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Andrei [34K]
2 years ago
11

For brainiest:)):):):):):)

Mathematics
2 answers:
MatroZZZ [7]2 years ago
8 0
1. 9^7
2. 7^8
3. 10^8
4. 3^9
5. 2^12
Ulleksa [173]2 years ago
8 0
1) 9^7
2) 7^8
3) 10^8
4) 3^9
5) 2^12
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The sum of y and 20 is more than 50
miss Akunina [59]
<span>20 + y > 50 Theres your answer</span>
3 0
3 years ago
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A piece if wire 40cm is bent to form a right angled triangle whose hypotenuse is 17cm long find the other two sides of triangle
hjlf

Answer: 150mm

Step-by-step explanation:

Take the two adjecent sides of the triangle to be x and y and X is the angle opposite the side, x.

From the trigonometric identities for a right-angled triangle, it is known that

x=170sin X and;

y=170cos X

Thus the perimeter of the triangle is given by

170sin X + 170cos X + 170 = 400

170(sin X + cos X) = 400 - 170

170(sin X + cos X) = 230

sin X + cos X = 230/170 = 1.3529

Squaring both sides hence,

sin^2(X) + 2sin X.cos X + cos^2(X) = 1.8304

Recall that sin^2(X) + cos^2(X) = 1 and 2sin X.cos X = sin 2X.

Thus, the former expression gives;

1 + sin 2X = 1.8304

sin 2X = 0.8304

2X = arcsin (0.8304)

2X = 56.14° or (180 - 56.14)° = 56.14° or 123.86° for X existing within a triangle.

X = 56.14/2 or 123.86/2

X = 28.07° or 61.93°

Thus the two adjacent sides are ;

x = 170 sin (28.07) = 80mm

y = 170 cos (28.07) = 150mm

Using the value of 61.93° as X would give the same values but interchanged for x and y.

I hope you find this useful.

5 0
3 years ago
Need ASAP I’ll mark brainliest if right
DedPeter [7]

Answer:

616 in²

Step-by-step explanation:

14 × 14 × 22/7

=> 616

7 0
3 years ago
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Plzzzzz help 3 9/10 is the same as the sum of 3 1/3 and half of a number what is the number​
kirill [66]

Answer:

9/10 = 1/3 + 1/2x

9/10 - 1/3 = 1/2x

LCM of 10 and 3 is 30

( 27 - 10)/30 = 1/2x

17/30 = 1/2x

17 * 2 = 30x

34=30x

34/30= 30x/30

x = 17/15

6 0
2 years ago
the chumas family is driving from north carolina to california on vacation. They drive 330 in 5.5 hours How many hours would it
spin [16.1K]
An easy way is to work out their speed. Speed = distance/time.

First part: Speed = 330/5.5 = 60 mph

Finally, the second part:  time = distance / speed

So time = 720/60 = 12 hours
7 0
3 years ago
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