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igomit [66]
3 years ago
7

3 (x + 4) -5 (x - 1) -3 c. x> 1 d. x 6

Mathematics
1 answer:
dezoksy [38]3 years ago
7 0

Answer:

C

Step-by-step explanation:

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What are the surface area and volume ratios of a cylinder change if the radius and height are multiplied by 5/4 ?
victus00 [196]

Answer:

The ratio of the surface areas and volume is 8((5y+5x) /25xy)

Step-by-step explanation:

This problem bothers on the mensuration of solid shapes.

Let us assume that the radius =x

Radius r=5x/4

And the height =y

Height h= 5y/4

We know that the total surface area of a cylinder is

A total = 2πrh+2πr²

We can factor out 2πr

A total = 2πr(h+r)

The volume of a cylinder is given as

v= πr²h

The surface area and volume ratios

Can be expressed as

2πr(h+r)/πr²h= 2(h+r)/rh

= (2h+2r)/rh= 2h/rh + 2r/rh

= 2/r + 2/h

= 2(1/r + 1/h)

Substituting our value of x and y

For radius and height we have

= 2(1/5x/4 + 1/5y/4)

=2(4/5x + 4/5y)

=2*4(1/5x + 1/5y)

= 8 (5y+5x/25xy)

6 0
3 years ago
Read 2 more answers
Y=-5x+6. y=3x-2 what do the values of x and y represent​
Arisa [49]

Answer:

x=1; y=1

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
a garden is in the shape of a rectangle and has a perimeter of 70 yards. the length of the garden is 5 more than twice the width
scZoUnD [109]
If the length of the garden is 5 more than twice the width, then length = 2 X width + 5.
P = 70
L= 2W + 5
P = 2 X (L + W)
70 = 2 X ((2W+5) + W))
You can take the + 5 out at this point by multiplying it by the 2 outside the brackets (5 for each length)
70 - (2X5) = 2X ((2W) + W)
70 - 10 = 2 X (2W + W)
60 = 2 (3W)
60 = 2*3W
60 = 6W
10 = W
The width is 10.
So what's the length? 2W + 5
Length = 2 * 10 + 5
Length = 25.

Length is 25, width is 10.

Check: 70 = 2 (25 + 10)
70 = 2(35)
70 = 70
Correct!
7 0
4 years ago
At a recent KCMS dance, students were surveyed to find that there were 45 lower school students and 70 upper school students.Wha
Mrac [35]
First you add 45+70=115, next you put 70 over 115 so it’s a fraction. Divide 70 by 115 which is about 0.6086, finally, you move the decimal two spots to the right. The answer is 60.86%
6 0
3 years ago
Helpppp me please !!!!!!!!!!!!!!
baherus [9]

Answer:

\frac{-1}{6}x^{3} + - \frac{1}{2}x^{2}

Step-by-step explanation:

5 0
3 years ago
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