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Ilia_Sergeevich [38]
2 years ago
15

Which expression is equivalent to the one below?

Mathematics
1 answer:
Citrus2011 [14]2 years ago
5 0

Answer:

B. 5*\frac{1}{7}

Step-by-step explanation:

5÷7 is also \frac{5}{7}--that divided sign is what the fractional bar represents in a fraction.

now multiply 5*\frac{1}{7}=\frac{5}{1}*\frac{1}{7}=\frac{5*1}{1*7}=\frac{5}{7}

both are the same result, so your answer is Choice B.

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I need help ASAP pleaseeeeeee!
sveticcg [70]

Hi!

The answer is one

When you solve this system of equations you get an answer for y and an answer for x.

It looks kinda like this: x=3, y=-4

Thus, your answer is one solution

I hope this helps!

Feel free to give brainliest if you think I deserve it!

4 0
2 years ago
A person is watching a boat from the top of a lighthouse. The boat is approaching the lighthouse directly. When first noticed, t
Zina [86]

check the picture below.


bearing in mind that there are 60 minutes in 1 degree, then 16°18' will be 16.3° and likewise 48°51' will be 48.85° if we convert those to degrees only.


\bf y=\cfrac{200}{tan(48.85^o)}~\hspace{10em}x=\cfrac{200}{tan(16.3^o)}-y \\\\\\ x=\cfrac{200}{tan(16.3^o)}-\cfrac{200}{tan(48.85^o)}\implies x\approx 683.95 - 174.78\implies x\approx 509.17

6 0
3 years ago
Ill give brainiest
mario62 [17]

Answer:

I got one

Step-by-step explanation:

C.converse of the corresponding angles postulate

∠1 = 58° ( alternate angles )

HOPE THIS HELPS:)

STAY SAFE

∠1 and ∠2 form a straight angle and are supplementary, thus

∠2 = 180° - 58° = 122°

8 0
2 years ago
angle 0 is in quadrant 1 with sin0 = 2/5. Use the Pythagorean identity, sin^2 0 + cos^2 0 = 1, to calculate the value of cos0 as
Gwar [14]
We know that
sin²x+cos²x=1
so 
clear cos x
cos x=(+/-)√[1-sin²x]

in this problem
<span>Angle 0 is in quadrant 1 -----> cos o and sin o are positive
</span>sin o=2/5
cos x=√[1-(2/5)²]----> cos o=√[1-4/25]----> cos o=√[21/25]---> cos o=√21/5

the answer is
cos o=√21/5

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2 years ago
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