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babymother [125]
3 years ago
11

Which of the following represents the most accurate estimation of 38 + 23?

Mathematics
2 answers:
Arlecino [84]3 years ago
6 0
38+ 23=30 + 20 +8 +3=50+8+3=58+3=61.
Naddika [18.5K]3 years ago
4 0
The correct answer is 61...
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Bezzdna [24]
B. $30

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3 0
3 years ago
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Solve the system of equation
Phoenix [80]

Answer:

plain = $10.50

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Step-by-step explanation:

x = pepperoni

y = plain

3x + 2y = 58.5

2x + 4y = 67

using substitution method, I multiplied the first system by -2 to get:

   -6x - 4y = -117

+   2x + 4y =  67

-4x = -50

x = $12.50

2(12.5) + 4y = 67

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3 years ago
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3 years ago
Jordan uses a linear equation to model the data in a table. Which reasoning might Jordan have used in the decision to model the
Mariulka [41]
The last option:The change in y-values is constant for evenly spaced x-values.

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3 0
2 years ago
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Enrollment in a school has grown exponentially since the school opened. A graph depicting this growth is shown. Determine the pe
Yanka [14]

Answer:

4.6%

Step-by-step explanation:

Let the horizontal axis be represented by x and the vertical axis be represented by f(x) or y

The general exponential function is of the form:

f(x) = a(b)^{x}

Here,

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80 = a(b)^{20}                             Equation 1

Using the second point (25, 100) in the function equation, we get:

100 = a(b)^{25}                             Equation 2

Dividing Equation 2 by Equation 1, we get:

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This means, after every year, the number of enrollments is 1.046 times the previous year. Or in other words, the number of enrollment is 0.046 times more the previous year. This shows the number of enrollments grow by 0.046 every year which is equal to 4.6%

Thus, the percentage rate of growth is 4.6%

7 0
3 years ago
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