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3 years ago

In a discus competition, an athlete threw the discus 63.37 meters, and 63.7 meters.Order the distances from least to greatest

Mathematics

1 answer:

andriy [413]3 years ago

5 0

62.95, 63.37, 63.7 is least to the greatest.

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The dimensions of a rectangle can be given by x+9 and x-2. If the area is 60ft^2, what is the value of X?

Anestetic [448]

Answer:

$x=5$

Dimensions of rectangle are

W=14 and L = 3

Step-by-step explanation:

Are of rectangle is

$A=WL$ --------(1)

Where W is width and L is length of rectangle

Here

A=60

W=x+9

L=x-2

Substituting values in equation (1)

$60 = (x+9) (x-2)$

$60 = x^{2} +9x -2x -18$

$x^{2} + 7x - 78 = 0$

Using quadratic formula

$x=\frac{-b +/- \sqrt{b^{2} - 4ac} }{2a}$

Here a=1, b=7 and C=-78

$x= \frac{-7 +/- \sqrt{7^{2} - 4(-78)} }{2}$ (Here +/- = ±)

$x= \frac{-7 +/- \sqrt{ 49 + 312} }{2}$

$x= \frac{-7 +/- \sqrt{ 361} }{2}\\x= \frac{-7+/- 19}{2}$ $x= \frac{-7 + 19 }{2} \ \ and \ \ x= \frac{-7-19 }{2}$

$x= \frac{12 }{2} \ \ and \ \ x= \frac{-26 }{2}$

$x= 5 \ \ and \ \ x= -13$

x cannot be negative (Negative x means -ve dimensions of rectangle). Therefore

$x=5$

Dimensions of the rectangle are

$W=x+9 = 5+9 = 14$

$L= x - 2 = 5-2 = 3$

5 0

3 years ago

The sum of 2 numbers is 19 the differance is 3

Scilla [17]

Answer:

8 , 11

Step-by-step explanation:

x + y = 19

x * y = 3

2x = 16 --> x = 8

8x = 8, ---> y = 4 = 11

Please give me BRAINLIEST and THANKS lol

4 0

3 years ago

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Sarah bought a TV for $250. Three years later she sold it for $180. Work out her percentage loss.

Anna71 [15]

70/250 x 100
Answer: 28%

3 0

3 years ago

If one out of 12 students at a school share a locker how many share a locker in a school of 456

Kobotan [32]

Answer:

456/12= 38 means 38 kids share a locker

Step-by-step explanation:

3 0

3 years ago

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What is the 135th digit to the right of the deciaml point in the repeating decimal 0.428571

Vikki [24]

0.428571428571

135/6 = 22 remainder 3
The 3rd digit is 8

Therefore, the 135th digit to the right of the decimal point is 8.

3 0

3 years ago