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NeX [460]
3 years ago
8

150-5r>87.5 Il mark brainliest

Mathematics
2 answers:
Mashutka [201]3 years ago
8 0

Answer:

r < 12.5

Step-by-step explanation:

Given

150 - 5r > 87.5 ( subtract 150 from both sides )

- 5r > - 62.5

Divide both sides by - 5, reversing the symbol as a result of dividing by a negative quantity.

r < 12.5

maria [59]3 years ago
7 0

Answer:

r<12.5

Step-by-step explanation:

First, we need to isolate the variable so we subtract 150 from both sides.

-5r>-62.5

we then divide by -5 to get the value of x alone. Since this is an inequality and we are dividing by a negative we flip the inequality symbol. Remember to always flip the inequality symbol when dividing by a negative number.

R<12.5

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What are the zeros of the quadratic function f(x) = 2x2 – 10x – 3?
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Answer:

x=\frac{50+\sqrt{31}}{2},\frac{50-\sqrt{31}}{2}  are zeroes of given quadratic equation.

Step-by-step explanation:

We have been a quadratic equation:

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We need to find the zeroes of quadratic equation

We have a formula to find zeroes of a quadratic equation:

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x=\frac{(-10)^2\pm\sqrt{124}}{2\cdot 2}

x=\frac{100\pm\sqrt{124}}{4}

x=\frac{100\pm2\sqrt{31}}{4}

x=\frac{50\pm\sqrt{31}}{2}

Therefore, x=\frac{50+\sqrt{31}}{2},\frac{50-\sqrt{31}}{2}



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