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2 years ago

An airplane flies about 600 miles per hour (mph). Which is the dependent variable in this situation?

Mathematics

1 answer:

Yuri [45]2 years ago

6 0

Answer:

The distance flown

Step-by-step explanation:

The distance flown is dependent on the speed of the plane

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Ali graphs the function f(x) = -(x + 2)2 - 1 as shown.

lyudmila [28]

The Answer:

The axis of symmetry should be x=2

Step-by-step explanation:

The question clearly states x+2 meaning it shouldn't be - 2

Not entirely sure

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2 years ago

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5cosx -2sin(x/2) +7=0<br>Help me to find x step by step<br>pls

miskamm [114]

Answer:

x = 180

Step-by-step explanation:

First, you need to know

1. Double-angle formula:

cos(2x) = $cos^{2}x - sin^{2}x$

2. Pythagorean identity:

$cos^{2}x + sin^{2}x = 1$

Back to your problem, replacing the variable by the above:

$5cosx-sin\frac{x}{2}+7 = 0$

$5(cos^{2}\frac{x}{2}-sin^{2}\frac{x}{2}) - 2sin\frac{x}{2} + 7 = 0$ By Double-angle formula

$5(1 - 2sin^{2}\frac{x}{2}) - 2sin\frac{x}{2} + 7 = 0$ By Pythagorean identity

Given $y = \frac{x}{2}$

$5(1-2sin^{2}y) - 2siny + 7 = 0$

$10sin^{2}y+2siny-12=0$

$5sin^{2}y+siny-6=0$

$(5siny + 6)(siny - 1)=0$ , we know -1 < sinx < 1, for every x ∈ R

$siny = 1, y =90$

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

$x = 180$

8 0

2 years ago

What does to solve the equation x - 2 = 9 (hint: you would need to subtract 2) form both sides of the equation am I correct?

geniusboy [140]

Answer:

I think the answer to X = 11.

Step-by-step explanation:

X - 2 = 9, correct?

11 - 2 = 9.

I hope this can help! Please correct me

if i got it wrong. :D

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2 years ago

Hiring the bus will cost $25 a day for the driver, $2 per mile traveled, and $3 for gas per mile traveled. The field trip will t

Aneli [31]

The answer: 25+8+3(2)

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2 years ago

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Hey! Can someone please answer this?

Lelechka [254]

This picture should provide a full answer. What I did was rearrange the equation to get Tan(x) on one side, then in order to get rid of the Tan, I used Arctan, which got us the final answer.

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2 years ago

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