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OLga [1]
1 year ago
14

I need help plssss..

Mathematics
1 answer:
maw [93]1 year ago
5 0

6x+42°=180°(ANGLES ON A STRAIGHT LINE)

6x = 180 - 42 \\ 6x = 138 \\  \frac{6x}{6}  =  \frac{138}{6}  \\ x = 23

IF DF IS PERPENDICULAR TO AC IT MEANS m<DBC =90°

IF DF IS PERPENDICULAR TO AC IT MEANS m<DBC =90°m<DBE+m<EBC= m<DBC

IF DF IS PERPENDICULAR TO AC IT MEANS m<DBC =90°m<DBE+m<EBC= m<DBCm<DBE+18°=90°

IF DF IS PERPENDICULAR TO AC IT MEANS m<DBC =90°m<DBE+m<EBC= m<DBCm<DBE+18°=90°m<DBE =90°-18°

IF DF IS PERPENDICULAR TO AC IT MEANS m<DBC =90°m<DBE+m<EBC= m<DBCm<DBE+18°=90°m<DBE =90°-18°mDBE=72°

Hope THIS helps

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Reduce to simplest form.<br> -3/2 - 3/8
svetlana [45]

Answer:

hope this help you a lot

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7 0
3 years ago
AJ purchased a new TV for $1200. The regular price of the TV was $1500.what percent did AJ save buying it on sale ?
svet-max [94.6K]

A. 20%


Work: 1500 x .20 = 300

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Hope this helps!

4 0
3 years ago
,does a polygon usually have more sides or angles.explain
Advocard [28]


they have the same amount of sides as they do angles,

5 0
2 years ago
The sides of a rhombus with angle of 60° are 6 inches. Find the area of the rhombus.
ehidna [41]
1. Check the drawing of the rhombus ABCD in the picture attached.

2. m(CDA)=60°, and AC and BD be the diagonals and let their intersection point be O.

3. The diagonals:
     i) bisect the angles so m(ODC)=60°/2=30°

     ii) are perpendicular to each other, so m(DOC)=90°

4. In a right triangle, the length of the side opposite to the 30° angle is half of the hypothenuse, so OC=3 in.

5. By the pythagorean theorem, DO= \sqrt{ DC^{2}- OC^{2} }=  \sqrt{ 6^{2}- 3^{2} }=\sqrt{ 36- 9 }=\sqrt{ 27 }= \sqrt{9*3}= 
=\sqrt{9}* \sqrt{3} =3\sqrt{3}  (in)

6. The 4 triangles formed by the diagonal are congruent, so the area of the rhombus ABCD = 4 Area (triangle DOC)=4*\frac{DO*OC}{2}=4 \frac{3 \sqrt{3} *3}{2}==2*9 \sqrt{3}=18 \sqrt{3} (in^{2})

6 0
3 years ago
Christofle is making a doll house the doll house 6/10 meter high without the roof.Thelp roof is 15/100 meter high what will them
Alja [10]
You have to change the denominator of 6/10 into 100 then you will get 60/100 then you add 15/10+60/100
5 0
3 years ago
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