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3 years ago

11

Suppose y varies as x, and y=16 wen x=8. find y when x=16

1 answer:

aleksandrvk [35]3 years ago

5 0

I need an equation to find the value of each one...

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Carrie finishes her supper at 8:45 P.M. Then she spends 45 minutes doing her homework and 15 minutes getting dressed for bed.

Fed [463]

Answer:

The answer is 9:45

Step-by-step explanation:

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3 years ago

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Can someone help with the last 2?

leonid [27]

Answer:

x > 6 and x ≤ 10

Step-by-step explanation:

You have to sleep for more than 6 hours, which means it is greater than and can not be equal to because it has to be more than 6 hours.

For the second problem, at most includes the 10th person so x is less than or equal to 10.

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Find my number if 3/8 of it is 24.

Dmitriy789 [7]

Answer:

The number is 32

Step-by-step explanation:

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2 years ago

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NGC is a hot air balloon in the sky from her spot on the ground. The angle of elevation from Angie to the balloon is 40°. If she

Goshia [24]

Answer:

The distance from hot air balloon to the ground $AC=50.1457 ft$ .

Step-by-step explanation:

Labelled diagram of given scenario is shown below.

Given that,

An angle of elevation of Hot air balloon by Angie is $40$ °.

When she stepped back $200 ft$ then angle of elevation was $10$ °.

Height of Angie is $5.5 ft$ .

To find: How far off the ground is a hot air balloon.

So, from figure

Height of Angie $(BC) = 5.5ft$

In triangle Δ $ABD$ ,

⇒ $tan {40\si {\degree}} = \frac{AB}{BD}$

⇒ $AB = tan (40) \times BD$ ....................(1)

Now, In triangle Δ $ABE$

⇒ $tan (10)= \frac{AB}{200+BD}$

⇒ $AB = tan(10)\times (200+BD)$

Here, substituting the value $AB$ from Equation (1) we get,

$tan(10)\times (200+BD)= tan(40)\times BD$

$tan(10)\times 200+tan(10)\times BD= tan(40)\times BD$

⇒ $BD\times (tan(40)-tan(10))=tan(10)\times 20$

⇒ $BD\times 0.6628 = 35.2654$

⇒ $BD = \frac{35.2654}{0.6628} =53.2067 ft$

Now, finding the value of $AB$ from equation (1)

$AB= tan(40)\times 53.2067=0.8391\times 53.2067$

$AB=44.6457 ft$

Therefore Length of $AC= AB+BC$ = $(44.6457 + 5.5) ft$

$AC=50.1457 ft$ .

Hence,

The distance from hot air balloon to the ground $AC=50.1457 ft$ .

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