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2 years ago

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Mathematics

1 answer:

kifflom [539]2 years ago

5 0

Answer: yo no Abbas

Step-by-step explanation:

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John has $20.43 dollars in his pocket. He buys a tv for $15.39 dollars. How many dollars does John have left?

AleksAgata [21]

All you do is subtract what John is spending from the amount he has. 20.43-15.39= $5.04

4 0

3 years ago

The projected T. rex is about

dolphi86 [110]

Answer: $scale\ factor=230$

Step-by-step explanation:

You need to analize all the information given in the exercise.

You know that the actual height of the T-rex on the projector lens is the following:

$actual\ height=2\ cm$

The height of the projected T-rex is:

$projected\ height=4.6\ m$

Make the conversion from meters to centimeters:

$projected\ heigth=(4.6\ m)(\frac{100\ cm}{1\ m})\\\\projected\ heigth= 460\ cm$

Therefore, the scale factor will be:

$scale\ factor=\frac{projected\ heigth}{actual\ heigth}$

Finally, you must substitute values into the equation and then you must evaluate in order to find the scale factor of the projection. You get that this is:

$scale\ factor=\frac{460\ cm}{2\ cm}\\\\scale\ factor=230$

7 0

3 years ago

What is the slope of the line that passes through the points (2,7) and (8,-5)

Nookie1986 [14]

Answer:

m = -12 / 6 = -2 / 1 = -2

So its -2

3 0

3 years ago

I need a bit of help with this, May you please help me?<br>15 points.

max2010maxim [7]

The answer is 7 feet becaise 0 opp ik

7 0

3 years ago

Read 2 more answers

Write an equation in slope-intercept form and then in standard form for each line described. y-intercept -2; x-intercept 5

Xelga [282]

Hello
the line passes by A ( 0 ; -2) and B (5 ; 0) equation : y = ax+b
a is a slop : a = (yb - ya)/(xb -xa)
a = (0+2)/(5-0)
a =2/5
y = (2/5)x+b
if x=5 and y= 0
0 = (2/5)(5)+b
b= - 2
the equation is : y = (2/5)x-2

5 0

2 years ago