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svlad2 [7]
2 years ago
7

2 oranges and 3 lemons cost 64p 3 oranges and 4 lemons cot 89p whats the cost of an orange?

Mathematics
1 answer:
adelina 88 [10]2 years ago
3 0

Answer:

The cost of an orange is 21.5

Step-by-step explanation:

let orange be O and lemon be L

it becomes simultaneous Equations

2O+3L=64----1. x3

3O+4L=89----2. x2

6O+12L=192

6O+8L=178

subtracting

4L=14

L=7

put 7 for L in equ 1

2O+3(7)=64

2O+21=64

2O=64-21

2O=43

O=21.5

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Please help!!! i need this done by tonight!! 50 points!!
Vinil7 [7]

The equation of best fit is y = (-22/5)x + 10.

What is an equation of a line?

The equation of a line is given by:

y = mx + c where m is the slope of the line and c is the y-intercept.

Example:

The slope of the line y = 2x + 3 is 2.

The slope of a line that passes through (1, 2) and (2, 3) is 1.

We have,

The following coordinates are given:

Pick two coordinates.

(0, 10) and (25, -100)

The equation of best fit.

y = mx + c

Now,

m = (-100 - 10) / (25 - 0)

m = -110 / 25

m = -22/5

Now,

(0, 10) = (x, y)

10 = (-22/5) x 0 + c

c = 10

Now,

y = mx + c

y = (-22/5)x + 10

Thus,

Using the coordinates the equation of best fit is y = (-22/5)x + 10.

Learn more about equation of a line here:

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5 0
1 year ago
Identify the variables, objective functions, and constraints
dsp73
What does it constraints?
7 0
3 years ago
Point C is located at (1, 2), and point D is located at (-4,-2). Find the point that is the distance from point C
marishachu [46]

Answer:

The answer would be c

Step-by-step explanation:

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6 0
3 years ago
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3 years ago
Complete the following sentence. The coefficient of determination between the dependent variable, TEST SCORE, and the independen
amm1812

Answer: a. variation in the variable, HOURS SPENT STUDYING explains 43% of the variation in the variable. TEST SCORE

Step-by-step explanation:

The coefficient of determination is denoted by R square is the proportion of the variance in the dependent variable that is predictable from the independent variable.

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Hence, the correct option is a.

8 0
3 years ago
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