4 years ago

Please please someone help me

Mathematics

1 answer:

dolphi86 [110]4 years ago

3 0

Answer:

minimum is -3,0

Step-by-step explanation:

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A dance academy charges $24 per class and a one time registration fee of $15. A student paid a total of $687 to the academy. Fin

dem82 [27]

Answer:

The student took 28 classes

Step-by-step explanation:

What I did was minus $15 from the $687 total, cause $15 is only a one time registration fee, then 687-15=672, so then I divided 672 by the cost per class, so $24, 672 divided by 24 equals to 28, so the student took 28 classes.

5 0

3 years ago

If cos A = 3 over 11, then which of the following is correct?

ziro4ka [17]

Answer: The answer is (a) sec A = 11 over 3.

Step-by-step explanation: Given that Cosine of an angle 'A' is 3 over 11,

i.e.,

$\cos A=\dfrac{3}{11}.$

And we need to find which one of the given four options is correct.

We have the following relations between cosine, secant and cosecant of an angle from trigonometry.

$\sec A=\dfrac{1}{\cos A}~~\textup{and}~~\csc A=\dfrac{1}{\sqrt{1-\cos^2 A}}.$

Therefore,

$\sec A=\dfrac{11}{3}$

and

$\csc A=\dfrac{1}{\sqrt{1-\frac{9}{121}}}=\dfrac{1}{\sqrt{\frac{112}{121}}}=\dfrac{11}{4\sqrt 7}.$

Thus, the correct option is (a) sec A = 11 over 3.

3 0

4 years ago

7 times as much as the sum of 1/3 and 4/5

SCORPION-xisa [38]

2 more because 5 is 5-3 = 2 so the answer is 5/2

8 0

3 years ago

INEQUALITIES!!! PLEASE HELP!!!

marta [7]

1) Third option

2) Third option

3) First option

4) Third option

5) Third option

6) 2y - 2 < 14

2y < 16

y < 8 (Third option)

7) 25 > 1 - 3d

24 > -3d

-8 < d (Second option)

Hope this helps! ;)

6 0

4 years ago

Need help ASAP. I suck at math.

Lorico [155]

1-wv
2-vu
3-uw
Are the answers

8 0

3 years ago