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zzz [600]
4 years ago
13

. If x tan 45° sin 30° = cos 30° tan 30°, then x is equal

Mathematics
1 answer:
Phantasy [73]4 years ago
5 0

Answer:

x = \frac{\sqrt{3} }{3}

Step-by-step explanation:

You can either use the unit circle to find your values and then solve for x or plug it into the calc directly to find your answer (don't forget to put your mode on deg!). It is much faster to plug it into your calc. Simply just divide both sides by tan45°cos30° and you should isolate x and find your answer.

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Mr. Aba builds a circular patio with a diameter of 12 feet. He covers the patio with paving stones. The cost of the paving stone
Anettt [7]

Answer:

395.85

Step-by-step explanation:

If the diameter is 12, then the radius must be 6. Following the formula of pi: 2 * pi * radius, our result is 37.7. 37.7 * 10.50 is 395.85

I really hope this helps. My memory of circles and pi isn't the best.

8 0
3 years ago
Read 2 more answers
Solve for x:<br><br>5/7 = 4x/83​
Simora [160]

Step-by-step explanation:

\to  \dfrac{5}{7}  =  \dfrac{4x}{83}

By cross multiplication,

→ 83(5) = 4x(7)

→ 415 = 28x

<h3>→ 415/28 = x</h3>

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7 0
3 years ago
Which shows a perfect square trinomial?
anastassius [24]
The answer is <span>c. 16x2 + 24xy + 9y2.

Since we need trinomial (three term expression) choices a and b are incorrect because they have only two terms.

So, our square trinomial is a</span>² + 2ab + b² or a² - 2ab + b²
a² + 2ab + b² = (a + b)²
a² - 2ab + b² = (a - b)²

Let's check choices c and d:
c) 16x² + 24xy + 9y²
a² = 16x²
a² = (4x)²
a = 4x

b² = 9y²
b² = (3y)²
b = 3y

a² + 2ab + b² = (4x)² + 2 * 4x * 3y + (3y)² = 16x² + 24xy + 9y²
CORRECT

d) 49x² - 70xy + 10y²
a² = 49x²
a² = (7x)²
a = 7x

b² = 10y²
b² = (y√10)²
b = y√10

a² + 2ab + b² = (7x)² + 2 * 7x * y√10 + (y√10)² = 49x² + 14xy√10 + 10y²
INCORRECT

So, c) is correct answer
8 0
4 years ago
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There are endangered animals at a National Park. In​ 1980, it was estimated that there were endangered animals in the park. In​
lisov135 [29]
Black lives do kind of matter in my opinion
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3 years ago
If a circle has a radius of 4 inches, what is the diameter <br> Please help Please<br> Save a woman
PIT_PIT [208]

Answer:

8 inch

Step-by-step explanation:

radius is half the diameter

6 0
3 years ago
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