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alexira [117]
3 years ago
10

Two added to three times a number m is the same as 18

Mathematics
2 answers:
vampirchik [111]3 years ago
8 0
2 + 3m = 18

3m = 16

m = 5.333333 ≈ 5.3
Minchanka [31]3 years ago
5 0
The correct answer is 5.3
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emmainna [20.7K]
The answer is 7/16 in decimal it would be 0.4375 hope this helps
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3 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
Three more than twice the sum of a number and half the number equals 105. Which equation models this relationship?
AlekseyPX

Answer:2(x+1/2x)+3=105

Step-by-step explanation: that is how i got my answer. If not a similar answer i would go with 2x+3=3x+105.

You can automatically eliminate the first answer. The second one has a random 5, so eliminated. and the last one just isn't correct.

7 0
3 years ago
Convert:<br> 38 inches = feet and inches all together
kirza4 [7]

Answer: 3 ft. and 2 inches

38÷12=3.2

12×3=36

38-36

8 0
3 years ago
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allochka39001 [22]

Answer:

is it absolute vaule?

Step-by-step explanation:

7 0
3 years ago
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