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Crank
3 years ago
7

Someone explain how this is answer C? Big points!

Mathematics
1 answer:
Snowcat [4.5K]3 years ago
4 0

Answer:

C. x = 15 * sin 18°

Step-by-step explanation:

sin A = Opposite / Hypotenuse

sin 18° = x / 15

x = 15 * sin 18°

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X +y=5, 3x-2y+5=0, this is the question​
Neko [114]

Step-by-step explanation:

x+y=5

3x-2y+5=0

3x-2y= -5

x+y=5...... equation 1

3x-2y= -5....... equation 2

there fore make x the subject of the formula in equation 1

x=5-y.. equation 3

substitute equation three in equation 2

3(5-y)-2y=-5

15y-3y-2y=-5

10y=-5

divide both sides by 10

y=-5/10

y=-½

substitute y into equation 1

x+(-½)=5

x=5+½

x=5½

x=5½,y= -½

4 0
2 years ago
Best Buy is having a HUGE sale. All items are 60% off. How much will you pay for a tv that originally cost $1200 including 5% sa
Whitepunk [10]

Answer:

$480

Step-by-step explanation:

According to the problem, calculation of the given data are as follows,

Original cost including sales tax = $1,200

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So, we can calculate the cost of TV after discount by using following formula:

Cost of TV after discount =  $1,200 - ( $1,200 × 60%)

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= $480

Hence, Cost of TV after discount is $480.

6 0
2 years ago
PLEASE HELP!! WILL MARK BRAINLIEST FOR CORRECT ANSWER!!!
slega [8]

Answer:

Option 2, 3, 4

Step-by-step explanation:

It cannot be the 1st option because a linear function doesn't have an x^{2} and adding an x to an x will not make it squared. ax + by = c is the linear equation.

It can be the 2nd option because the quadratic formula is  f(x) = ax^{2} + bx + c and the middle portion could cancel when adding 2 together.

It can be option 3, because f(x) = ax^{2} + bx + c plus ax + by = c could give you the resulting function f(x) = -3x^{2} +5

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It cannot be option 5 because ax^{2} + bx + c multiplied by ax^{2} + bx + c would give you a function with x^{4}

8 0
3 years ago
Mr. Morgan gives 1 quarter 3 nickels 4 pennies and one $1 to clerk. How much money does Mr. Morgan give the clerk
Goryan [66]
A quarter is worth, 25 cents.
3 Nickels is worth 15 cents.
And 4, pennies is worth 4 cents.
The dollar bill is worth 1.00.
So, you combine the amount which gets you
1.44.

Morgan gave the clerk 1.44$.
3 0
3 years ago
Geometry Question
Dmitrij [34]
Do you still need help on this?
3 0
2 years ago
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