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lys-0071 [83]
2 years ago
11

39. Why are -2a and 18a like terms?

Mathematics
1 answer:
Vesnalui [34]2 years ago
7 0

Answer:

they each share the same variable which is raised to the same exponent, 1

Step-by-step explanation:

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A basketball has a diameter of 10 in. Using = 3.14, what is the approximate volume of the basketball in cubic inches?
m_a_m_a [10]

Answer:

523.3 cubic inches

Step-by-step explanation:

A basketball has a diameter of 10 in. Using = 3.14, what is the approximate volume of the basketball in cubic inches?

The shape of a basketball is spherical.

Hence:

The volume of a basketball = 4/3 × π × r³

From the question,

π = 3.14

r = radius = Diameter/2

r = 10 in/2 = 5 in

Hence:

The volume of the basketball

= 4/3 × 3.14 × 5³

= 1570 ÷ 3

= 523.33333333 cubic inches

Therefore, the approximate volume of the basketball = 523.3 cubic inches

5 0
3 years ago
If y=3x - 5, find the value of y when x = -1
Tpy6a [65]


y=3x-5

x=-1


y=3*(-1)-5=-3-5=-8

<em>y=-8</em>

5 0
3 years ago
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If i have a forest composed of 25 species of trees, each with a known abundances, how many events are there in the sample space
Vsevolod [243]
There are 25 species of trees, each with a known abundances. The question is how many possible ways to randomly select one tree there are.
We should calculate the number of combinations. Combinations, because we select item/s from a collection. In this case, when we select only one item, the combination is also a permutation. From set of n objects we select r. In our case: n=25, r=1. 
The equation is: n!/r!(n-r)!= 25!/1!*24!=25*24!/24!=25
There are 25 different outcomes (events).
3 0
3 years ago
Rename the number 2,079
Scorpion4ik [409]

Answer:

2 thousands, 0 hundreds, 7 tens, 9 ones

Step-by-step explanation:


6 0
4 years ago
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Evaluate the expression when x = 3/10 and y = - 2/15
Shkiper50 [21]

Answer:

6/15-3/10

Step-by-step explanation:

3x2/15=6/15

7 0
3 years ago
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