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OleMash [197]
3 years ago
7

A ∠A and ∠ B ∠B are complementary angles. If m ∠ A = ( 2 x − 23 ) ∘ ∠A=(2x−23) ∘ and m ∠ B = ( x + 20 ) ∘ ∠B=(x+20) ∘ , then fin

d the measure of ∠ A ∠A.
Mathematics
1 answer:
son4ous [18]3 years ago
7 0

Answer:

∠A = 99°

Step-by-step explanation:

Complementary angles sum to 180°, thus

∠A + ∠B = 180 ← substitute values

2x - 23 + x + 20 = 180

3x - 3 = 180 ( add 3 to both sides )

3x = 183 ( divide both sides by 3 )

x = 61

Hence

∠A = 2x - 23 = (2 × 61) - 23 = 122 - 23 = 99°

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gregori [183]
<h2>B. No</h2>

The given equation is not a sinusoid

4 0
3 years ago
Sam needs a web designer. Designer A is offering her services for an initial $500 in addition to $100 per hour. Designer B is of
gavmur [86]

Answer:

2 hours

Step-by-step explanation:

Let's denote the amount of time we need to find out, t.

=> 600 + 50t < 500 + 100t

or 600 - 500 < 100t - 50t

or 100 < 50t

or 100/50 < t

or t > 2

=> After 2 hours, company B will be cheaper option than company A

3 0
3 years ago
What is X?<br><br> 2.3x-8.7=0.8x-4.2<br><br> pLS hELP
daser333 [38]

Answer:

x = 45/17

Step-by-step explanation:

We can move all x to 1 side and all the numbers to another. You can add 8.7 on both sides and get that 2.3x = 0.8x + 4.5. Next, we subtract by 0.8x on both sides to get that 1.7x = 4.5, where we can then divide by 17/10 on both sides to get that x is equal to 45/10 * 10/17, so that means that x = 45/17.

5 0
3 years ago
Need help with special right triangles
svetoff [14.1K]

Answer:

explain what you need help about then i will try to help you

Step-by-step explanation:

6 0
3 years ago
Will upvote<br><br> 4,7,12,19,31,... does this classify as a arithmetic, geometric, or neither
spayn [35]
To find if a series is either geometric or arithmetic:
it must satisfy this property:

Arithmetic:

a(n+1) - a(n) = const

Geometric:

a(n+1)/a(n) = const

In your case:

r1 = 7 -4 = 3

r2 = 12 - 7 = 5

r1 != r2  (not arirthmetic)

Geometric check:

r1 = 7/4

r2 = 12/7

r1 != r2  (not Geometric)

so neither. 


8 0
3 years ago
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