2 years ago

Write in standard form 4.91E-2

Mathematics

1 answer:

anzhelika [568]2 years ago

6 0

Answer:

4.91e-2 in decimal form is 0.0491

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In ΔMNO, the measure of ∠O=90°, the measure of ∠N=70°, and OM = 3.3 feet. Find the length of MN to the nearest tenth of a foot.

QveST [7]

Answer:3.5

Step-by-step explanation:

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3 years ago

Solve this for Brainliest! See the attachment [Level - GCSE]

madreJ [45]

Answer:

$x = 3 + 4\sqrt{3}$

Step-by-step explanation:

OPQ is a right angle triangle.

Using Pythagoras

$x^{2} + (x+5)^{2} = (x+8)^{2}\\x^{2} + x^{2} + 10x +25 = x^{2} + 16x + 64\\x^{2} + x^{2} - x^{2} + 10x - 16x + 25 - 64 = 0\\x^{2} - 6x -39 = 0$

Using quadratic formula

$x = \frac{-b \± \sqrt{b^{2}-4ac}}{2a}\\x = \frac{-(-6) \± \sqrt{(-6)^{2}-4(1)(-39)}}{2(1)}\\x = \frac{6}{2} \± \frac{\sqrt{192}}{2}\\x = 3 \± \frac{8\sqrt{3}}{2}\\x = 3 \± 4\sqrt{3}$

$x = 3 + 4\sqrt{3} = 9.928(4s.f.)$

$x = 3 - 4\sqrt{3} = -3.928(4s.f.)$ (Length can't be negative)

∴ $x = 3 + 4\sqrt{3}$

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2 years ago

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N-6 divided by 3 = -4 what is n

puteri [66]

-6 is the answer that you want

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2 years ago

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Terrion and Johnny are racing across the football field during practice. Terrion has run 89/100 of the field, and Johnny has run

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They ran it equally

Step-by-step explanation:

89/100 equals 0.89: 89 divided by 100 = 0.89.

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2 years ago

15÷276 i need to know for math homework its kinda hard to do

Stells [14]

Answer:

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(i am not fully sure)

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