3 years ago

URGENT!!! Help fast!!!

Mathematics

1 answer:

Mashutka [201]3 years ago

6 0

second graph from the left

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A student answers 90% of the questions on a math exam correctly. If she answers 27 questions correctly, how many questions are

alexandr1967 [171]

Answer:

30 questions

Step-by-step explanation:

You can discover this by doing 27 divided by . 90 which equals 30.

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Answer:

Step-by-step explanation:

Step 1 Answer: Yes, 3

Step 2 Answer: Yes, 5

Step 3 Answer: No

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10+10= hhihihhhiihihihih

svetoff [14.1K]

Answer:

10+10=1010

Step-by-step explanation:

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Prove 2√(x) + 1/√(x + 1) <= 2√(x+1) for all x in [0,inf)

EleoNora [17]

Start by multiplying each side of the inequality by $\sqrt{x + 1}$ and simplifying:

$2 \sqrt x + \frac{1}{\sqrt{x+1}} \leq 2 \sqrt{x + 1}$
$(2 \sqrt x + \frac{1}{\sqrt{x+1}})(\sqrt{x + 1}) \leq (2 \sqrt{x + 1})(\sqrt{x + 1})$
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$2 \sqrt{x^2 + x} + 1 \leq 2x + 2$
$2 \sqrt{x^2 + x} \leq 2x + 1$
$\sqrt{x^2 + x} \leq x + \frac{1}{2}$

From here, we can square both sides to get

$x^2 + x \leq (x + \frac{1}{2})^2$
$x^2 + x \leq x^2 + x + \frac{1}{4}$
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sleet_krkn [62]

Answer:

Step-by-step explanation:

6*2=12

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