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ZanzabumX [31]
3 years ago
8

The data in the table compares x, the number of pages in a chapter, to y, the amount of time, in minutes, spent reading. The fun

ction y = 0.86x – 0.09 models the data in the table
Which is the best prediction for the number of pages in a chapter that takes 18 minutes to read?
15
17
19
21
Mathematics
2 answers:
Verizon [17]3 years ago
8 0

Answer:

The answer is D on E2020.

Step-by-step explanation:

ololo11 [35]3 years ago
7 0
21
18=0.86x - 0.09     Put 18 as the y value and solve for x
18.09=0.86x           Add 0.09 on both sides.
21.03=x                  Then divide on both sides by 086

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OnOff
Anestetic [448]

Answer:

House A

Step-by-step explanation

For house A:

divide 125,260 by to to find 10%.

10% = 12,526.The you divide this by two to get 5%.

5% = 6,263.Next add the original figure with the 5%. To makes things simpler insted of adding 5% percent twice(since were calculating for two years) just add the 10% to the original figure you get:

125,260 + 12,526= $137,786

For house B:

This is a little different than before. Find ten percent then 5 percent.

10%= 12,016

5%=6,008.Next to find 1% divide the 10% again!

1%-1,201.6,After add the five percent and 1% to find 6%.

6%=7,209.6. Multiply the 6% by 2 to find the price for 2 years.Next add the original number to the 12%.

12%=14,419.2

17,419.2+120,160= $134,579.2

In conclusion:

Compare the prices-

A=$137,786

B=$134,579.2

House A earns more money after two years.

Your welcome,this took me forevever:)))))

4 0
3 years ago
Please help !!! I’m stuck
Kruka [31]

Answer:

2/3 ≈ 0.6667

Step-by-step explanation:

apply soh cah toa

sine=opposite/hypo

sine=4/6

sine=2/3

4 0
3 years ago
Why is it necessary to check that n modifyingabove p with caret greater than or equals 5np≥5 and n modifyingabove q with caret g
Nookie1986 [14]

Both of these conditions must be true in order for the assumption that the binomial distribution is approximately normal. In other words, if np \ge 5 and nq \ge 5 then we can use a normal distribution to get a good estimate of the binomial distribution. If either np or nq is smaller than 5, then a normal distribution wouldn't be a good model to use.

side note: q = 1-p is the complement of probability p

4 0
3 years ago
Question 2b only! Evaluate using the definition of the definite integral(that means using the limit of a Riemann sum
lara [203]

Answer:

Hello,

Step-by-step explanation:

We divide the interval [a b] in n equal parts.

\Delta x=\dfrac{b-a}{n} \\\\x_i=a+\Delta x *i \ for\ i=1\ to\ n\\\\y_i=x_i^2=(a+\Delta x *i)^2=a^2+(\Delta x *i)^2+2*a*\Delta x *i\\\\\\Area\ of\ i^{th} \ rectangle=R(x_i)=\Delta x * y_i\\

\displaystyle \sum_{i=1}^{n} R(x_i)=\dfrac{b-a}{n}*\sum_{i=1}^{n}\  (a^2 +(\dfrac{b-a}{n})^2*i^2+2*a*\dfrac{b-a}{n}*i)\\

=(b-a)^2*a^2+(\dfrac{b-a}{n})^3*\dfrac{n(n+1)(2n+1)}{6} +2*a*(\dfrac{b-a}{n})^2*\dfrac{n (n+1)} {2} \\\\\displaystyle \int\limits^a_b {x^2} \, dx = \lim_{n \to \infty} \sum_{i=1}^{n} R(x_i)\\\\=(b-a)*a^2+\dfrac{(b-a)^3 }{3} +a(b-a)^2\\\\=a^2b-a^3+\dfrac{1}{3} (b^3-3ab^2+3a^2b-a^3)+a^3+ab^2-2a^2b\\\\=\dfrac{b^3}{3}-ab^2+ab^2+a^2b+a^2b-2a^2b-\dfrac{a^3}{3}  \\\\\\\boxed{\int\limits^a_b {x^2} \, dx =\dfrac{b^3}{3} -\dfrac{a^3}{3}}\\

4 0
3 years ago
PLEASE HELP ME!!! I NEED HELP WITH GEOMETRY QUESTION ASAP!! DESPRATLY
BartSMP [9]

Answer:

The answer to your question is:      y = -3x + 14

Step-by-step explanation:

Data

A (4, 2)

y = x/3  - 1

Perpendicular

original slope = 1/3

perpendicular slope = -3

Equation                 (y - y1) = m(x - x1)

                               (y - 2) = -3(x - 4)

                               y - 2 = -3x + 12

                               y = -3x + 12 + 2

                               y = -3x + 14

4 0
3 years ago
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