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Gekata [30.6K]
3 years ago
14

Any question 1-4 please help me

Mathematics
1 answer:
Nadusha1986 [10]3 years ago
3 0
I can tell you how to work out 3)
so each side is 4 since 12÷3=4.
to work out the area you need the perpendicular height (line that goes through the middle of the triangle).
to do this you need SOHCAHTOA.
so in this case you use sine and angle is 60 since its an equilateral
sin 60=×÷4
x=sin 60 × 4
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On a snow day, Owen created two snowmen in his backyard. Snowman A was built to
faust18 [17]

Answer:

<u>The equations for each function:</u>

  • A(t) = 60 - 6t
  • B(t) = 42 - 3t

<em>The lines plotted, see attached</em>

<u>The point at which both the snowmen have same height:</u>

  • 60 - 6t = 42 - 3t
  • 6t - 3t = 60 - 42
  • 3t = 18
  • t = 6

<u>The required interval is </u>

  • t = [0, 6)

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3 years ago
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The line that is perpendicular to the line on the graph is y=3

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3 years ago
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Answer:

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5 0
3 years ago
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Help please. I don’t understand and my teacher didn’t bother to teach us any of this and my brain hurts!!!!
const2013 [10]

Answer:

  23.  42 m^2

  24.  144 ft^2

  25.  68 cm^2

Step-by-step explanation:

The teacher should not need to spend any time teaching this. The area of the total figure is the sum of the areas of its parts. You already know that. And, you already know how to compute the areas of triangles and rectangles.

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You may recall that the area of a triangle is ...

  A = 1/2bh

and the area of a rectangle with the same base and height is ...

  A = bh

So, a triangle with base b and height h has the same area as a rectangle with the same base (b) and half the height (h/2). Recognizing this makes these problems really simple.

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23. The base of the rectangle and triangle is 7 m. The height of the triangle is 4 m, so its area is equivalent to adding 4/2 = 2 m to the 4 m height of the rectangle. Then the total area is ...

  A = (7 m)(4 m +(1/2)(4 m)) = (7 m)(6 m) = 42 m^2

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24. Since there are two identical triangles of height 5, their total area is equal to that of a rectangle of height 5.

  A = (12 ft)(7 ft +5 ft) = 144 ft^2

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25. The 5 cm height of the triangle makes it have an area equivalent to a rectangle 5/2 cm high.

  A = (8 cm)(6 cm +5/2 cm) = 68 cm^2

Note: we have read the fuzzy numbers as 8 cm wide, 6 cm high for the rectangle, and 5 cm high for the triangle. If your figure is different, please use the appropriate numbers in the calculation.

8 0
3 years ago
A flagpole casts a showdown 15 feet long the 6 foot tall man casts a shadow 4 feet long how tall is the flag pole
Neko [114]
Set it up as a ratio:
mans shadow over mans height (4/6 ) equals flag pole shadow over flag pole height (15/x)

set them to equal each other:

4/6 = 15/x

cross multiply: 4*x =4x, 15*6 = 90

so you have 4x = 90

now divide both sides by 5 to solve for x, which is the height of the flag pole:

x = 90 / 4 = 22.5 feet tall
5 0
3 years ago
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