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3 years ago

Please answer please :)

Mathematics

2 answers:

KatRina [158]3 years ago

8 0

First one is 32.2 and the second one is -32.34

Licemer1 [7]3 years ago

4 0

39.4 + (-7.2) = 32.2

3.9 - 36.24 = -32.24

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What is the result when the number 100 is decreased by 10%?

Temka [501]

Answer:

10% of 100 is 90

Step-by-step explanation:

100 · 0.10 = 10

100 - 10 = 90

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2 years ago

Tennis balls with a diameter of 2.5 in.are sold in cans of three. The can is a cylinder. What is the volume of the space in the

Alexxandr [17]

Using 3.14 for PI.

The radius of a ball and the can is half the diameter = 1.25

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3 years ago

Given cos 0 = 11/6 and angle 0 is in Quadrant I, what is the exact value of sin 0 in

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In the first quadrant, the values for sin, cos and tan are positive.

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2 years ago

Are all vertical lines parallel?

BartSMP [9]

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3 years ago

The average weight of 3 containers A,B and C is 3.2kg. Container A is twice as heavy as container B. Containers B is 400 g heavi

dlinn [17]

Answer:

The weight of container C is 2.1kg.

Step-by-step explanation:

This question is solved using a system of equations.

I am going to say that:

x is the weight of container A.

y is the weight of container B.

z is the weight of container C.

The average weight of 3 containers A,B and C is 3.2kg.

This means that the total weight is 3*3.2 = 9.6kg. So

$x + y + z = 9.6$

Container A is twice as heavy as container B.

This means that $x = 2y$ .

Containers B is 400 g heavier than container C.

400g is 0.4kg. So

This means that $y = z + 0.4$ , or $z = y - 0.4$

Replacing y and z as functions of x in the first equation:

$x + y + z = 9.6$

$2y + y + y - 0.4 = 9.6$

$4y = 10$

$y = \frac{10}{4} = 2.5$

Container C

$z = y - 0.4 = 2.5 - 0.4 = 2.1$

The weight of container C is 2.1kg.

4 0

3 years ago