2 years ago

The Unit Circle

Mathematics

1 answer:

Makovka662 [10]2 years ago

8 0

Answer:

B. (0.87, 0.48)

Step-by-step explanation:

I calculated it logically

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Y=-x-4

aliina [53]

Answer:

(-4 , 0)

Step-by-step explanation:

Graph attached

5 0

3 years ago

Simplify the following expression.

o-na [289]

Answer:

i dont know what you mean but

3x(4x-3) simplified is 12x - 4 or 12x+(-4)

3 0

3 years ago

Which ordered pair is a reflection of (3, 7) across the y-axis?

stich3 [128]

If its a reflection across the y axis the x value is reflected and the y value stays the same, so (-3,7)

4 0

3 years ago

After a bride has interviewed 7 DJs to play at her wedding, her fiance tells her she needs to narrow it down to 4 DJs. In how ma

Alex17521 [72]

Answer:

840

Step-by-step explanation:

Given

$DJs = 7$

$To\ pick = 4$

Required

Determine the number of rankings

The term "ranking" as used in this question implies permutation and the required is calculated using:

$^nP_r = \frac{n!}{(n-r)!}$

Where

$n = 7$

$r = 4$

So:

$^nP_r = \frac{n!}{(n-r)!}$

$^7P_4 = \frac{7!}{(7-4)!}$

$^7P_4 = \frac{7!}{3!}$

$^7P_4 = \frac{7 * 6 * 5 * 4 * 3!}{3!}$

$^7P_4 = 7 * 6 * 5 * 4$

$^7P_4 = 840$

<em>Hence, number of ranking is 840</em>

7 0

3 years ago

Nick paid 2.94 in sales tax on an item that cost $42.00 at the rate how much he pay in sales tax on an item that cost $58.00 bef

ruslelena [56]

$2.93/$42= about 7% tax
$58*7%= $<span>4.06 in tax</span>

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3 years ago