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matrenka [14]
3 years ago
11

Sin230° = _____ -sin50° sin50° sin130°

Mathematics
1 answer:
likoan [24]3 years ago
8 0
Sin230=sin(180+50)=sin180cos50+cos180sin50=-sin50 answer 1
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What is twice 2 to the 30 power ? Write using exponents. Explain your reasoning
Rus_ich [418]

2 times 2^30 simple means that = (2^1) x (2^30)

<span>In multiplying numbers of the same base (in this case 2), the exponents are just added, therefore giving us:

</span>

(2^1) x (2^30) = (2^31)

 

Answer:

<span>2 to the 31 power</span>

4 0
3 years ago
Read 2 more answers
SO i need help urgently. 15 points!
Aloiza [94]

Answer:

-a² + 2ab + b² is your answer, or C).

Step-by-step explanation:

b(a + b) -a (a - b)

Distribute b to (a + b), and -a to (a - b)

b(a + b) = ab + b²

-a(a - b) = -a² + ab

Simplify. Combine like terms.

(-a² + ab) + (ab + b²) = -a² + 2ab + b²

-a² + 2ab + b² is your answer, or C).

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3 0
4 years ago
Read 2 more answers
The ratio of Joey's Rope to chads rope is 16:6 . Joeys rope is 112 cm long . How long is chads rope ?
Serhud [2]
The answer would be 17.920 because 112 multiplied by 16.6 would equal 17.920
6 0
3 years ago
Can anyone solve ? This one is beyond me
Makovka662 [10]

Answer:

Rate = 0.13

Step-by-step explanation:

Given

y = \sqrt[3] x

Required

Determine the average rate of change over [2,7]

This is calculated as:

Rate = \frac{f(b) - f(a)}{b - a}

In this case:

b = 7 and a = 2

So, we have:

Rate = \frac{f(7) - f(2)}{7-2}

Rate = \frac{f(7) - f(2)}{5}

From the table:

f(7) = 1.91

f(2) = 1.26

Rate = \frac{1.91 - 1.26}{5}

Rate = \frac{0.65}{5}

Rate = 0.13

5 0
3 years ago
Solve for x
andrew11 [14]

Answer:

D

Step-by-step explanation:

For example,

5×7-10>20

5(-3)-10<15

4 0
3 years ago
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