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Salsk061 [2.6K]
3 years ago
9

If Sine (x) = two-fifths and tan(x) > 0, what is sin(2x)?

Mathematics
2 answers:
julsineya [31]3 years ago
8 0

Answer:

B

Step-by-step explanation:

edg 2021

ElenaW [278]3 years ago
4 0

B) \frac{4\sqrt{21}}{25}

Correct on Edge

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Maradee works at Cox's Jewelers for $7.50 per hour with time-and-a-half for all hours over 40 in a week. Thus, her weekly salary
BigorU [14]

Answer:

a) 395.725

b) 378.75

c) 8.8

Step-by-step explanation:

a) S(8.5) = 11.25(8.5) + 300 = 395.625

b) if she worked 47 hrs, that means there were 7 overtime, h=7 and we have to find S(7).

S(7) = 11.25(7) + 300 = 378.75

c) her salary was 398.61, that means S(h) = 398.61 and we have to find h.

398.61 = 11.25(h) + 300

98.61 = 11.25(h)

h = 98.61 / 11.25

h= 8.8

3 0
3 years ago
If theater has 22 rows and the last row has 63 seats and the first row has 27 with the common difference of 3 how many seats are
Inga [223]

Answer:

Step-by-step explanation:

4 0
2 years ago
31,50 is 42% os what number
sergeinik [125]
\frac{31,50}{x}=\frac{42}{100}

The right fraction represents the percentage; 42 over 100 (100 is the total), or 0.42.
The left fraction is the part number over the whole number. The whole number is unknown, so we use 'x'.


\frac{31.50}{x} = \frac{42}{100}\\\\cross\ multiply\\\\31.50\times100=3150\\42\times x=42x\\\\3150=42x\\x=75
Your answer is 75.

3 0
3 years ago
explain fractions and, explain if I don't get fractions what do I need to relearn to understand fractions, if you don't understa
Andru [333]

A fraction is a numerical quantity that is not a whole number.What you probably need to relearn is equivalent fractions, Least common denominator and how to multiply and divide fractions.

6 0
3 years ago
6/7 as a fraction divided by a whole of 12
ValentinkaMS [17]

Answer:

<u>(1/14)</u>

Step-by-step explanation:

(6/7)/(12)              <u>6/7 as a fraction divided by a whole of 12</u>

(6/7)/(12/1)

(6/7)*(1/12)

(1/7)*(1/2)

(1/14)

4 0
2 years ago
Read 2 more answers
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