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jarptica [38.1K]
3 years ago
7

How many solutions does the following equation have? -6(x + 7) = -4.x - 2

Mathematics
1 answer:
mestny [16]3 years ago
5 0

Answer:

x=-20

Step-by-step explanation:

Given

-6(x+7)= -4x - 2

First of all, we have to solve brackets

So,

-6x-42=-4x-2

To find the solution of this equation, we have to isolate x on one side of the equation.

Adding 4x on both sides

-6x-42+4x = -2-4x+4x

-2x-42 = -2

Adding 42 on both sides

-2x-42+42 = -2+42

-2x=40

Dividing both sides by -2

-2x/2 = 40/-2

x = -20

The equation has only one solution which is x=-20 ..

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How to calculate area when you are given volume of 182m3 and height of 2.8m<br>​
Elza [17]

Hey there!

We simply have to do 182/2.8, and you will get the area (65m^2).

We know that the formula for area is <u>length x width</u>, and the formula for volume is<u> length x width</u> x height. In the volume formula, we can see it can also be <u>area x height</u> to get <u>volume</u>. So, we know that<em><u> area x height = volume</u></em>, right? And in this equation, we are given volume and height. If          <u>V = ha</u>, with V = volume; h = height; a = area, we can divide "h" on both sides, and we get V/h = a, or volume divided by height is area. To solve for the above equation, we can plug the numbers in the formula: 182/2.8 = a, or 65 = a.

Hope this helps! Have an amazing day, and remember, you've got this!

4 0
3 years ago
A)k/t<br> B)l/m<br> C)l||m<br> D)m/t
Luda [366]
The answer is " l || m "
6 0
4 years ago
Find sin A, round to the nearest hundredth.
almond37 [142]

Answer:

.92

Step-by-step explanation:

sin A = opp side/ hypotenuse

       

We can use the Pythagorean theorem to find the hypotenuse

a^2 + b^2 = c^2  where a and b are the legs and c is the hypotenuse

3^2 +7^2 = AC ^2

9+49 = AC ^2

58 = AC^2

Taking the square root

sqrt(58) = hypotenuse

sin A = 7/sqrt(58)

sin A =.91914503

sin A = .92

6 0
3 years ago
Which of the following equations will yield the surface area of cylinder?
katovenus [111]

Answer: A=2\pi rh+2\pi r^2

8 0
3 years ago
if x-1 is a factor of P(x)=x^3- 5x^2 + 7x-3 which of the following represents the complete factorization for P(x)?​
kozerog [31]

Answer:

P(x) =  (x-1)² (x-3)

Step-by-step explanation:

P(x)=x³- 5x² + 7x-3 = x² (x-1) - 4x(x-1) + 3(x-1) = (x²-4x+3)(x-1)

P(x) = (x-1)(x-3)(x-1) = (x-1)² (x-3)

3 0
4 years ago
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