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Yakvenalex [24]
3 years ago
8

Ricky had 21 video games. He traded in 16 games for store credit. How many video games does Ricky have left?

Mathematics
2 answers:
Margaret [11]3 years ago
8 0
21-16= 5
21 minus 16 equals 5
skad [1K]3 years ago
4 0
I would divide 21 and 16 or minus 21-16! hope this helps ! you can try both if needed! good luck with ur sudies in math
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This filling cabinet is 26.5 in long. 15 in wide, and 52 in tall. What is the volume and surface area of this 3D shape?
kherson [118]
Volume = 20,670 inches cubed
Surface Area = 3915 inches squared
3 0
3 years ago
A type of cell reproduces by splitting itself in half. One cell becomes 2 cells, 2 cells become 4 cells, and 4 cells become 8 ce
svet-max [94.6K]

It represents a geometric sequence because it has a common ratio of 2.

In fact, a sequence is said to be geometric if any two adjacent elements are in the same ratio. In other words, if you choose any index n \in \mathbb{N} and consider the two consecutive terms a_n and a_{n+1}, you have

\dfrac{a_{n+1}}{a_n} = r

no matter which index you chose. In your case, the next term in the sequence is always the double of the previous one, so the ratio between two consecutive terms is always 2, and the series is geometric with common ratio 2

4 0
3 years ago
Besides 26 and 1, what is one factor of 26?
Ainat [17]
13 and 2, I think that is the only one left.

5 0
3 years ago
Read 2 more answers
Find an equation in standard form of the parabola passing through the points (1, -2), (2,-2), (3,-4)
Yuliya22 [10]
The standard form of a parabola is y=ax²+bx+c
use the three given points to find the three unknown constants a, b, and c:
-2=a+b+c............1
-2=4a+2b+c......... 2
-4=9a+3b+c...........3
equation 2 minus equation 1: 3a+b=0..........4
equation 3 minus equation 2: 5a+b=-2.........5
equation 5 minus equation 4: 2a=-2, so a=-1
plug a=-1 in equation 4: -3+b=0, so b=3
Plug a=-1, b=3 in equation 1: -2=-1+3+c, so c=-4
the parabola is y=-x²+3x-4

double check: when x=1, y=-1+3-4=-2
when x=2, y=-4+6-4=-2
when x=3, y=-9+9-4=-4
Yes.


8 0
2 years ago
Consider functions f and g below.
Pani-rosa [81]

Answer:

D

Step-by-step explanation:

f(x) - g(x) = -9x^2 - 7x + 12 - (3x^2 - 4x - 15)  Remove the brackets

f(x) - g(x) = -9x^2 - 7x  + 12 - 3x^2 + 4x + 15

f(x) - g(x) = -9x^2 - 3x^2 - 7x + 4x + 12 + 15

f(x) - g(x) = -12x^2- 3x + 27

Answer D

3 0
3 years ago
Read 2 more answers
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