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kogti [31]
3 years ago
7

Please help with all

Mathematics
1 answer:
77julia77 [94]3 years ago
4 0
1.   16*10*10*0.5=800 cubic feet

2.   15*9*9*0.5=607.5 cubic inches

3.   17*12*9*0.5=102 cubic feet
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A coal car on a train weighs 30 tons plus 1 ton per cubic yard of coal x that it carries. The total weight of a coal car is: f(x
alisha [4.7K]

Answer: Then the graph of the function f(x) will change shifting vertically down (because the negative sign in 4) by 4 tons.

Option c. The line will shift vertically down by 4 tons.


Solution:

Total weight of a coal car: f(x)=x+30

How will the graph of this function change if the coal car weight is changed to 26 tons?

The total weight of the coal car would be: g(x)=x+26

f(x)=x+30

30=26+4

f(x)=x+26+4

g(x)=x+26

f(x)=g(x)+4

Subtracting 4 both sides of the equation:

f(x)-4=g(x)+4-4

f(x)-4=g(x)

g(x)=f(x)-4

Then the graph of the function f(x) will change shifting vertically down (because the negative sign in 4) by 4 tons.

6 0
3 years ago
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How to graph y=|x-4| -3
dsp73

Take the value of x-4, and make it positive, then subtract three.  The graph would look like the following.



5 0
4 years ago
A car cost $18,000, which is 9/10 of the cost of an apartment. A motorcycle cost 1/5 of the cost of the apartment or 4/5 of the
blagie [28]

Answer:

$1500

Step-by-step explanation:

let the cost of the apartment = x

Hence the cost of the car is \frac{9}{10} \times x

also given the cost of car=18000

Hence

18000= \frac{9x}{10}

x= \frac{18000 \times 10}{9}

x= 2000 \times 10

x= 20000

Motorcylce cost = \frac{1}{5} of Cost of apartment

= \frac{1}{5} \times 20000

= 4000

Also Motorcylce cost=\frac{4}{5} of the cost of 100 soccer balls.

Hence

4000= \frac{4}{5} x (cost of 100 soccer balls.)

(cost of 100 soccer balls.)= \frac{4000 \times 5}{4}

(cost of 100 soccer balls.)= 1000 \times 5

cost of 100 soccer balls= 5000

cost of 1 soccer balls = \frac{5000}{100}

cost of 1 soccer balls = 50

cost of 30 soccer balls = 50 x 30

cost of 30 soccer balls = 1500

Hence the cost of 30 balls is $1500

4 0
4 years ago
Solve for x.<br><br> 4(-2x + 9) = -2(3x - 7)
Gekata [30.6K]

Answer:

x = 11

Step-by-step explanation:

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3 years ago
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Determine which line the point (2, -1) lies on.
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Answer: the x axis because its positive 2, -1 the first number is positive

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