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choli [55]
2 years ago
15

Plz help will mark you as brainliest(plz answer 42 and 43​

Mathematics
1 answer:
Lisa [10]2 years ago
3 0

Answer:

  • 41. D,
  • 42. B,
  • 43. A

Step-by-step explanation:

Sides are 120 m, 170 m, 250 m

<h3>41.</h3>

<u>S is the semi-perimeter and is equal to:</u>

  • s = (a + b + c)/2 = (120 + 170 + 250)/2 = 270 m

Correct choice is D

<h3>42.</h3>

The area is easy to calculate using the Heron's formula, since we have all three side lengths known.

Correct choice is B

<h3>43.</h3>

<u>Perimeter is:</u>

  • P = a + b + c = 120 + 170 + 250 = 540 m

Correct choice is A

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ruslelena [56]

Answer:

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Step-by-step explanation:

The tangent function is periodic with a period of π, so ...

  tan(5π/6) = tan(5π/6 ± kπ) . . . for any integer k

For k = -1, we have ...

  tan(5π/6) = tan(5π/6 -π) = tan(-π/6)

7 0
3 years ago
What is the equation in point slope form of a line that passes through the point (–8, 2) and has a slope of 1/2?
Kamila [148]
Point slope equation: 
y-y1=m(x-x1) 
m=slope

So we simply plug in our given information: 
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2 minus signs next to each other make a positive 

Final answer: 
y-2=1/2(x+8)
6 0
2 years ago
Write an expression for the perimeter of the house use the work you completed in parts A and B to guide you (the numbers in the
Bas_tet [7]

Answer:

The total length of Valerie’s walls is (2.5 × 4) + (21.25 × 3) + 32.

The total length of Seth’s walls is 3.5 + (22.75 × 2) + 58.

To find the expression for the perimeter of the house, add Valerie’s expression to Seth’s:

(2.5 × 4) + (21.25 × 3) + 32 + 3.5 + (22.75 × 2) + 58.

Step-by-step explanation:

its the platho answer so change it a bit

8 0
2 years ago
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Answer:

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2 years ago
How many 3cm cubes can be put in a box 3cm long 6cm wide 12cm high?
lisov135 [29]

Answer:

8

Step-by-step explanation:

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7 0
2 years ago
Read 2 more answers
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