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evablogger [386]
3 years ago
9

Solve linear equations Solve for x -2(4x + 3) = 3(x + 1)

Mathematics
2 answers:
inna [77]3 years ago
7 0

Answer:

x = - \frac{9}{11}

Step-by-step explanation:

Given

- 2(4x + 3) = 3(x + 1) ← distribute parenthesis on both sides

- 8x - 6 = 3x + 3 ( subtract 3x from both sides )

- 11x - 6 = 3 ( add 6 to both sides )

- 11x = 9 ( divide both sides by - 11 )

x = - \frac{9}{11}

Mice21 [21]3 years ago
6 0
Answer: X = - 9/11

Step on step equations :
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Can someone help me with this please?
garri49 [273]

Answer:

EASY PEASY

Step-by-step explanation:

(5x-5)=(4x+10){being corresponding angles}

solve it now by arranging like

5x-4x=10+5

done

and the second is co-interior

8 0
2 years ago
What does X equal when the square root of six equals three times X
Alekssandra [29.7K]

Answer:

0.81649658092

Step-by-step explanation:

The square root of 6 equals 2.44948974278. Divide that by 3, and you are given 0.81649658092.

8 0
3 years ago
Read 2 more answers
Use the discriminant to determine the number of solutions to the quadratic equation 3x^2+5x=-1
kari74 [83]

Answer:

Two real distinct solutions

Step-by-step explanation:

Hi there!

<u>Background of the Discriminant</u>

The discriminant b^2-4ac applies to quadratic equations when they are organised in standard form: ax^2+bx+c=0.

All quadratic equations can be solved with the quadratic formula: x = \frac{{ - b \pm \sqrt {b^2 - 4ac} }}{{2a}}}.

When b^2-4ac is positive, it is possible to take its square root and end up with two real, distinct values of x.

When it is zero, we won't be taking the square root at all and we will end up with two real solutions that are equal, or just one solution.

When it is negative, it is impossible to take the square root and we will end up with two non-real solutions.

<u>Solving the Problem</u>

<u />3x^2+5x=-1<u />

We're given the above equation. It hasn't been organised completely in ax^2+bx+c=0, but we can change that by adding 1 to both sides to make the right side equal to 0:

3x^2+5x+1=0<u />

Now that we can identify the values of a, b and c, we can plug them into the discriminant:

D=b^2-4ac\\D=(5)^2-4(3)(1)\\D=25-4(3)(1)\\D=25-12\\D=13

Therefore, because the discriminant is positive, the equation has two real, distinct solutions.

I hope this helps!

4 0
3 years ago
How do you factor 45x^2+295x-140
Vaselesa [24]
I could explain it, but you have to ask me, other than that the answer is 5(x+7)(9x-4).
8 0
3 years ago
A roof has a cross section that is a right triangle. The diagram shows the approximate dimensions of this cross section. Find th
nordsb [41]

Answer:

5

Step-by-step explanation:

Area of right angle Triangle:

6.5 * 9 * 1/2 = 29.25

2nd way to find area:

1/2 * base * height

Since we have area and base:

1/2 * 11.1 * h = 29.25

= 5.27m

= 5m (nearest tenth)

8 0
3 years ago
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