What number multiplied by itself 3 times equals -1000
2 answers:
Answer: the number is x = -10
Step-by-step explanation:
We want a number X that when we multiply it by itself 3 times we get -1000
This is:
X*X*X = -1000
X^3 = - 1000
We can apply the cubic root to both sides of the equation, and get:
Then X = -10
And you can prove it by:
-10*-10*-10 = (-10*-10)*-10 = 100*-10 = -1000
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Answer:
The number of red pens is 20.
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Step-by-step explanation:
We are given that, the ratio of number of red pens to the number of blue pens is 5 : 1.
∴ Let us assume that the number of red pens be 5<em>x</em> and number of blue pens be <em>x</em>.
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Now, according to question :
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⇒
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