=P_K+P_T=3P_T+P_T=4P_T\\\\P_Q=P_T\\\\\\P_Q+P_K+P_T=1\\\\P_T+3P_T+P_T=1\\\\5P_T=1\\\\P_T=0.2\\\\\\P_Q=P_T=0.2\\\\P_K=3P_T=3\cdot0.2=0.6$

Now we know the probabilities of each of the matress types.

The probability that the next matress sold is either king or queen-size is:

$P_K+P_Q=0.6+0.2=0.8$

8 0

3 years ago

Find the product <br> .13 & 2.07 =<br> .73 & 1.5 =

Margarita [4]

When the "product" is used in math it means to multiply so.

0.13 x 2.07 = 0.2691
0.73 x 1.5 = 1.095

3 0

3 years ago