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sdas [7]
2 years ago
7

Which Theorem do you use to solve for D?

Mathematics
2 answers:
mixas84 [53]2 years ago
5 0

Answer:

D + 50 - 20 = 70

D = 70

Step-by-step explanation:

kirill115 [55]2 years ago
4 0
Angle sum property
d + d +50 + d - 20 = 180
3d = 180 - 50 +20
3d = 150
d = 150/3
d = 50
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3(2x+1)-2(x+1) is the same as
Dahasolnce [82]

Answer:

4x + 1 and 6x - 2x - 2 + 3

Step-by-step explanation:

we can expand and find 2 equations that are the same as this

one being 6x+3 -2x -2

and another being 4x + 1

hope this helps!

5 0
1 year ago
I will mark brainliest and give 50 points!!!!
hammer [34]
0.3 is x but I can’t see the full problem so I’m nit sure what they are asking
4 0
2 years ago
For
Dmitry [639]

Answer:

8 in^2.

Step-by-step explanation:

F = P * A

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8 0
2 years ago
Find the area of the shape shown below.
vlabodo [156]

Answer:

6cm^{2} (assuming the units is in centimetres)

Step-by-step explanation:

Hi, hope this helps!

Method 1:

Calculate this shape as a trapezium. This is a trapezium because it has one pair of parallel sides. The way to calculate the area of a trapezium is this:

- Half the sum of the parallel sides

- Multiply the perpendicular height between them

In this case, 4 and 2 are parallel, so we add them together (4 + 2 = 6) then we divide by two (6 ÷ 2 = 3). Then we multiply our answer by the perpendicular length between the two parallel sides (assuming the side on the left is at a right-angle, 3 x 2 = 6).

Method 2:

Calculate this shape as a rectangle + a triangle. If you split the shape so the pointy bit on the right becomes a triangle and the left becomes a square, you can calculate the area without knowing the formula for calculating a trapezium (see above ^).

- Area of the square / rectangle = length x width = 2 x 2 = 4

- Area of the triangle = 1/2 x length x width = 2 x 2 x 1/2 = 4 x 1/2 = 4 ÷ 2 = 2

Then we add the two areas together (4 + 2 = 6).

I hope this helped and I wasn't waffling on :)

Bluey

8 0
3 years ago
Read 2 more answers
10-root18/root2 = a+broot2
Sauron [17]

Step-by-step explanation:

\frac{10 -  \sqrt{18} }{ \sqrt{2} } = a + b \sqrt{2}

\frac{10}{ \sqrt{2} }   +  \frac{ -  \sqrt{18} }{ \sqrt{2} }

5 \sqrt{2}   + (  \frac{ -  \sqrt{18} }{ \sqrt{2} } ) \times  \sqrt{2}

a = 5 \sqrt{2}

b =  \frac{ -  \sqrt{18} }{ \sqrt{2} }

8 0
2 years ago
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