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iVinArrow [24]
3 years ago
8

How would I solve this ? Steps ?

Mathematics
2 answers:
Oxana [17]3 years ago
3 0
The answer would by -9 since you subtracted 9 from 5 which decreased the value of y.
stepan [7]3 years ago
3 0
"the answer would be -9 since you subtracted 9 from 5 which decreased the value of y."

how is it negative 9 if you were to subtract 9 - 5 it would be 4
and if you were to subtract 5 - 9 it would be negative 4 
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A typical airplane flies at an altitude of 38,000 feet. Part A: Write an integer to represent an airplane's altitude.
irga5000 [103]

Answer:

+ 38,000

Step-by-step explanation:

Given that:

Altitude of airplane = 38,000

The altitude of an object such as airplane in this scenario refers to the height of the airplane above sea level. The sea level is represented as a zero point (mid level) such that distance below are negative and those above are positive.

Hence, at an altitude of 38000 feets, altitude of airplane can be represented as +38,000 feets.

6 0
3 years ago
What is the depth on the Indian Ocean rounded to the nearest thousand 12,598
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Help please due in 30 minutes
I am Lyosha [343]

Answer:

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6 0
3 years ago
A factory is to be built on a lot measuring 210 ft by 280 ft. A local building code specifies that a lawn of uniform width and e
Tresset [83]

Answer:

Width of lawn = 35 ft

Dimensions of factory = length: 210 ft, width: 140 ft

Step-by-step explanation:

The total area of the lot can be calculated as:

A_{lot} = 210 * 280\\A_{lot} = 58800 ft^{2}

Since, the area of factory should be equal to area of lawn:

A_{lot} = A_{factory} + A_{lawn}\\58800 = 2 A_{factory or lawn}\\\\A_{factory or lawn} = \frac{58800}{2}\\A_{factory or lawn} = 29400 ft^{2}

Now, let 'x' be the width of lawn, the dimensions of factory can be written as:

(210-2x)\\(280-2x)\\

Since, area is equal to length x width:

(210-2x)*(280-2x) = 29400\\Simplifying:\\210*280 - 210*2x - 2x*280 + 4x^{2} = 29400\\58800 - 420x - 560x +4x^{2} = 29400\\4x^{2}  - 980x +58800 = 29400\\4x^{2} - 980x + 29400 = 0\\

Divide whole equation by 4,

x^{2} - 245 + 7350 = 0\\

Solving above quadratic equation, we get,

x = 210\\x = 35\\

x = 35 seems realistic width of the lawn.

Now, finding the dimension of factory:

(210-2x) = 210 - 2(35) = 140 ft\\(280-2x) = 280 - 2(35) = 210ft

We can also reconfirm the area of factory by multiplying the above two lengths:

140 * 210 = 29400 ft

8 0
3 years ago
Which function family is represented by the table?<br> x -5 0 5 10 15 20 y 3 4 5 6 7 8
Ksenya-84 [330]

Domain ( Inputs ) Range (Outputs)

2, 5, 10. 6, 15 , 30

X Y

2. 6

5. 15

10. 30

6 0
2 years ago
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