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3 years ago

28. The edges of a cube are all increased by

Mathematics

1 answer:

Zolol [24]3 years ago

7 0

Answer:

Percentage increase in volume will be

33.1

Step-by-step explanation:

Let the each edge of cube be

100

units.

Then its volume is

100

1000000

cubic units.

If each edge increases by

it becomes

110

units

and volume becomes

110

1331000

cubic units

Therefore increase in volume is

1331000

−

1000000

331000

cubic units

and percentage increase in volume is

331000

1000000

100

331

33.1

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As an estimation we are told £3 is €4.

agasfer [191]

Answer:

Step-by-step explanation:

7 0

2 years ago

Evaluate the expression if a=2,b=-3,C=-1, and D=4<br><br><br> -2(b^2-5c)

Alenkasestr [34]

$\qquad \qquad \bf \huge\star \: \: \large{ \underline{Answer} } \huge \: \: \star$

Equivalent value = -28

$\textsf{ \underline{\underline{Steps to solve the problem} }:}$

$\qquad❖ \: \sf \: - 2( {b}^{2} - 5c)$

( put the values )

$\qquad❖ \: \sf \: - 2 \{( - 3) {}^{2} - 5( - 1) \}$

$\qquad❖ \: \sf \: - 2(9 - (- 5))$

$\qquad❖ \: \sf \: - 2(9 + 5)$

$\qquad❖ \: \sf \: - 2 \times 14$

$\qquad❖ \: \sf \: - 28$

$\qquad \large \sf {Conclusion} :$

-2(b² - 5c) = -28

7 0

1 year ago

6 1⁄3 + 7 1⁄4 – 2 1⁄2 =

Korvikt [17]

Answer:

11 1/12

Step-by-step explanation:

6 1/3 = 19/3

7 1/4 = 29/4

2 1/2 = 5/2

19/3 + 29/4 - 5/2

We must find the LCM of 3, 4, and 2. This happens to be 12

3*4 = 12

4*3 = 12

2*6 = 12

Multiply each fraction by the factor that'll get it to 12.

19/3 * 4/4 = 76/12

29/4 * 3/3 = 87/12

5/2 * 6/6 = 30/12

Now go through the problem

76/12 + 87/12 - 30/12

76 + 87 = 163

163/12 - 30/12

163 - 30 = 133

133/12

Simplify

133/12 = 11.0833... or 11 1/12

Hope this helps.

6 0

3 years ago

Johnny works after school and earns $8 per hour. He needs at least $2000 to purchase a car so he does not need to take the bus.

Inga [223]

2hours

Step-by-step explanation:

2 hours

4 0

2 years ago

X+(x-10)=26<br> 5,12,15,18

Likurg_2 [28]

Answer: 18

Step-by-step explanation:

put each number in place of x and finish the equation. you will find that 5, 12, and 15 don’t work because they just simply don’t add up.

finally, put 18 in place of x.

18 + (18 - 10) = 26

18 + 8 = 26

26 = 26 ✔️

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3 years ago