(-15b - 7) - (-2b)
Answer:
13b + 7
Step-by-step explanation:
Combine like terms. (-15b - 7) - (-2b), add -15b to both sides, the equation then becomes (-7) - (13b). Swap the equation around to become (13b) - (-7), a subtraction sign and then a negative makes the negative a positive. The equation then becomes 13b + 7.
If the areas of two similar polygons are in the ration 64:81, then the ratio of their corresponding sides are
"A polygon, in geometry, any closed curve consisting of a set of line segments (sides) connected such that no two segments cross."
The simple polygons are triangles (3 sides), quadrilaterals (4 sides), and pentagons (5 sides).
Now if we take the given polygon as square (4 sides).
Then,
Let the sides of squares are a and b.
Hence, the ratio of the corresponding sides of polygon is
Learn more about the polygons here
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medals?
Decide if the situation involves a permutation or a combination, and then find
the number of ways to award the medals.
Answer: Permutation; number of ways = 120
Step-by-step explanation:
Answer with explanation:
Number of runner= 5
Number of Distinct Medal = 5
First Medal can be Awarded in 5 ways, second Medal can be awarded in 4 ways and third Medal can be awarded in 3 ways , fourth medal can be awarded in 2 ways and fifth Medal can be awarded in one way.
So, total number of ways =5 × 4×3×2×1=120 way
⇒We will use the concept of Permutation as there are five distinct medal and five different runners
So, Five distinct places can be filled in 5! or ways as order of arrangement is Important because any of the five candidates can win first second, third , fourth or fifth Prize.
= 5!=5×4×3×2×1=120 ways
Because, n!=n×(n-1)×(n-2)×........1.
96 cm3
144 cm3
288 cm3