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Masja [62]
3 years ago
13

Can someone please answer this question the person to get it right gets brainiest!

Mathematics
1 answer:
Georgia [21]3 years ago
6 0
I think I only know the answers to 4 and 5 :)

5 = 9a + 12b
4 = subtraction
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© A boy has N800. He spends N160. What
Anni [7]

Answer:

4/5

Step-by-step explanation:

800 - 160 = 640  \\   \frac{640}{800}  =  \frac{4}{5}

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I need some help please!!
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X is minus 30 over 7
So you can cross multiply and multiply the values.
Then you can solve it like a normal equation

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What is the slope of the line represented by the equation y = y=4/5x-3?
dedylja [7]

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4/5

Step-by-step explanation:

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Help pls.<br><br><br><br><br>sjjsususyshsusudjhsusushshhshsu<br>​
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Answer:

B

Step-by-step explanation:

4/5x+2<7/5x+5

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1. A boat is 18 ft away from a point perpendicular to the shoreline. A person stands at a point down the shoreline so that a 68°
slega [8]

Answer:

19.4 feet

Step-by-step explanation:

When calculating distances using perpendicular angles, we use trig functions such as Sin, Cos, and Tan.

  • Sine is defined in a perpendicular triangle as the ratio of the opposite side to the angle over the hypotenuse.
  • Cosine is defined in a perpendicular triangle as the ratio of the adjacent side to the angle over the hypotenuse.
  • Tangent is defined in a perpendicular triangle as the ratio of the opposite side over the adjacent side.

Because our angle and know side value are across from each other and we need to know the hypotenuse, we chose to use Sine.

We set up the equation sin (68) = \frac{18}{h}.

We isolate h by multiplying h across the equal sign and dividing sin (68) across as well. sin (68) = \frac{18}{h}\\hsin (68) = \frac{18}{h}*h\\hsin (68) = 18\\\frac{hsin (68)}{sin (68)} =\frac{18}{sin (68)} \\

And finally we have h=\frac{18}{sin (68)}. We input to calculator.

h=\frac{18}{0.92718} \\h=19.4 feet

See the attached picture below showing the shore with the boat out at sea and the position of the person.


8 0
3 years ago
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