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Tems11 [23]
4 years ago
13

50 POINTSwhat is 2^-4×r^3×s^-2 when r=-3 and s=5?Explain please..

Mathematics
2 answers:
Korvikt [17]4 years ago
5 0
You'll get -6.25
To find a negative power, put it 1 over it and remove the negative symbol. For example, to simplify 2^-4, we would do 1/2^-4, then remove the negative to get 1/2^4, which is 0.0625
Then you have that -3^3 is -27 (since -3*-3*-3 is -27). Then using the above method, you can simplify 5^-2 to 1/5^2, which is 0.4

0.0625*-27*0.4 is -27/400

:)
lesya [120]4 years ago
4 0
2⁻⁴ * r³ * s⁻² = r³ / (s⁴ * s²) = 1 / (2 * 2 * 2 * 2) * (r * r * r) * 1 / (s * s)

2^{-4}* r^{3} *s^{-2} =  \frac{ r^{3} }{ 2^{4} * s^{2} } =  \frac{r*r*r}{2*2*2*2*s*s}
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Step-by-step explanation:

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Josh leans the ladder against a side of her house which is 10 feet. If the base of the latter is 3 feet away from the house, how
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\sqrt{109}

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4 years ago
11. Which of the following equations has NO
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3 years ago
What is the answer to this? −1.3≥2.9−0.6r
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Answer:

Inequality Form:

r ≥ 7

Interval Notation:

[7, ∞)

Step-by-step explanation:

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Move all terms not containing r to the right side of the inequality.  

Subtract 2.9 from both sides of the inequality.

−0.6r  ≤ −1.3 − 2.9

Subtract 2.9 from −1.3.

−0.6r  ≤ −4.2

Divide each term by −0.6 and simplify.

      Divide each  term in −0.6r  ≤ −4.2 by −0.6. When multiplying or dividing both sides of an

      inequality by a negative value, f lip the direction of the inequality sign.

       −0.6r /−0.6 ≥  −4.2 /−0.6

       Cancel the common factor of −0.6.

                  −4.2

          r ≥    ______

                  −0.6

 Divide −4.2 by −0.6.

r ≥ 7

The result can be shown in multiple forms.

Inequality Form:

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