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Naddika [18.5K]
2 years ago
12

Which numbers are rational? Check all that apply.

Mathematics
1 answer:
Degger [83]2 years ago
6 0
The last three are rational numbers because whole numbers can’t be rational
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Which polynomial is equivalent to (2h − 3k)(h + 5k)?
scZoUnD [109]

(2h - 3k)(h + 5k) \\  =  {2h}^{2}  + 10hk - 3hk - {15k}^{2}  \\  =  {2h}^{2}  + 7hk - {15k}^{2}

Hope this helps. - M
3 0
2 years ago
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Does 2, 5, and 7 make a right triangle
MakcuM [25]

Answer:  No, we don't have a right triangle

==========================================================

Explanation:

If a triangle with sides a,b,c makes the equation a^2+b^2 = c^2 true, where c is the longest side, then this triangle is a right triangle. This is the converse of the pythagorean theorem.

Here we have a = 2, b = 5 and c = 7.

So...

a^2+b^2 = c^2

2^2+5^2 = 7^2

4+25 = 49

29 = 49

The last equation is false, so the first equation is false for those a,b,c values. Therefore, we do <u>not</u> have a right triangle.

------------

In contrast, consider the classic 3-4-5 right triangle

a = 3, b = 4 and c = 5 would make a^2+b^2 = c^2 true because 3^2+4^2 = 5^2 is a true equation (both sides lead to 25).

6 0
2 years ago
Pizza is available with three kinds of cheese and four toppings. how many different ways can you order your pizza with one type
e-lub [12.9K]
You will choose 1 cheese 3 different ways because there are three types of cheeses.

You will choose your topings 6 different ways. 4!/(2!2!) = 4*3/2 = 6

Therefore you will be able to get 6 * 3 different pizzas = 18 pizza combinations.

To confirm the toppings, suppose they are (M)ushrooms (P)epperoni (O)nions and (B)acon

M P
M O
M B
P O
P B
O B

Total 6.The order doesn't matter here. M O is the same thing as OM
8 0
3 years ago
The x axis is<br> vertical<br> horizontal<br> diagonal
Harman [31]

Answer:

Horizontal

Step-by-step explanation:

The x-axis is horizontal while the y-axis is vertical.

5 0
2 years ago
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Shtirlitz [24]

Answer:

Inequality: x > -2

Interval Notation: ( -2, ∞)

Step-by-step explanation:

8 0
3 years ago
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