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ololo11 [35]
3 years ago
15

2/3(12x+30)-12=0.4(15x+10)

Mathematics
2 answers:
nikdorinn [45]3 years ago
7 0
Isolate the variable by dividing each side by factors that don’t contain variable.

Answer: x = -2

Hope this helps!
Have a great day!
Dmitry_Shevchenko [17]3 years ago
5 0

Step-by-step explanation:

2/3 (12x+30)-12=4/10 (15x+10)

30×2/3 (12x+30)-12×30=4/10 (15x+10)×30

10(12x+30)-360 =12 (15x+10)

120x+300-360=180x+120

300-360-120=180x-120x

-180=60x

-180/60=60x/60

-30=x

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(02.02 MC) Triangle ABC is shown. A is at negative 2, 1. B is at negative 1, 4. C is at negative 4, 5. If triangle ABC is reflec
Bezzdna [24]

Given:

The vertices of a triangle ABC are A(-2,1), B(-1,4) and C(-4,5).

Triangle ABC is reflected over the x‐axis, reflected over the y‐axis, and rotated 180 degrees.

To find:

The point B'.

Solution:

If a figure reflected over x-axis, then

(x,y)\to (x,-y)

B(-1,4)\to B_1(-1,-4)

If a figure reflected over y-axis, then

(x,y)\to (-x,y)

B_1(-1,-4)\to B_2(-(-1),-4)

B_1(-1,-4)\to B_2(1,-4)

If a figure rotated 180 degrees about the origin, then

(x,y)\to (-x,-y)

B_2(1,-4)\to B'(-(1),-(-4))

B_2(1,-4)\to B'(-1,4)

So, the coordinate of point B' are (-1,4).

Therefore, the correct option is A.

6 0
3 years ago
Sally is trying to decide whether this triangle is a right triangle, so she measures the third side. The triangle is RIGHT if th
Sophie [7]

Answer:

Step-by-step explanation:

The answer is 12 inches

6 0
4 years ago
Find all the real square roots of 0.0036
amm1812
The square root of 0.0036 can be calculated through the calculator. The answer is 0.06. WE can also take by the eye the square root of 0.0036 in which the square root of 36 is 6. The number must be greater than 0.0036. The answer is 0.06.
7 0
3 years ago
(Answer with steps please)
77julia77 [94]

Answer:

Step-by-step explanation:

a). Total surface area of cylinder is defined by sum of curved surface area and surface area of the top and bottom.

Total surface area = 2πrh + 2πr²

Skateboarders use a half pipe structure which are not closed at the ends.

Therefore, curved surface of the half pipe = \frac{2\pi rh}{2}

                                                                      = πrh

b). If r = 2.5 m and h = 9 m,

Curved surface area of the half pipe = π(2.5)(9)

                                                             = 70.69 m²

                                                              ≈ 71 m²

4 0
3 years ago
Need help on this for brainliest
Arisa [49]

Answer:

Your answer is letter d

Step-by-step explanation:

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3 years ago
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