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tester [92]
2 years ago
12

Could someone help i’ll mark brainliest! please explain too

Mathematics
1 answer:
-BARSIC- [3]2 years ago
3 0

Answer:

C. 8

Step-by-step explanation:

I almost thought this was going to be Pythagorean Theorem, but no.

Use Cosine Law:

cos θ =  \frac{10^2 + 21^2 - 17^2}{2(10)(21)}

θ = cos−1(0.6)

θ = 53.130...

Now use the SOHCAHTOA ratio for sine (\frac{opposite}{hypotenuse}) to find x now that you have one angle:

sin θ = \frac{x}{10}

x = 10sinθ (θ isn't needed to be written out as it is shown in the equation above)

x = 8

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could you possibly help me with this question? (its not part of a graded assignment, just a review from an online course of mine
Virty [35]

Let:

x = Pounds of walnuts in the mix.

Each pound of walnuts costs $0.80. thus x pounds of walnuts cost 0.8x dollars.

Each pound of cashews costs $1.25 and the mix will contain 8 pounds of cashews, so the cost is 8*$1.25 = $10

The total cost of the mix is, therefore: 0.8x + 10 dollars.

We are also given the pound of mix costs $1.00 and we have a total of 8 + x pounds, so the total cost of the mix is 1*(8 + x) dollars.

Equating both costs:

0.8x + 10 = 1*(8 + x)

Operating:

0.8x + 10 = 8 + x

Subtracting x and 10:

0.8x - x = 8 - 10

Simplifying:

-0.2x = -2

Dividing by -0.2:

x = -2/(-0.2)

x = 10

Answer: 10 pounds

8 0
1 year ago
Evaluate b^2 for b= -4
tekilochka [14]

Answer:

16

Step-by-step explanation:

b^2

Let b= -4

(-4)^2

16

5 0
3 years ago
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What’s the answer to this problem?
Alja [10]

Answer:

Figure:         Amount of tiles:

1                    5

2                   8

3                   11

4                   14

5                   17

6                   20

7                   23

8                   26

9                   29

10                 32

11                  35

12                 38

13                 41

The sequence/pattern is +3 tiles.

So Figure 13 will have 41 tiles.

I hope this helps!

<h2><u>PLEASE MARK BRAINLIEST!</u></h2>
3 0
3 years ago
Please Answer the question with the formula and simplification
dybincka [34]

Answer:

1/2

Step-by-step explanation:

-4    3     15    -14

--- *--- *   --- *------

5   7      16     9

Rewriting

-4    3     5*3   -7*2

--- *--- *   --- *------

5   7      4*4     3*3

Canceling like terms

-1    1     1*1   -1*2

--- *--- *   --- *------

1   1      1*4     1*1

This leaves

2

---

4

1/2

3 0
2 years ago
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This is urgent! Please answer!
Alja [10]

Answer:

hold up im solving it

Step-by-step explanation:

3 0
3 years ago
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