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Irina-Kira [14]
3 years ago
5

Match the following items.

Mathematics
2 answers:
Margarita [4]3 years ago
8 0

1. Commutative property of adfition

2. Multiplicative inverse

3. Associative property of addition

4. Distributive property

5. Additive identity

sukhopar [10]3 years ago
6 0

Answer:

1-------------- Commutative property of addition

You can commute the terms in a addition, so doesn't matter wat therm goes left or right,

2 ------------ is multiplicative inverse

Each number X has another number Y so X*Y=1

3-------------- Associative property of addition

When you have parentheses in this type of addition, the order in what you do te equation doesn't matter

4 ------------- distributive property

You can distribute the multiplication here, so x(a +b) = x*a + x*b

5 ------------ Additive identity

There exist one number a so for every number x, x+a = x, and the number a is te zero.

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Find x<br> a) 21 √2<br> b)7<br> c)21 √2/2<br> d)21 √3/2
fgiga [73]

Answer:

C

Step-by-step explanation:

Use the sine ratio in the left, right triangle to find the common side to both triangles and the exact values

sin60° = \frac{\sqrt{3} }{2} , cos45° = \frac{1}{\sqrt{2} } , thus

sin60° = \frac{opposite}{hypotenuse} = \frac{opp}{7\sqrt{3} } = \frac{\sqrt{3} }{2} ( cross- multiply )

2 × opp = 21 ( divide both sides by 2 )

opp = \frac{21}{2}

Now consider the right triangle on the right, using the cosine ratio

cos45° = \frac{adjacent}{hypotenuse} = \frac{\frac{21}{2} }{x} = \frac{1}{\sqrt{2} } ( cross- multiply )

x = \frac{21}{2} × \sqrt{2} = \frac{21\sqrt{2} }{2} → C

5 0
2 years ago
Write the equation of a quadratic function in standard form for the parabola that passes through the given points.
vazorg [7]

Answer:

5,7 given point its korrect now

8 0
1 year ago
What does 72 divided by 9 + 4x4 equal
MrMuchimi
72 divided by 9 = 8
8 + 4x4 = 8+16
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5 0
2 years ago
Read 2 more answers
A triangle has sides of length 5, 8, and 10. What is the measure of its largest angle?
masha68 [24]
We'll use the Law of Cosines
We'll call
side a = length 5
side b = length 8
side c = length 10
and their corresponding angles as A, B and C
"C" would be the largest angle
cos (C) = (a^2 + b^2 - c^2) / 2 * a * b
cos (C) = (5^2 + 8^2 - 10^2) / 2 * 5 * 8
cos (C) = 25 + 64 -100 / 80
cos (C) = -11 / 80
cos (C) = <span> <span> <span> -0.1375 </span> </span> </span>
arc cosine ( <span> <span> <span> -0.1375 </span> </span> </span> ) = 97.903 Degrees
The largest angle is 97.903 Degrees



8 0
3 years ago
Simplify 5(x - 2) 3x 8x - 2 8x - 10 -7x
Elodia [21]
5(x - 2) + 3x = 5x - 10 + 3x = 8x - 10
6 0
3 years ago
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