Please help me this is urgent I will mark brainliest

You and your friend are painting the walls in your apartment. You estimate that there is 1000 square feet of space to be painted

leva [86]

After 45 minutes you will have painted 4*45=180 square feet.

so the total number of painted area, y, is:

y=180+x*(3+4) after the 45 minutes

where x is the number of minutes AFTER THE 45 minutes:

if y is 1000 then

1000=180+x*7
820=x*7
x=117.14

so 117 minutes, or one hour and 57 minutes.

5 0

3 years ago

5.75 , 7.75 , 9.75 , 11.75 is a Non linear sequence ? is it true or false

Tomtit [17]

Answer:

false because each go up by two and I didnt even look it up

5 0

3 years ago

Read 2 more answers

A plane flies from NY to Chicago, which is about 700 miles, at a speed of 330 mph. How long does the flight take? On a return tr

sashaice [31]

Answer:

Flight takes 2.12 hrs from NY to chicago

The tailwind speed was x = 143.4 mph

Step-by-step explanation:

Given:-

- The distance from NY to Chicago, d = 700 miles

- The speed of plane, vo = 330 mph

- The speed of tailwind = x

- The total time for round trip T = 3.7 hrs

Find:-

How long does the flight take?

how fast is the tailwind?

Solution:-

- The total time "T" of the round-trip consists of time taken "t1" for journey from NY to Chicago and time taken "t2" from Chicago to NY.

- Time taken from NY to Chicago (t1) = d / vo

= 700 / 330

= 2.1212 hrs

- Whereas, the time time taken (t2) on return journey from Chicago to NY with the help of tailwind with speed x was:

- Time taken from Chicago to NY (t2) = d / (vo+x)

- The total time taken for round-trip = T

- We will sum individual times "t1" and "t2" and equate to "T"

2.1212 + 700 / ( 300 + x ) = 3.7

- Re-arrange and solve for x:

700 = (3.7 - 2.1212)*(300 + x )

700 = 473.6364 + 1.5788x

x = 226.3636/1.5788

x = 143.38 mph

4 0

4 years ago

Classify the triangle with angles with measures 33, 90, and 57 as acute, right, or obtuse.

Hitman42 [59]

This triangle is classified as a right triangle because it contains one right angle (90 degrees).

An obtuse triangle is given that classification when one of the angles is greater than 90 degrees.

An acute triangle is any triangle that has all 3 angles less than 90 degrees.

5 0

3 years ago

Read 2 more answers

-18, 10, -20, -11, 9, 18 Mean Median Mode Range

Vlada [557]

Mean = -2

Median = -1

Mode = Nil

Range = 38

Step-by-step explanation:

Given data is:

-18, 10, -20, -11, 9, 18

Arranging the data in ascending order

-20, -18, -11, 9, 10, 18

Mean:

Mean is given by the formula

$Mean=\frac{Sum}{items}$

Items are: 6

$Mean = \frac{-20-18-11+9+10+18}{6}\\= \frac{-12}{2}\\= -2$

Mode:

Mode is the most frequent value in the data. So,

As there is no value repeated in the data. There is no mode

Median:

Median is the middle value of the data. As the no. of data value are even,

the average of middle 2 values is mode.

Note that the data has to be arranged in ordered to find median

Here,

$Median = \frac{-11+9}{2}\\=\frac{-2}{2}\\= -1$

Range:

Range is the difference between the largest and smallest value of the data

Here

Largest value = 18

Smallest value = -20

So,

$Range = Largest\ value-Smallest value\\= 18-(-20)\\= 18+20\\=38$

Hence,

Mean = -2

Median = -1

Mode = Nil

Range = 38

Keywords: Data, Median

Learn more about statistics at:

#LearnwithBrainly

3 0

3 years ago

Please help me this is urgent I will mark brainliest ​

Please help me this is urgent I will mark brainliest