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3 years ago

8

A pillar 4 feet tall casts a shadow 2 feet long on the ground. If the pillar was 14 feet tall, how many feet in length would the

shadow be?

2 answers:

statuscvo [17]3 years ago

4 0

Answer:

i guess it is a 7 foot shadow

Step-by-step explanation:

DanielleElmas [232]3 years ago

4 0

Weird question

Step-by-step explanation:

I don't get the question

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Find the roots of h(t) = (139kt)^2 − 69t + 80

Sonbull [250]

Answer:

The positive value of $k$ will result in exactly one real root is approximately 0.028.

Step-by-step explanation:

Let $h(t) = 19321\cdot k^{2}\cdot t^{2}-69\cdot t +80$ , roots are those values of $t$ so that $h(t) = 0$ . That is:

$19321\cdot k^{2}\cdot t^{2}-69\cdot t + 80=0$ (1)

Roots are determined analytically by the Quadratic Formula:

$t = \frac{69\pm \sqrt{4761-6182720\cdot k^{2} }}{38642}$

$t = \frac{69}{38642} \pm \sqrt{\frac{4761}{1493204164}-\frac{80\cdot k^{2}}{19321} }$

The smaller root is $t = \frac{69}{38642} - \sqrt{\frac{4761}{1493204164}-\frac{80\cdot k^{2}}{19321} }$ , and the larger root is $t = \frac{69}{38642} + \sqrt{\frac{4761}{1493204164}-\frac{80\cdot k^{2}}{19321} }$ .

$h(t) = 19321\cdot k^{2}\cdot t^{2}-69\cdot t +80$ has one real root when $\frac{4761}{1493204164}-\frac{80\cdot k^{2}}{19321} = 0$ . Then, we solve the discriminant for $k$ :

$\frac{80\cdot k^{2}}{19321} = \frac{4761}{1493204164}$

$k \approx \pm 0.028$

The positive value of $k$ will result in exactly one real root is approximately 0.028.

7 0

2 years ago

HELPPPPPPPPPPPPPPPPPPPPPPPPPPPPP Which statement would be LEAST LIKELY to occur based on the probability?

N76 [4]

Answer:

i believe the answer is 1/9, sry if im wrong

Step-by-step explanation:

4 0

2 years ago

Whats the gcf for 10y5+30y3-15y

Nataly [62]

Answer:

1, see the picture below, I used a calculator!

I hope this helps!!

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2 years ago

If the base of a right angle triangle is 8<br>cm and the hypotenuse is 17 cm find its<br>area.

damaskus [11]

The area of the triangle is 60 cm

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2 years ago

Read 2 more answers

steven is a jet airplane mechanic and works at an hourly rate of 36 and earns time and a half if he works any overtime. last wee

natita [175]

Answer:

Straight time pay: 1332

Overtime pay: 432

Total pay: 1764

Here u go

4 0

2 years ago