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kondaur [170]
3 years ago
11

A rectangular plot of ground is 10 meters longer than it is wide. Its area is 20,000 square meters. What equation will help me f

ind the dimensions?. Let w=width
Mathematics
2 answers:
seropon [69]3 years ago
6 0

Answer:

20,000 = 10w + w².

Step-by-step explanation:

Given  : A rectangular plot of ground is 10 meters longer than it is wide. Its area is 20,000 square meters.

To find :  What equation will help me find the dimensions?. Let w=width.

Solution : We have given

Let Width = w

Length of rectangular plot = 10 + w .

Area = length * width .

plugging the values

20,000 =( 10+w) * w .

20,000 = 10w + w².

Therefore, 20,000 = 10w + w².

Nadya [2.5K]3 years ago
4 0
A = L * W
A = 20,000
L = W + 10

20,000 = W(W + 10)....or 20,000 = W^2 + 10W
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True or false: Exterior angles are the angles created when the sides of the triangle are shortened.(1 point)
Lady_Fox [76]

Answer:

This statement is false. Exterior angles are the angles created when the sides of the triangle are extended.

Step-by-step explanation:

Exterior angles are the angle between the any reference side and line extended from the adjacent side.

the sum of exterior and interior angle is 180 as it lies on a straight line.

_______________________________________________

based on above definition the given statement becomes false.

Hence, correct choice is option third

This statement is false. Exterior angles are the angles created when the sides of the triangle are extended.

5 0
3 years ago
An item priced at $10.20 has a sales tax of $0.41.Find the sales tax rate expressed as a percent.
torisob [31]
0.41 / 10.20 = 0.040.....multiply by 100 to get ur percent = 4%
3 0
3 years ago
Someone please help me
Afina-wow [57]

Answer:

pictures is not showing

5 0
2 years ago
Read 2 more answers
Urgent!
boyakko [2]

Step-by-step explanation:

18.

the last one.

-4.9t² + 24.5t + 117.6 = 0

the ball starts at 117.6 meters height. then, during the first seconds the thrust upwards is adding height, until finally, with more and more seconds passing, gravity will win with a vengeance and pulls the ball down faster and faster than any other force in any other direction.

19.

the general solution for a quadratic equation

y = ax² + bx + c

is

x = (-b ± sqrt(b² - 4ac))/(2a)

in our case

x = t

a = -4.9

b = 24.5

c = 117.6

t = (-24.5 ± sqrt(600.25 - -4×4.9×117.6))/-9.8 =

= (-24.5 ± sqrt(600.25 + 2304.96))/-9.8 =

= (-24.5 ± sqrt(2905.21))/-9.8 = (-24.5 ± 53.9)/-9.8

t1 = (-24.5 + 53.9)/-9.8 = -3

t2 = (-24.5 - 53.9)/-9.8 = 8

a negative time does not make any sense, so the real solution is : the ball reached the ground after 8 seconds.

20.

now the equation is

-4.9t² + 24.5t + 117.6 = 49

but this is quickly transformed again into a "= 0" equation :

-4.9t² + 24.5t + 68.6 = 0

t = (-24.5 ± sqrt(600.25 - -4×4.9×68.6))/-9.8 =

= (-24.5 ± sqrt(600.25 + 1344.56))/-9.8 =

= (-24.5 ± sqrt(1944.81))/-9.8 = (-24.5 ± 44.1)/-9.8

t1 = (-24.5 + 44.1)/-9.8 = -2

t2 = (-24.5 - 44.1)/-9.8 = 7

again, negative time does not make sense.

the ball will be at 49 m height after 7 seconds.

5 0
2 years ago
Pls, look at picture for the question.
brilliants [131]
-6.8 is the answer.
8 0
2 years ago
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