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timama [110]
3 years ago
5

At a snack stand, drinks cost $1.50. Write the expression that could be used to find the total cost in dollars of d drinks?

Mathematics
2 answers:
vichka [17]3 years ago
7 0
1.50 times x because the other number is unknown
max2010maxim [7]3 years ago
5 0

Equation:

$1.50 * x = d

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Savatey [412]
100+25x = y

Sorry gotta get 20 characters ignore this
6 0
3 years ago
If csc ( x ) = 4, for 90 ∘ < x < 180, then sin ( x 2 ) = ? cos ( x 2 ) = ? tan ( x 2 ) = ?
svetlana [45]

Answer:

I'm assuming where you wrote x2, you meant 2x.

Anyway, if csc (x) = 2, since csc(x) = 1/sin(x), we know that 1/sin x = 2, so sin (x) = 1/2. Since sin2x + cos2x = 1, cos2x = 1 - sin2x, so cos x = √1 - sin2x. In this case, cos x = √ 1 - (1/2)2 = √(3/4) = (√3)/2. Finally, since sin x = opp / hyp , cos = adj/ hyp: sin x / cos x = (opp/hyp)/(adj/hyp) = opp/adj = tan x. So this means that tan x = sin x / cos x = 1/2 / √ 3 / 2 = 1/√3 = √3 / 3

At this point, all that is necessary is to use the double angle formulas for sin, cos, and tan.

sin (2x) = 2 sin x cos x = 2 (1/2) (√3/2) = √3 / 2

cos (2x) = cos2x - sin2x = (√3/2)2 - (1/2)2 = 3/4 - 1/4 = 1/2

tan (2x) = 2 tan x / (1 - tan2x) = 2 (√3 / 3) / ( 1 - (√3/3)2) = 2/√3 / (1 - 1/3) = 2/√3 / (2/3) = 3/√3 = √3

To sum up, sin (2x) = √4 / 2, cos (2x) = 1/2, and tan(2x) = ✓3.

Step-by-step explanation:

BRAIN LY FAST

MARK A BRAINLESS

5 0
2 years ago
A bag of candy weighs 25.62 ounces. A group of 4 friends is going to share the bag of candy equally.
saul85 [17]
Part A: 6.2
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PArt C: The estimate was close to the real answer
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If a taxpayer has an adjusted gross income (AGI) of $27.000, donates $3500
mart [117]

Answer:

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
May someone please help me with this
slega [8]
This is confusing trying PHOTOMATH
8 0
3 years ago
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