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Fittoniya [83]
3 years ago
10

An equivalent equation has been written by multiplying the second equation by 2.

Mathematics
2 answers:
Bas_tet [7]3 years ago
8 0

Answer:

y=5 x=13

Step-by-step explanation:

solve simultaneously

4x-9=7

+-4x+6y=8

---------------

3y=15

y=5

substitute y value into first equation

4x-9(5)=7

4x-45=7

4x=52

x=13

saw5 [17]3 years ago
7 0

Answer:

its A

Step-by-step explanation:

ED 2020

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Pearl's Biking Company manufactures and sells bikes. Each bike costs £40 to make, and the company's fixed costs are £5000. In ad
____ [38]

Answer:

R(x) =300·x - 2·x²

C(x) = £5000 + £40 × x

The break even points are 23.47 and 106.53 or 23 and 107 bikes

Step-by-step explanation:

Given that the price function P(x) = 300 -2·x

Cost per bike = £40

The revenue function R(x) is given by  bike price × total number of bikes manufactured and sold

∴ R(x)  = P(x)×x = (300 - 2·x)×x = 300·x - 2·x²

The company's cost function, C(x) is Fixed cost + cost to produce each bike × total number of bikes produced

∴ C(x) = £5000 + £40 × x

The break even point is given by the relation;

Total revenue - total cost = 0

That is, break even point is R(x) - C(x) = 0

300·x - 2·x² - (5000 + 40·x) = 0

-2·x²+260·x-5000 = 0 or 2·x²- 260·x + 5000 = 0

Factorizing, we have;

(x - (65 -5√69))(x - (65 +5√69))

Solving gives x = 23.47 or 106.53

Therefore, the break even points are 23.47 and 106.53.

That is the company is profitable when they produce less than 23 bikes or more than 107 bikes.

3 0
3 years ago
Write an equation in slope-intercept form with a slope of 1 and a y-intercept of (0, -7).
Andrej [43]

Answer:

y = x - 7

Step-by-step explanation:

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

Here m = 1 and c = - 7, thus

y = x - 7 ← equation of line

3 0
4 years ago
One kilometer equals 0.62 miles. How many kilometers equal 16 miles? Round the answer to the nearest tenth. 2.6 kilometers
Orlov [11]
25.8 kilometers that is the answer to your question
7 0
3 years ago
Read 2 more answers
Which is the mode of this data?<br><br> 12, 19, 22, 17, 15, 18, 15, 14, 16
Snezhnost [94]
Answer: 15
REMEMBER: The mode is the value that appears most frequently in a data set.
4 0
3 years ago
Which expression gives the unit length of the line segment with the endpoints (-12, 8) and (2, 8)
Mashcka [7]
They have the same y coordinate, 8, so all we need to figure out is the distance between -12 and 2 of this horizontal line.
to do this add 12 and 2, you should get 14.
now using this information, find the expression that is equal to 14.
|-12|+|2|=14
|-12|-|2|=10
|8|+|8|=16
|8|-|8|=0
as we can see, the first expression would be the correct one.
5 0
3 years ago
Read 2 more answers
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