3 years ago

Five less than seven times a number equals the sum of five times the number and one

Mathematics

1 answer:

Tema [17]3 years ago

7 0

Answer:

2.5

Step-by-step explanation:

7x - 5x = 5

2x = 5

x =5/2

x = 2.5

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a strawberry cake is cut into three pieces. The Arc measures of all three pieces are congruent. What is the measure of angle XYZ

masya89 [10]

Answer:

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2 years ago

Read 2 more answers

15/45 and 45/135 simplified

iren2701 [21]

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3 years ago

if 5 litres of water are drawn from a cylindrical container of internal diameter 56cm find the drop in the level of water in the

AlexFokin [52]

Answer:

the drop in the level of water in the container is 2.03 cm

Step-by-step explanation:

The volume of a cylinder can be written as;

$V = \pi r^2h=\frac{\pi d^2h}{4} \\where;\\r = radius \\h = height \\d = diameter$

the change in height when the volume changes can be derived by differentiating the equation.

$dV =\frac{\pi d^2}{4} dh\\dh = dV\frac{4}{\pi d^2}$

substituting the given values;

$\left \{ {{dV=5 litres= 5000cm^3} \atop {d=56 cm}} \right.$

$dh = 5000\frac{4}{\pi * 56^2}\\dh = 2.03cm$

the drop in the level of water in the container is 2.03 cm

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3 years ago