Make sure to pick ALL and It needs To BE CoRRECt

Mathematics

1 answer:

umka2103 [35]3 years ago

4 0

Answer:

(a): 9x + 45

Option A, 9(x + 5) because it distributes into 9x + 45

Option B, 9 * x + 9 * 5 because it multiplies into 9x + 45

(b): 13 + 9y - 3 - y

Option D, 8y + 10 because it combines into this number

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jocelyn bought 2 sweaters for the same price. she paid 23.56,including sales tax of 1.36 and a 5.00 discount coupon. what was th

wel

Number of sweaters bought by Jocelyn = 2
Price of the 2 sweaters including tax and discount coupon = 23.56
Amount of ales tax taken = 1.36
Amount of discount coupon = 5.00
Then
Price of 2 sweaters before tax = 23.56 - 1.36
   = 22.20
Then
Price of the sweater before discount coupon was applied = 22.20 + 5.00
   = 27.20
So
Price of 1 sweater before tax and coupon discount = 27.2/2
   = 13.6
So the price of 1 sweater before tax and coupon discount is 13.6.

6 0

3 years ago

Marcus rented a movie for 4$ and some video games for $6 each he paid $22 how many games did he rent

galina1969 [7]

$22 - $4 (for the movie) = $18.

$18 / $6 (per game) = 3 games

8 0

3 years ago

Read 2 more answers

If i'm getting 20% commission from a monthly sale of $800000 what is my 30% in month of sale be?

Oksana_A [137]

Answer:

Your commission check for the 20% would be $160,000 and your 30% would be $240,000.

Step-by-step explanation:

To find each of these, multiply the total number of sales by the percentage of the commission.

$800,00*20% = $160,000

$800,000*30% = $240,000

6 0

3 years ago

Csc (2sin^-1(-12/13)) that is 2 times inverse sin of -12/13

german

Answer: $-\frac{169}{120}$

I'm assuming you mean this:

$cosec(2sin^{-1}(\frac{-12}{13}))$

Recall what the cosecant function represents. It is the reciprocal of a sine function, and is often written in this form:

$\frac{1}{sinx}$

So, using the sine relationship:

$cosec(2sin^{-1}(\frac{-12}{13})) = \frac{1}{sin(2sin^{-1}(\frac{-12}{13}))}$

Let $u = sin^{-1}(\frac{-12}{13})$
$cosec(2sin^{-1}(\frac{-12}{13})) = \frac{1}{sin(2u)}$
$= \frac{1}{2sinu \cdot cosu}$
$= \frac{1}{2sin(sin^{-1}(\frac{-12}{13})) \cdot cos(sin^{-1}(\frac{-12}{13}))}$
$= \frac{1}{\frac{-24}{13} \cdot \sqrt{1 - (\frac{-12}{13})^{2}}}$
$= \frac{1}{\frac{-24}{13}} \cdot \frac{1}{\sqrt{1 - \frac{144}{169}}}$
$= -\frac{13}{24} \cdot \frac{1}{\sqrt{\frac{25}{169}}}$
$= -\frac{13}{24} \cdot \frac{1}{\frac{5}{13}}$
$= -\frac{13}{24} \cdot \frac{13}{5}$
$= -\frac{169}{120}$