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IgorC [24]
3 years ago
15

Answer in one decimal places​

Mathematics
2 answers:
olga2289 [7]3 years ago
5 0

Answer:

ffyjbcjklkkofdfkjjjjj.ghjnn

kobusy [5.1K]3 years ago
4 0

Answer:

x = 126.9° , x = 306.9°

Step-by-step explanation:

Given

3tanx = - 4 ( divide both sides by 3

tanx = - \frac{4}{3}

Since tanx < 0 then x is in 2nd / 4th quadrants

x = tan^{-1} (\frac{4}{3} ) ≈ 53.1° ← related acute angle

Then

x = 180° - 53.1° = 126.9°

x = 360° - 53.1° = 306.9°

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Alecsey [184]

Answer:

First mechanic: 20 hours

Second mechanic: 15 hours

Step-by-step explanation:

First we create two equations where:

x - hours of first mechanic

y - hours of second mechanic

x+y=35

115x+45y=2975

Then, we multiply both sides of the first equation by 45, and then subtract it from the second equation:

45x+45y=1575

|115x+45y=2975

-|45x+45y = 1575

70x = 1400

x=20 hours

Now we know for how many hours the first mechanic worked. Now we just need to subtract that from the combined total to find the second mechanic's hours:

35-20=15 hours

3 0
3 years ago
10. Silas has 5 1/4 cups of flour. He uses 3 1/2 cups to bake bread, then he borrows another 2 cups from his neighbor. He wants
Step2247 [10]

Answer:

A, Yes, he has 1 cup left

Step-by-step explanation:

5.25 at the start

5.25 - 3.5 = 1.75

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5 0
2 years ago
Read 2 more answers
What is the answer to this math problem
Viefleur [7K]
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Lets convert all of the division to multiplication by using the reciprocal of the fractions
2×\frac{3}{2}×-6×5×- \frac{4}{3}
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4 0
3 years ago
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MrRa [10]

Answer:

x=12.124

Step-by-step explanation:

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using pythagoras theorem

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here and b are legs and c is hypotenuse

7^2 + x^2 = 14^2

49 + x^2 = 196

x^2 =196-49

x^2 =147

x=\sqrt{147}

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3 0
2 years ago
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Gre4nikov [31]

Answer:

b

Step-by-step explanation:

8 0
2 years ago
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