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svetoff [14.1K]
3 years ago
13

I did the first one I need help on this that’s all

Mathematics
2 answers:
True [87]3 years ago
7 0

The three angles of a triangle sum to 180 degrees.

Angle A + Angle B + Angle C = 180

(5x-25) + (2x+10) + (3x+5) = 180

Combine like terms:

10x -10 = 180

Add 10 to both sides:

10x = 190

Divide both sides by 10:

X = 190/10

X = 19

Now you have a value for x, find the angles:

Angle A = 5x-25 = 5(19)-25 = 95-25 = 70

Angle B = 2x +10 = 2(19) + 10 = 38 +10 = 48

Angle C = 3x +5 = 3(19) +5 = 57 + 5 = 62

70 + 48 + 62 = 180

Alenkasestr [34]3 years ago
6 0

Answer:

m<A = 70 deg

Step-by-step explanation:

The sum of the measures of the angles of a triangle is 180 deg. Add the three measures and set equal to 180. Solve for x. then use the value of x and the expression for m<A to find the measure of angle A.

m<A + m<B + m<C = 180

5x - 25 + 2x + 10 + 3x + 5 = 180

10x - 10 = 180

10x = 190

x = 19

m<A = 5x - 25 = 5(19) - 25 = 95 - 25 = 70

Answer: m<A = 70 deg

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Aleks04 [339]

5):  Rectangular  Flowerbed  

Total Area:

14m  *     10m

140m^2


Flower Bed Area:

10m  *   6m  

60m^2

Area of Path:

140m^2     -     60m^2

Answer  ======>    80m^2





4):  Area of Parallelogram:   4.5m^2

Area    =    B  *  H  =====>  2.5m *  1.8  ====> 4.5m^2

b  Base of the parallelogram  ====>   2.5m

h    Height  of the parallelogram ======>  1.8m

Answer   ======> Area ======>  4.5m^2



Hope that helps!!!!                                      Numbers 5 and 4 is done for you!!!!        

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4 years ago
1130. 973 to 3 significant number​
maxonik [38]

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Step-by-step explanation:

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3 years ago
A block of wood is a cube and has the dimensions shown in the diagram below.
quester [9]

Answer: the block volume is 125 cm

Step-by-step explanation:

4 0
3 years ago
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Dmitry_Shevchenko [17]

Hi!-0.041511 is the answer.

6 0
3 years ago
How do I go about solving this?
Stels [109]
Hello,

Here i am using vectors

\vec{AB}=\vec{DC}=3\vec{i}+3\vec{j}
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The quadrilater ABCD is a parallelogram:
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(these are proprieties of a parallelogram)
4 0
3 years ago
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