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3 years ago

The price of a USB memory stick selling at a 21% discount off its marked price (m) is _____

2 answers:

7 0

I believe it would be .21m. So for example.The memory stick is sold normally for $14, so to plug it into the equation it would be: .21(14), which gives you the discount of $2.94. Subtract that amount from the original price, and that gives you the sale price. .21(14)=2.94 14-2.94=11.06~~~~~Sale price

Roman55 [17]3 years ago

4 0

Answer:

1. 0.79m

2. 1.21m

3. 7/5m

4. 3/5m

Step-by-step explanation

Make me the brainliest answer.

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Set up the integral that uses the method of disks/washers to find the volume V of the solid obtained by rotating the region boun

Blababa [14]

Answer:

$a)\: \frac{3}{2} \pi$

$b) \:\frac{47}{5} \pi$

Step-by-step explanation:

$y=3\sqrt x,\:\:y=3,\:\:x=0$

a) about the line y = 3

$3\sqrt x=3$ ⇒ $x = 1$ is the intersection point

So,

$V=\int\limits^1_0\pi(3-3\sqrt x)^2\:dx=\pi\int\limits^1_0(9-18\sqrt x+9x)\:dx=\\\\=\pi(9x-12x^{3/2}+9/2x^2)|^1_0=\pi(9-12+9/2)=\frac{3}{2} \pi$

b) about the line x = 5

$y=3\sqrt x$ ⇒ $x=y^2/9$

So,

$V = \int\limits^3_0\pi([5-0]^2-[5-y^2/9]^2)\:dy=\pi\int\limits^3_0(25-25+10y^2/9-y^4/81)\:dy=\\\\=\pi(10y^3/27-y^5/405)|^3_0=\pi(10-3/5)=\frac{47}{5} \pi$

8 0

4 years ago

What do you do when the x is a negative but the answer for x is a positive?

Alecsey [184]

Just switch the negative sign over to the answer. so if you had -x = 6, then just switch the sign over to the 6. You would have the answer of x=-6, which is the same thing as -x=6

4 0

3 years ago

When and image is dilated, the area of the new image is the [blank] of the [blank] of the original figure and the [blank] factor

finlep [7]

Answer: ummmmmmmmmmm smatrofhdkbdjbd

Step-by-step explanation:

5 0

3 years ago

Which table has a constant of proportionality between y and x of 1/4

Maru [420]

Answer: A

Step-by-step explanation:

In order to find constant of proportionality, you have to use the equation, x(?)=y

The ? being the number to plug in, which would be 1/4 in this case. 8 times 1/4 is equal to 2 and so on.

8 0

3 years ago

I need help with all the questions please answer fast thanks

Reil [10]

Donovan got 39 out of 50......39/50 = 78%
Marci's score was 10 percentage points higher.....78% + 10% = 88%
88% of 50 = 0.88(50) = 44....so Marci answered 44 correctly. That is (44 - 39) = 5 questions more then Donovan.

5 0

4 years ago