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andrezito [222]
4 years ago
11

How can I verify that a value for a variable is correct?​

Mathematics
1 answer:
jeka57 [31]4 years ago
3 0

Answer:

In problems involving proportions, we can use cross products to test whether two ratios are equal and form a proportion. To find the cross products of a proportion, we multiply the outer terms, called the extremes, and the middle terms, called the means.

Step-by-step explanation:

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6.8 is the answer!!!!
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3 years ago
Factor the polynomial F(x) =x^3-x^2-4x+4 completely.
Norma-Jean [14]

Answer:

Step-by-step explanation:

PART 1:

Possible roots by noticing the coefficient of first term:

x = 1, -1

PART 2:

1 | 1  -1  -4   4

 <u>      1   0  -4</u>

   1   0  -4  0

The remainder is zero, hence one factor is (x-1)

PART 3:

x^3-x^2-4x+4=(x^2-4)(x-1)\\\\x^3-x^2-4x+4=(x+2)(x-2)(x-1)

PART 4:

f(x)=(x+2)(x-2)(x-1)\\\\=(x^2-4)(x-1)\\\\=x^3-4x-x^2+4\\\\=x^3-x^2-4x+4

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3 years ago
Which is great 1.1 or 1.403
satela [25.4K]
1.403 > 1.1
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3 0
3 years ago
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a satellite cable company charges an installation fee of $50 plus an additional $35.95 per month for service
SashulF [63]
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The value of y varies directly with x and inversely with
Pani-rosa [81]

Answer:

x = 45 when y = 20 and z = 6

Step-by-step explanation:

The general formula here is y = kx/z²

If x = 24 and y = 6, z = 8, so:

y = kx/z² becomes 6 = k(24)/8², and:

             6                   1

k = ---------------- = -------------- = 16

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Then y = 16x/z², and so, if y = 20 and z = 6 (check this!), then:

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3 0
3 years ago
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