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amm1812
3 years ago
15

Rewrite the equation x + y + 3 = -2x + 4y + 18 into general form

Mathematics
1 answer:
dolphi86 [110]3 years ago
5 0

Answer:

x-y=5 just solve it to get the answer

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Pregnancy length (in days) is a normally distributed random variable with a mean of 266 days and a standard deviation of 16 days
velikii [3]

Answer:

it=552

Step-by-step explanation:

with rounding it = 550

5 0
3 years ago
Statistics Question. Use the Desmos graphing calculator to find the least-squares regression line for the dataset in the table:
Soloha48 [4]

Given:

The table of values.

To find:

The least-squares regression line for the data set in the table by using the desmos graphing calculator.

Solution:

The general form of least-squares regression line is:

\hat{y}=mx+b           ...(i)

Where, m is the slope and b is the y-intercept.

By using the desmos graphing calculator, we get

m\approx 2.55,b\approx -6.435

Substitute these values in (i).

\hat{y}=(2.55)x+(-6.435)

\hat{y}=2.55x-6.435

Therefore, the correct option is A.

8 0
3 years ago
A commercial aircraft gets the best fuel efficiency if it operates at a minimum altitude of 29,000 feet and a maximum altitude o
Semenov [28]

Answer:

A

Step-by-step explanation:

A is correct because if the minimum is 29,000 feet, x (the airplane altitutude) must be greater than or equal to 29,000 ft. Since the maximum is 41,000 feet, x must be less than or equal to that number.

6 0
3 years ago
A set of sweater prices are normally distributed with a mean of 58 dollars and a standard deviation of 5 dollars. What proportio
Airida [17]

Answer: 0.6267

Step-by-step explanation:

6 0
3 years ago
A group of adults plus one child attend a movie at a movie theater. Tickets cost $9 for adults and $3 for children. The total co
dmitriy555 [2]

Answer:

There are 6 adults. <em>My mistake! I had the wrong equation. 3 + 9a = 57.</em>

Step-by-step explanation:

  • <u>There is only 1 child in the group.</u>
  • Cost for children is 3$.
  • <u>The cost for adults is 9$.</u>
  • 9 * 6 = 54
  • 3 * 1 = 3
  • 3 + 9a = 57
  • Simplify:
  • 6 Adults.
8 0
3 years ago
Read 2 more answers
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