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Leona [35]
3 years ago
8

Which of the following equations correctly represents the law of cosines?​

Mathematics
1 answer:
ss7ja [257]3 years ago
4 0

Answer:

I think it's C

Step-by-step explanation:

just looked online.

TIP:

If you want to remember this law,just solve a bunch of questions that involve it and then it will come naturally to you.

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Let’s think about another type of scenario. What if you were told that a bracelet requires 10 beads and 10 minutes to make while
Georgia [21]

Answer:

$425

Step-by-step explanation:

Let x represent the number of bracelets made and let y represent the number of necklace made.

Since the craftsman has 1000 beads to work with, hence:

10x + 20y ≤ 1000    (1)

Also, the craftsman has 1600 minutes, hence:

10x + 40y ≤ 1600   (2)

From ploting equations 1 and 2 on the geogebra online graphing, we can see that the solution to the problem is (40, 30).

Since the bracelet costs $5 and a necklace costs $7.50, hence the maximum revenue is:

Revenue = 5x + 7.5y = 5(40) + 7.5(30) = $425

4 0
3 years ago
What are the zeros of f(x) = x2 + 2x - 80?
Lubov Fominskaja [6]

Answer:

The zeros are 8 and -10, all u have to do is substitute x for those values, factor it, or graph it.

8 0
3 years ago
What is the 23rd term of the arithmetic sequence where a1 = 8 and a9 = 48?
joja [24]

Answer:

23rd term of the arithmetic sequence is 118.

Step-by-step explanation:

In this question we have been given first term a1 = 8 and 9th term a9 = 48

we have to find the 23rd term of this arithmetic sequence.

Since in an arithmetic sequence

T_{n}=a+(n-1)d

here a = first term

n = number of term

d = common difference

since 9th term a9 = 48

48 = 8 + (9-1)d

8d = 48 - 8 = 40

d = 40/8 = 5

Now T_{23}= a + (n-1)d

= 8 + (23 -1)5 = 8 + 22×5 = 8 + 110 = 118

Therefore 23rd term of the sequence is 118.

4 0
3 years ago
I not sure what it is? Thank you to who ever help me
Vadim26 [7]
I think b I might be wrong
8 0
3 years ago
Use the following basketball team's scores for one season to answer the following question 44,43,42,40,42,45,39,38,18 What's the
Nimfa-mama [501]

Answer:

The mean is 39

The median is 42

Step-by-step explanation:

The median is the best measure of center for the above data because half of the values are less than the median and half of the values are more than the median. It's probably the best measure of center to use in a skewed distribution.

The measure of variability is the range because is the simplest measure of variability to calculate but can be misleading if the dataset contains extreme values.

The variability is 67.25

This is how I did it

8 0
3 years ago
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