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Natali [406]
3 years ago
11

The measure of ZA Is 12° greater than the measure of ZB. The two angles are complementary. Find the measure of each angle. . The

mZA IS and m/B Is​

Mathematics
1 answer:
harina [27]3 years ago
4 0

Answer:

m∡ZA = 51°

m∡ZB = 39°

Step-by-step explanation:

∡ZB = 'b'

∡ZA = '12 + b'

b + 12 + b = 90

2b + 12 = 90

2b = 78

b = 39

12 + 39 = 51

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5000 people attended a football game. 2350 of the people attending supported the home team, while 2650 supported the visiting te
Otrada [13]

Answer:

47%

2350 out of 5000=0.47

move the decimal 2 times

3 0
3 years ago
Factor completely x^8- 16.
Nataly_w [17]

Answer:

Step-by-step explanation:


So in this example we'll be using the difference of squares which essentially states that: (a-b)(a+b)=a^2-b^2 or another way to think of it would be: a-b=(\sqrt{a}-\sqrt{b})(\sqrt{a}+\sqrt{b}). So in this example you'll notice both terms are perfect squares. in fact x^n is a perfect square as long as n is even. This is because if it's even it can be split into two groups evenly for example, in this case we have x^8. so the square root is x^4 because you can split this up into (x * x * x * x) * (x * x * x * x) = x^8. Two groups with equal value multiplying to get x^8, that's what the square root is. So using these we can rewrite the equation as:

x^8-16 = (x^4-4)(x^4+4)

Now in this case you'll notice the degree is still even (it's 4) and the 4 is also a perfect square, and it's a difference of squares in one of the factors, so it can further be rewritten:

x^4-4 = (x^2-2)(x^2+2)

So completely factored form is: (x^2-2)(x^2+4)(x^4+4)

I'm assuming that's considered completely factored but you can technically factor it further. While the identity difference of squares technically only applies to difference of squares, it can also be used on the sum of squares, but you need to use imaginary numbers. Because x^2+4 = x^2-(-4). and in this case a=x^2 and b=-4. So rewriting it as the difference of squares becomes: x^4+4 = x^4 - (-4) = (x^2-\sqrt{-4})(x^2+\sqrt{-4}) = (x^2-2i)(x^2+2i) just something that might be useful in some cases.

7 0
1 year ago
Read 2 more answers
Hey anybody able to help? Which expression is equivalent to -5(3x-6/7)?
nalin [4]

Answer:

A: - 15x - 30/7

Step-by-step explanation:

-5 (3x - 6/7)

Just distribute -5 to the values inside the parentheses.

-5 · 3x = -15x

-5 · 6/7 = -30/7

Now form it together:

-15x - 30/7

7 0
3 years ago
Read 2 more answers
1.8c+32<br> c=50<br> 1.8(50)+32
anygoal [31]

Answer:

122

Step-by-step explanation:

1.8 times 50 is 90, and 90 plus 32 is 122

8 0
2 years ago
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What is the volume of this hemisphere
Goryan [66]

Answer: 294.34 m^3

Step-by-step explanation: The formula for the volume of a hemisphere is 2/3 * 3.14 * radius cubed (r^3). Plugging in the values, we have 2/3 * 3.14 * 5.2^3, and we get roughly 294.339 m^3, or rounded to the nearest hundredth, 294.34 m^3.

Hope this helped!

6 0
1 year ago
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