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Hitman42 [59]
3 years ago
7

The perimeter of a rectangle is 40 m. The length is 4 m more than three times the width. Find the length and the width of the re

ctangle.
Mathematics
1 answer:
galina1969 [7]3 years ago
8 0

Answer:

Width = 4 m, Length = 16 m

Step-by-step explanation:

Perimeter = 40

Width = x

Length = 3x + 4

x + x + 3x + 3x + 4 + 4 = 8x + 8

40 - 8 = 32

32/8 = x

x = 4

Width = 4

Length = 16

Please mark as Brainliest, thank you!

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HELPPPPP ME AND ILL GIVE YOU BRAINLIEST
mote1985 [20]

Answer:

s= 60

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Hope this helps

3 0
3 years ago
What is the range of f(x) = 3x + 9?
Lera25 [3.4K]
From the given options we can think that x is
in the exponent of 3.
So, the given function is actually f(x) = 3^x +9
Now, we need to find the range of given
function.
We can see that first term is and exponential
term 3^x and second term is 9
We know that 3^x will always be greater than
O.
Therefore, 3^x +9 would always be greater
than 9.
Therefore, range would be y>9.
So, the correct option is B) (y | y > 9}.
5 0
2 years ago
A ball is thrown from an initial height of 7 feet with an initial upward velocity of 23 ft/s. The ball's height h (in feet) afte
Fantom [35]

Answer:

Step-by-step explanation:

If we are looking for the time(s) that the ball is at a height of 15, we simply sub in a 15 for the height in the position equation and solve for t:

15=-16t^2+23t+7 and

0=-16t^2+23t-8

Factor this however you factor a quadratic in class to get

t = .59 seconds and t = .85 seconds.

This means that .59 seconds after the ball was thrown into the air it was 15 feet off the ground. Then the ball reached its max height, gravity took over, and began pulling it back down to earth. The ball passes the height of 15 feet again on its way down after .85 seconds.

5 0
3 years ago
The difference of a number x and 15 is no less than 11
Leno4ka [110]

Answer:

x = 4; 15 - x > 11

Step-by-step explanation:

Step 1: set up equation

15 - x = 11

- x = 11 - 15

- x = - 4

x = - 4 ÷ - 1

x = 4

For inequality:

15 - x > 11

5 0
3 years ago
Which is the first step in simplifying 4(3x-2)+6x(2-1)
Mazyrski [523]

Answer:

4(3x-2)+6x(2x-1)

12x-8+12^2x-6x

12x-6x +12^2x-8

6x+12^2x-8

5 0
3 years ago
Read 2 more answers
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