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Travka [436]
3 years ago
15

What is the measure of angel A rounded to nearest whole number ?

Mathematics
2 answers:
snow_lady [41]3 years ago
4 0
Use inverse cosine here because you have the side adjacent to angle A and the hypotenuse.  On your calculator, press the 2nd key then cosine to see this on your display cos^{-1} then enter 8/17 to give you an angle measure of 62 degrees.
trasher [3.6K]3 years ago
3 0

Answer:

D. 62 degrees

Step-by-step explanation:

Here, ABC is a right angles triangle,

In which,

AB = 8 units,

AC = 17 units,

∠B = 90°,

By the pythogorous theorem,

AC^2=AB^2+BC^2

17^2=8^2+BC^2

289=64-BC^2

225=BC^2

\implies BC=15\text{ unit}

By the law of sine,

\frac{sin A}{BC}=\frac{sin B}{AC}

\frac{sin A}{15}=\frac{sin 90^{\circ}}{17}

sin A = \frac{15}{17}

\implies A= 61.9275^{\circ}\approx 62^{\circ}

Hence, the measure of angle A is 62 degrees,

Option D is correct.

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200 + 10x = 120 + 15x now solve the equation to find x, the number of hours that both companies will charge the same ammount
torisob [31]

Answer:

16

Step-by-step explanation:

Given the equation, 200 + 10x = 120 + 15x, let's solve for x as follows,

Subtract 200 from both sides

200 + 10x - 200 = 120 + 15x - 200

10x = - 80 + 15x

Subtract 15x from both sides

10x - 15x = - 80 + 15x - 15x

-5x = - 80

Divide both sides by -5

\frac{-5x}{-5} = \frac{-80}{5}

x = 16

8 0
2 years ago
The larger of two number is 12 more than the smaller number.if the sum of the two numbers is 74, find the two numbers
Mars2501 [29]
<h3><u>The value of the smaller number is 31.</u></h3><h3><u>The value of the larger number is 43.</u></h3>

y = 12 + x

y + x = 74

Since we have a value for y, we can plug it into the second equation

12 + x + x = 74

Subtract 12 from both sides.

x + x = 62

Combine like terms.

2x = 62

Divide both sides by 2.

x = 31


Now that we have a value of x, we can plug it into the original equation to get a value for y.

y = 12 + 31

y = 43

3 0
3 years ago
Olivia wants to walk 8000 steps today. She walked 45% of this total before lunch? How many steps did Olivia walk before lunch?
LiRa [457]

Answer:

3600 steps

Step-by-step explanation:

Step 1: Multiply 45 by 8000.

  • 45 * 8000
  • 360000

Step 2: Move the decimal point two places to the left.

  • 36000.0
  • 3600.00

Therefore, the answer is 3600 steps.

Have a lovely rest of your day/night, and good luck with your assignments! ♡

4 0
2 years ago
Need geometry genius
IRISSAK [1]
Answer is D. 

Last one...

hope it helps

8 0
3 years ago
Farmer Smith enclosed his rectangular pasture with fence that cost him $1.50 per linear meter. If his pasture is twice as long a
maria [59]

Answer:

$2,700

Step-by-step explanation:

Let the width of the pasture be x, this means that the length of the pasture will be 2x

The area of a rectangle is L * B

Hence,

x * 2x = 18,000

2x^2 = 180,000

x^2 = 90000

x = 300 meters

This means the length is 600 metres

Now, to get the length of the fence, we need to know the actual perimeter which is 2(L + B)

= 2 ( 300 + 600)

2 * 900 = 1,800 metres

The cost is thus 1,800 * $1.50 = $2,700

6 0
3 years ago
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