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4 years ago

I need help I need this answer asap

Mathematics

1 answer:

lesya [120]4 years ago

8 0

P= s+t+r
p - t - r =s
S = p-t-r

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Ella purchased a game that was on sale for 12% off. The sales tax in her county is 6%. Let y represent the original price of the

Vera_Pavlovna [14]

y: original price (in dollars)

0.12y: amount of discount (in dollars)

sale price: y - 0.12y = 0.88y

sales tax on this sale price: (0.06)(0.88y)

final cost: 0.88y + (0.06)(0.88y) = 0.88y(1+0.06) = 0.9328y

7 0

4 years ago

An object oscillates 4 feet from its minimum height to its maximum height. The object is back at the maximum height every 3 seco

bulgar [2K]

Answer:

$y=2\text{cos}((\frac{2\pi}{3})t)$

Step-by-step explanation:

We have been given that an object oscillates 4 feet from its minimum height to its maximum height. The object is back at the maximum height every 3 seconds. We are asked to find the cosine function that can be used to model the height of the object.

We know that standard form of cosine function is $y = A\cdot \text{cos}(Bt-C)+D$ , where,

|A| = Amplitude,

Period = $\frac{2\pi}{|B|}$ ,

C = Phase shift,

D = Vertical shift.

Since distance between maximum and minimum is 4, therefore, amplitude will be half of it, that is, $A = 2$ .

Since objects gets back to its maximum value in every 3 seconds, therefore, period of the function is 3 seconds. We know that period is given by $\frac{2\pi}{|B|}$ , therefore, we can write $\frac{2\pi}{|B|}=3$ , therefore, $B = \frac{2\pi}{3}$ .

We haven't been given any information about phase and mid-line, we can assume the values of C and D to be zero .

Therefore, our function required function would be $y=2\text{cos}((\frac{2\pi}{3})t)$ .

6 0

4 years ago

What is 0.83 x 52 can someone show me how to get it

andreev551 [17]

Answer:

= 43.16

Step-by-step explanation:

1. 83 x 52

2. = 4,316

3. There are 2 numbers after the decimal

4. you add the decimal the number of times the decimal is away from the number before

8 0

4 years ago

Read 2 more answers

What is the change in temperature from -8°F to 14°F?

vova2212 [387]

The change in temperature from -8F to 14F would be 22F because -8 to 14 would require subtraction so 14 - (-8) is 22 and -8 + 22 = 14 so its true.

Answer: 1) 22F.

3 0

3 years ago

Read 2 more answers

What principal amount would yield an interest of $36 in 3 years at 3%?<br> P=

luda_lava [24]

Answer: Let principle sum be x

Time = 3 years

Rate = 3% per annul

SI = $36

SI = \frac{P*R*T}{100}

36 = \frac{x*3*3}{100}

x = 36* \frac{100}{9}

x = 400

So the sum that would yield interest of $36 is $400

Step-by-step explanation:

4 0

3 years ago