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USPshnik [31]
4 years ago
15

The length of a rectangle is 10m greater than the width. The area is 24m^2

Mathematics
1 answer:
Ivan4 years ago
5 0

Answer:

length: 12m

width: 2m

Step-by-step explanation:

24 = a*w

a = w+10

then:

24 = (w+10)w

24 = w*w + 10*w

24 = w² + 10w

0 = w² + 10 - 24

w = {-10±√((10²)-(4*1*-24))} / (2*1)

w = {-10±√(100+96)} / 2

w = {-10±√196} / 2

w = {-10±14} / 2

only positive numbers:

w = {-10+14}/2

w = 4/2

w = 2m

a = w+10

a = 2 + 10

a = 12m

Check:

24 = 12*2

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LekaFEV [45]

Answer:

40 girls

Step-by-step explanation:

if you multiply 5 times 10, then you have to multiply the other side by 10 too. So 5 times 10 equals 50, and 4 times 10 equals 40.

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4 0
3 years ago
In a right triangle ΔABC, the length of leg AC = 5 ft and the hypotenuse AB = 13 ft. Find the length of the angle bisector of an
Sauron [17]

Answer: the length of the angle bisector of angle ∠A is 6 ft

Step-by-step explanation:

The diagram of the right angle triangle ABC is shown in the attached photo

Looking at triangle ABC,

cos θ = adjacent side/hypotenuse side

cos θ = 5/13 = 0.3846

θ = 67.38 degrees

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θ/2 = 67.38/2 = 33.69 degrees

Therefore,

Cos 33.69 = 5/AD

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AD = 5/Cos 33.69 = 5/0.832

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3 0
3 years ago
Simplest form of -1 5/8 divided by 5 8/9
Crank

Answer:

the answer is -117/424, hope this helps :)

7 0
3 years ago
1) There are 25 rows of seats on a concert hall: 25 seats are in the 1st row, 28 seats on the 2nd row, 31 seats on
Yuliya22 [10]

Answer:

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Step-by-step explanation:

6 0
4 years ago
35 points.Helpppp with explanation.​
Katena32 [7]

Hey there! :D

The midpoint and the outside line are symmetrical to eachother, 2(BF)= AE

Two midpoint segments equals one AE segment.

So, use the representation above and plug in the numbers.

2(23)= 5x -4

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Add 4 to both sides.

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I hope this helps!

~kaikers <3

7 0
3 years ago
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