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Feliz [49]
3 years ago
7

Find the product of 21* (-12)​

Mathematics
1 answer:
Lynna [10]3 years ago
7 0

Answer: 252

Step-by-step explanation: 21x-12=252

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19, find the direction angle of vector v to the nearest tenth of a degree
labwork [276]
The vector v is given by:
 v = (7, 2) - (-5, 0)
 v = ((7 - (- 5)), (2-0))
 v = ((7 + 5), 2)
 v = (12, 2)
 Then, the angle is given by:
 tan (theta) = 2/12
 theta = atan (2/12)
 theta = 9.46 degrees
 Answer:
 
The direction angle of vector to the nearest tenth of a degree is:
 
theta = 9.5 degrees
6 0
3 years ago
What is a formula for the nth term of the given sequence?<br> 36, 24, 16...
SpyIntel [72]

Answer:

The formula to find the nth term of the given sequence is 54 · \frac{2}{3} ^{n}

Step-by-step explanation:

The formula for nth term of an geometric progression is :

a_{n} = \frac{a_{1}(r^{n})}{r}

In this example, we have a_{1} = 36 (the first term in the sequence) and

r = \frac{2}{3} (the rate in which the sequence is changing).

Knowing what the values for r and a_{1} are, now we can solve.

a_{n} = \frac{a_{1}(r^{n})}{r} = \frac{36 (\frac{2}{3} ^{n}) }{\frac{2}{3} } = 54 · \frac{2}{3} ^{n}

Therefore, the formula to find the nth term of the given sequence is

54 · \frac{2}{3} ^{n}

3 0
3 years ago
Help me with this question
kaheart [24]
First combine like terms and put the expression in standard form. This expression is now in simplest form and cannot be simplified anymore.
3a + 10ab - 7a^2b - 10ab^2 + 12ab - (-4) + (-a^2b) - 5a
-10ab^2 - 8a^2b -2a + 24ab - (-4)

Hope this helps

5 0
3 years ago
A) Write 91 as the product of prime factors.<br> Write the prime factors in ascending order.
amid [387]

Answer:

1 7 13 91 prime factors in ascending order

3 0
3 years ago
Read 2 more answers
Given a right cone with base area b and height h, what is the formula for the volume?
olga nikolaevna [1]
The formula for a right cone:

V = πr^2(h/3)

V: Volume
r: radius
h: height
πr^2 = base area of a cone

Answer
The formula for the volume in terms of base area b and height h is: V = b(h/3)
3 0
3 years ago
Read 2 more answers
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