The rule when multiplying two negative numbers is that, the negative signs will cancel each other. That is, minus multiplied by minus will give as plus.

For example, -a × -b = ab

Also, "plus" multiplied by "minus" will also give as "minus. For example:

-a × b = -ab.

Using the above rule, let's find the product of the following:

−3 × 5 × (−6) × 4 = -15 × (-24)

−3 × 5 × (−6) × 4 = 360 [minus × minus = plus]

−7 × (−3) × (−9) × 0 = 0 [anything multiplied by 0 must result to 0]

−4 × (−6) × (−3) × (−5)

= 24 × 15

−4 × (−6) × (−3) × (−5) = 360

−3 × 4 × (−2) × (−7)

= -12 × 14

−3 × 4 × (−2) × (−7) = -168

Therefore, the product that will give a negative answer is: −3 × 4 × (−2) × (−7) = -168.

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7 0

2 years ago

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Assume that y varies inversely with x. If y= 1.6 when x= 0.5, find x when y= 3.2

solniwko [45]

Answer:

x = 0.25

Step-by-step explanation:

If y varies inversely with x, then:

$y \propto \dfrac{1}{x} \implies y=\dfrac{k}{x} \quad \textsf{(for some constant k)}$

Given:

y = 1.6 when x = 0.5

Substitute the given values into the found equation and solve for k:

$\implies 1.6=\dfrac{k}{0.5}$

$\implies k=1.6(0.5)$

$\implies k=0.8$

Therefore:

$y=\dfrac{0.8}{x}$

To find the value of x when y = 3.2, substitute y = 3.2 into the found equation and solve for x:

$\implies 3.2=\dfrac{0.8}{x}$

$\implies x=\dfrac{0.8}{3.2}$

$\implies x=0.25$

4 0

2 years ago

Susie drank 2 Gatorade bottles on Monday. On Tuesday, she drank three times as many Gatorade bottles. How many Gatorade bottles

Setler [38]

Answer:

g ➗ by 3 = 2

Step-by-step explanation:

6 0

3 years ago