Ask question

Ask question

All categories

3 years ago

7

An airplane descends 1.5 miles to an elevation of 5.95 miles. Write and solve an equation to find the elevation of the plane bef

ore its descent.

1 answer:

Lyrx [107]3 years ago

7 0

U correct 2.25 is the evelvation before its decent

You might be interested in

i don’t know how to divide integers and i have a test tomorrow based on adding subtracting multiplication and division on intege

ryzh [129]

In order to divide integers, the first thing to check is the sign:

- When dividing two positive integers, the result will be a positive integer.

- When dividing two negative integers, the result will be a positive integer.

- When dividing integers with different signs (one negative and one positive), the result will be a negative integer.

Then, after checking the sign, we need to calculate the value of the division.

Some examples of divisions are:

$\frac{24}{8},\frac{-15}{5},\frac{-100}{-10}$

In the first division, the result is 3, because we have that 8 * 3 is equal 24.

Also, both numbers are positive, so the result is also a positive number.

In the second division, the result is -3, because 5 * (-3) is equal -15.

The result is negative, because the two numbers have different signs.

In the third division, the result is 10, because -10 * 10 is equal -100.

The result is positive, because both numbers are negative.

4 0

1 year ago

Suppose A and B represent two different school populations where A > B and A and B must be greater than 0. Which of the follo

lina2011 [118]

C. A^2 +B^2 will be the largest because we know that (a+b)^2 = a^2 +2ab +b^2

so than you check these other choices this ie the largest sure

hope this will help you

8 0

3 years ago

Labor economists have extensively researched the determinants of earnings. Invest-ment in human capital, measured in years of ed

never [62]

Answer:

Kindly check explanation for other solutions

Years, Inning and saves are statistically significant ; ERA is not.

Step-by-step explanation:

Earning for staying one additional year :

Multiply slope value of years * 1 = 0.052 * 1 * 100 % = 5.2% (earning increases by 5.2%)

Relives with 10 more saves :

10 * 0.0032 * 100% = 3.2% (earning increases by 3.2%)

Having 100 more innings :

100 * 0.00089 * 100% = 8.9%

If ERA is reduced by 1.5 ; earning will increase by (0.0085*100)% * 1.5 = 1.275%

B.) At 5% level of confidence :

α = 1.64

Years = 0.052/0.026=2

Inning = 0.00089/0.00020 = 4.45

Saves = 0.0032/0.0018 = 1.78

ERA = 0.0085/0.0168 = 0.51

Years, Inning and saves are statistically significant as they are greater than α ; As for ERA, it is not statistically significant (0.51 < 1.64)

8 0

3 years ago

Evaluate <br> -7 - (-8) + (-3) + 6 - 2

Andru [333]

Answer:

2

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers

At a two-hour basketball practice, Tracy can either choose to run miles, which take six minutes per mile, or play scrimmage game

Lera25 [3.4K]

Answer:

See the image attachment. It shows the three inequalities

$6m+30s \le 120$

$0 \le m \le 5$

$s \ge 0$

the inequalities are all stacked on each other with a large curly brace written off to the left

===========================================

Explanation:

Let,

m = number of miles Tracy runs

s = number of scrimmage games Tracy plays

m and s are integers

-------

Each mile takes 6 minutes, so running m miles takes up a total of 6m minutes.

Each scrimmage game takes 30 minutes, so in total she uses up 30s minutes of time if the number of games she plays is 's'.

In total, Tracy uses up 6m+30s minutes running and playing scrimmage games. The max time allotted for her is 2 hours or 120 minutes. Therefore, $6m+30s \le 120$ is one inequality that makes up the system of inequalities.

-------

We know that 'm' is positive, and we also know that m cannot get larger than 5, so we can write $0 \le m \le 5$ . This says "m is between 0 and 5 including both endpoints".

-------

For similar reasons in the last section above, we also know that 's' is positive as well; however we have no upper bound restrictions on 's'. So we simply say $s \ge 0$

-------

Overall, the system of inequalities has these three inequalities:

$6m+30s \le 120$

$0 \le m \le 5$

$s \ge 0$

they are all stacked on each other and written with a large curly brace to the left hand side of this stack. The large curly brace is just a way of keeping things together in a group or collection so to speak. A paired right curly brace is not included.

A visual reference of the answer is attached as an image below, just so you can see what I mean by the large curly brace.

3 0

3 years ago