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Genrish500 [490]
3 years ago
8

3(x + 2) + 4(x - 5) = 10

Mathematics
2 answers:
kondaur [170]3 years ago
6 0

Answer:

24/7

Step-by-step explanation:

dexar [7]3 years ago
6 0

Answer:

m the answer is

=2 4 out of 7

 

Step-by-step explanation:

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Does dose anyone know how to solve this?
solniwko [45]

Answer:

Width of rectangle = 6 m

Length of rectangle = 11 m

Step-by-step explanation:

Let width of rectangle = w

Length of rectangle = 3w-7

Area of rectangle = 66 m²

We need to find length and width of rectangle

The formula used is: Area=Length \times Width

Putting values and finding w

Area=Length \times Width\\66=(3w-7)(w)\\66=3w^2-7w\\3w^2-7w-66=0\\

Solve using quadratic formula: w=\frac{-b\pm\sqrt{b^2-4ac}}{2a}

We have a=3, b=-7, c=-66

Putting values and finding w

w=\frac{-b\pm\sqrt{b^2-4ac}}{2a}\\w=\frac{-(-7)\pm\sqrt{(7)^2-4(3)(-66)}}{2(3)}\\w=\frac{7\pm\sqrt{49+792}}{6}\\w=\frac{7\pm\sqrt{841}}{6}\\w=\frac{7\pm29}{6}\\w=\frac{7+29}{6}\:,\:w=\frac{7-29}{6}\\w=6, w=-3.6

We get values of w as w=6 and w=-3.6

As we know width cannot be negative, so considering w = 6

So, Width = 6

Length = 3w-7 = 3(6)-7 = 18-7 = 11

So, Width of rectangle = 6 m

Length of rectangle = 11 m

6 0
3 years ago
PLZ, help me with this question.
Korolek [52]

Answer:

Intensity

Step-by-step explanation:

In physics, intensity of radiant energy is the power transferred per unit area, where the area is measured on the plane perpendicular to the direction of propagation of the energy.

8 0
3 years ago
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Triangle jkl is similar to triangle mno what is the perimeter of triangle<br> Mno
Alja [10]
This cannot be solved unless you provide the picture for further answering.
7 0
3 years ago
Please Help..........
Troyanec [42]
Your answer should be 31
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8 0
3 years ago
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Bess [88]
Hello, the answer is C
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3 years ago
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