Answer:
57.5 marbles rounding to 58 if you do not have partial marbles
Step-by-step explanation:
The number of marbles is equal to the percent of the marbles times the total number of marbles
23 = 40% total marbles
Change to decimal form
23 = .40 M
Divide by .40
23/.40 = .40M/.40
57.5 = M
This question is odd since you can't have part of a marble
I would round up and have 58 marbles
58 *.40 = 23.2 marbles
Answer:
pattern
Step-by-step explanation:
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Answer:
See below
Step-by-step explanation:
Given the above information, we can make the first part to be;
First part = y + 10
Then,
Second part = y
y + 10 : y = 5 : 3
(y + 10) / y = (5) / (3)
Cross multiply,
3y + 30 = 5y
Collect like terms
5y - 3y = 30
2y = 30
y = 15
Therefore, substituting the value of y,
First part = y + 10
First part = 15 + 10
First part = 25
Second part = y
Second part = 15
Number = First part + Second part
Number = 25 + 15
Number = 40
Answer:
The axis of symmetry is x = -2 and the vertex is (-2, 9)
Step-by-step explanation:
To find the vertex of the standard form equation, use the formula x = -b/2a. Then substitute -b/2a into the equation and solve for y.
Here a = -1, b = -4 and c = 5.
Substitute the values and solve.
x = -(-4)/2(-1)
x = 4/-2
x = -2
Substitute x = -2.
y = -(-2)^2 -4(-2) + 5
y = -4 + 8 + 5
y = 9
So the axis of symmetry is x = -2 and the vertex is (-2, 9).