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Nana76 [90]
3 years ago
15

CRITICAL THINKING Tell whether each statement is sometimes, always, or never true. Give an example or a counterexample for each.

Mathematics
2 answers:
Anettt [7]3 years ago
7 0

Answer:

34) sometimes

36) always

Step-by-step explanation:

34) counterexample:  4 - 10 = -6

Semenov [28]3 years ago
5 0
34) sometimes
36) always

Example: 5-9=-4
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Step-by-step explanation:

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How to solve the system of equations algebraically for all values of x, y, and z
stich3 [128]
4x -3y + z = -10...............(1)
2x +y + 3z =  0...............(2)
-x +2y - 5z = 17...............(3)

First we multiply 3*(2) and add it to (1) 
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Then we multiply -2*(2) and add it to (3) 
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Multiply  2*(5) and add it to (4)
-10x -22z = 34...................+(4).................> -12 z = 24 ..............>>> z = -2

Substitute z in (4)............> 10x +10(-2) = -10.............................>>> x = 1

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4 0
3 years ago
Given a cone with a volume of 288, and height 7 in., find the base radius of the cone. Use 3.14 for pi. Round your answer to the
jek_recluse [69]

Answer:

The radius of the base is r=6.3\ in

Step-by-step explanation:

we know that

The volume of a cone is equal to

V=\frac{1}{3}\pi r^{2} h

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V=288\ in^{3}

h=7\ in

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substitute and solve for r

288=\frac{1}{3}(3.14)r^{2} (7)

864=(3.14)r^{2} (7)

r^{2}=864/[(3.14)(7)]

r=6.3\ in

3 0
3 years ago
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