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2 years ago

THIS QUESTION IS GOING TO SAVE MY LIFE:

Mathematics

2 answers:

mel-nik [20]2 years ago

8 0

Answer:

Step-by-step explanation:

(1) The ratio 24.8 to 13.4 can be rewritten as 24 8/10 or 248/10 to 13 4/10, or, after simplification, 248/10 to 134/10. This version of the given ratio reduces to 248/134, or 124/67. This last version cannot be reduced further.

(2) The ratio 1.5 to 4.5 is equivalent to 3(.5) / 3(1.5), or 1/3.

OleMash [197]2 years ago

8 0

1) 124/67.

2/1/3.

Good luck !! Hope it helps!

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An arched drainage culvert can be modelled by the function:

Zanzabum

Substitute 136.5 for y.

$136.5=\frac{x(191-x)}{60}$

$8190=x(191-x)$

$8190=191x-x^{2}$

$x^{2} -191x+8190=0$

Compare this equation with $ax^{2} +bx+c=0$

a = 1, b = - 191, c = 8190

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

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

$x=\frac{191+\sqrt{191^{2}-4(1)(8190) } }{2}$ or

$x=\frac{191-\sqrt{191^{2}-4(1)(8190) } }{2}$

$x=\frac{191+\sqrt{36481-32760 } }{2}$ or

$x=\frac{191-\sqrt{36481-32760 } }{2}$

$x=\frac{191+\sqrt{3721 } }{2}$ or

$x=\frac{191-\sqrt{3721 } }{2}$

$x=\frac{191+61}{2}$ or

$x=\frac{191-61}{2}$

$x=\frac{252}{2}$ or

$x=\frac{130}{2}$

x = 126 or x = 65

Hence, the points on the curve are (65, 136.5) and (126, 136.5).

The width of the air space is the distance between these points.

Width = $\sqrt{(x_{2}- x_{1})^{2} +( y_{2}- y_{1}) ^{2}$

= $\sqrt{(126- 65)^{2} +(136.5-136.5) ^{2}$

= 126 - 65

= 61

Hence, width of the air space is 61m.

5 0

3 years ago

I tried the two bottom ones and it’s wrong

Vikentia [17]

Answer:

Step-by-step explanation:

The answer is The cook need 1/12

Why??

3/4 -2/3 = 1 /12

Therefore , the cook need 1/12 heheh Send Love:#

4 0

2 years ago

How do I do this!!!!!

-BARSIC- [3]

Pyramid Surface Area = (½ * Perimeter of Base * Slant Height) + Base Area

Base perimeter = 4 * 18 = 72 inches
Base Area = 18*18 = 324 square inches

Pyramid Surface Area = (.5 * 72 * 12) + 324
Pyramid Surface Area = 432 + 324
Pyramid Surface Area = 756 square inches

Source:
http://www.1728.org/volpyrmd.htm

4 0

3 years ago

Al's Rentals charges $25 per hour to rent a sailboard and a wetsuit. Wendy's Rentals

zhuklara [117]

Answer:

x=3

Step-by-step explanation:

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3 years ago

Rational numbers are numbers that can be written as ratios of two integers where zero is the denominator.

uysha [10]

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