Solve- 21-5 y - 41 -A- y - 4B- y -4- y - 4D- y -4

The correct option is A y≥421+5y≥41 ⇒21 21+5y≥41 21 (subtracting 21 from both sides) ⇒ 5y≥20 dividing both sides by 5 doesn't change the sign of the inequation ...

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Byju's Answer

Standard VII

Mathematics

Solution of Inequations

Solve: 21+5 y...

Question

Solve: $21 + 5 y \geq 41$ .

y \geq 4

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y > 4

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y \leq 4

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y < 4

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Solution

The correct option is A $y \geq 4$
$21 + 5 y \geq 41 \Rightarrow 21 - 21 + 5 y \geq 41 - 21 (subtracting 21 from both sides) \Rightarrow 5 y \geq 20 dividing both sides by 5 doesn't change the sign of the inequation \Rightarrow \frac{5 y}{5} \geq \frac{20}{5} \Rightarrow y \geq 4$

Suggest Corrections

Solve: 21+5y≥41.

The correct option is A y≥421+5y≥41⇒21−21+5y≥41−21(subtracting 21 from both sides)⇒5y≥20dividing both sides by 5 doesn't change the sign of the inequation⇒5y5≥205⇒y≥4

Solve: $21 + 5 y \geq 41$ .

The correct option is A $y \geq 4$
$21 + 5 y \geq 41 \Rightarrow 21 - 21 + 5 y \geq 41 - 21 (subtracting 21 from both sides) \Rightarrow 5 y \geq 20 dividing both sides by 5 doesn't change the sign of the inequation \Rightarrow \frac{5 y}{5} \geq \frac{20}{5} \Rightarrow y \geq 4$