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brilliants [131]
3 years ago
9

The fastest NASCAR qualifying speed is 313 feet per second. How many miles per hour is that?

Mathematics
1 answer:
Semmy [17]3 years ago
3 0

Answer:

213.41 mph.

Step-by-step explanation:

Multiply by 3600 ( seconds in an hour) and divide by 5280 (feet in a mile).

= 213.41 mph.

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Each rectangle has its area written inside and the expression mod
dangina [55]

Answer:

Length of the boxes are 17 in, 35 in, 17 in.

Step-by-step explanation:

The given question is incomplete: please find the complete question in the attachment.

A). From Box - (1)

Area of the box = 289 in.²

Expression that denotes the area of the box = 36x² - 12x + 1

So, 36x²- 12x + 1 = 289

(6x)² - 2(6)x + (1)² = (17)²

(6x - 1)² = (17)² [ Since (a² - 2ab + b²) = (a - b)²]

Given box is a square having sides = (6x - 1) in.

∵ (6x - 1)² = 17

⇒ 6x = 18

⇒ x = \frac{18}{6} = 3

Now length of the sides = (6x - 1) = 17 in.

B) Box - (2)

Similarly, 25x²- 50x + 25 = 1225

(25x² - 50x + 25) = (35)²

(5x - 5)² = (35)²

5(x - 1) = 35 ⇒ x = 8

Here length of one side of the box is 5(x - 1) = 5(8 - 1) = 35in.

C). Box - (3)

49x² - 56x + 16 = 289

(7x)² - 2×(7x)(4) + 4²= (17)²

(7x - 4)² = (17)²

Length of each side = (7x - 4) in.

From, (7x - 4)² = (17)²

7x - 4 = 17

⇒ x = \frac{21}{7}

⇒ x = 3

Therefore, length of each side of the box = (7x - 4) = 17 in.

6 0
2 years ago
What is x and what are the steps I take to find X?
slega [8]
X is a variable to find it you need to isolate it(get it by itself)

3 0
3 years ago
HELPPPPPPP!!!!!!!!!!!!!
Sonbull [250]
14.23 is your answer!!!!!!!
4 0
3 years ago
Read 2 more answers
1/3 of a number is 12 less than the number itself
natulia [17]
Let "x" be a substitute for "a number"

1/3(x)=x-12    Multiply by 3
x=3x-36         Get n onto the same side of the equation
2x=36            Divide by 2
x=18

That's your answer.
5 0
3 years ago
What is the diameter of a cone if the volume is 134 and the height is 8
patriot [66]

Answer:

times it

Step-by-step explanation:

5 0
3 years ago
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