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tatyana61 [14]
3 years ago
8

What is the answer to 6x+15=3x+8

Mathematics
1 answer:
miskamm [114]3 years ago
6 0

Answer:

x = -7/3

Step-by-step explanation:

6x+15=3x+8

Subtract 3x from each side

6x-3x+15=3x-3x+8

3x+15 = 8

Subtract 15 from each side

3x+15-15 = 8-15

3x=-7

Divide each side by 3

3x/3 = -7/3

x = -7/3

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Step-by-step explanation:

Triangle 1 can have 30°, 75° and 75° angles whereas Triangle 2 can have 30°, 30° and 120° angles.

Since they do not have all 3 congruent angles, they are not similar.

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3 years ago
Trigonometry
Alchen [17]

The area of the triangle PQR is 17.6 square units.

Explanation:

Given that the sides of the triangle are PQ = 12 and PR = 3 and m\angle P = 78^{\circ}

We need to determine the area of the triangle PQR

<u>Area of the triangle:</u>

The area of the triangle can be determined using the formula,

\text {Area}=\frac{1}{2} qr \sin P

Substituting the values, we get,

\text {Area}=\frac{1}{2}(12)(3) \sin 78

Simplifying, we have,

\text {Area}=\frac{1}{2}(36)(0.98)

Multiplying the terms, we have,

\text {Area}=\frac{35.28}{2}

Dividing, we get,

\text {Area}=17.64

Rounding off to the nearest tenth, we have,

Area=17.6

Thus, the area of the triangle PQR is 17.6 square units.

3 0
3 years ago
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Write 3x-7+2(2x-7) as the product of 7 and another factor
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