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krok68 [10]
2 years ago
10

Make a scatter plot of the data below. x y 25 150 50 178 75 216 100 265 125 323 150 392 175 470.4 Using the quadratic regression

equation predict what the y-value will be if the x-value is 200.
a. y = 83.5
b. y = 346.9
c. y = 238.1
d. y = 555.5

Mathematics
1 answer:
frutty [35]2 years ago
7 0
By looking at the scatter plot we can predict that the answer will be higher than previous answers since there is a positive relationship between x and y. With this idea, we can determine that a. is not the answer. Since it is too small of a y value. It also can't be b or c since these values are also small. Therefore the answer is d, for an x value of 200 the y value should be 555.5 from the choices given. 

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Suppose a term of a geometric sequence is a4 = 121.5 and the common ratio is 3. write the formula for this sequence in the form
9966 [12]
The rule of the <span>geometric sequence is a* r^{n-1}
a ⇒⇒⇒ </span><span>the first term
r ⇒⇒⇒ </span><span>common ratio

Given: the fourth term </span>(a4) <span>= 121.5   and the common ratio = 3  and   n = 4

∴</span><span> 121.5 = a* 3^{4-1}
∴ a = 121.5/3³ = 121.5/27 = 4.5

So, T</span><span>he formula for this sequence will be</span><span>    4.5 * 3^{n-1}</span>
8 0
2 years ago
Read 2 more answers
Lawrence has $50.
timofeeve [1]
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7 0
2 years ago
A store charges 7% sales tax. Which expression can be used to find the total cost of an item with a price of p? 0.07p 0.93p 1.07
Zanzabum

If you have an item that costs 10 dollars and a sales tax of 7% you could do it this way


10 * 7/100 = 0.70 dollars.


The total cost is 10.70 dollars. or 10 dollars and 70 cents.

The best way to do the total however is to multiply the cost by 1.07. You will get the number the customer has to pay.

10 * 1.07 = 10.70

So for any price (p) it would be 1.07*p

5 0
2 years ago
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The mean of three numbers is 70. if two of the numbers are 55 and 65 what is the third number
Margarita [4]
90
55+65=120
there are 3 numbers and when you divide them it makes 70.
70 x 3 = 210
210 - 120 = 90
55 + 65 + 90 = 210
210 / 3 = 70
6 0
2 years ago
Read 2 more answers
If 48% of the students in a certain college are female and there are 1440 female students, what is the total number of students
Andrews [41]

Answer:

3000 students

Step-by-step explanation:

If 48% of the students are female, and there are 1440 female students, we can set up a percentage proportion, assuming x is the total amount of students.

\frac{1440}{x} = \frac{48}{100}

We can use the cross products property to find the value of x.

1440\cdot100=144000\\\\144000\div48=3000

Hope this helped!

5 0
2 years ago
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