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sergeinik [125]
3 years ago
8

Can someone please explain to me how I do this?

Mathematics
2 answers:
Nastasia [14]3 years ago
6 0

Answer:

x = 12.77 cm

Step-by-step explanation:

In this problem, we will use trigonometry to find the missing value. I will use the 70 degree angle to find it.

12cm is the opposite value for 70, and x is the hypotenuse. We will use Sine to solve this problem.

Since we are missing the hypotenuse, we set up the equation like this -

x = 12/Sin(70)

This leads us to our answer, x=12.77 cm (rounded)

Hunter-Best [27]3 years ago
6 0

Check the picture below.

make sure your calculator is in Degree mode.

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Need help with 21-23 you suppose to simplify the expression
lora16 [44]

To solve these problems, we must remember the distributive property. This property states that a coefficient being multiplied by a polynomial in parentheses is equal to the sum of the coefficient times each of the separate terms. Using this knowledge, let's begin with number 21:

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To begin, we should distribute the negative sign through the first set of parentheses and the coefficient of positive 3 through the second set of parentheses.

-4x - 17 + 21 - 3x

Next, we must combine like terms, or add/subtract the constants terms and the variable terms in order to create a more concise expression.

-7x + 4 (your answer)

Now, we can move on to question 22 and solve it in a similar manner:

7(2n-8) - 4(12 - 8n)

Again, we will distribute the coefficients through the parentheses. However, keep in mind that the coefficient in front of the second set of parentheses is actually a NEGATIVE 4, so we must distribute the negative as well.

14n - 56 - 48 + 32n

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Now, we can solve problem 23:

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We will again distribute through the parentheses:

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Combine like terms after that:

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Answer:

Assuming that AED is the currency:

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The question notes that if the TV is 3 the bike would be 2.

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