All categories

2 years ago

-28- (3x+4)=2(x+6)+x

Mathematics

1 answer:

Akimi4 [234]2 years ago

5 0

Answer:

-28-3x-4=2x+12+x

-32-3x=3x+12

6x=44

x=44/6=22/3

Step-by-step explanation:

You might be interested in

Someone makes 4 servings calls for flour 2/3 cups of how much flour is required to make 20 servings

Luden [163]

Step-by-step explanation:

4 servings = 2/3 cups of flour

=> 20 servings = 2/3 * (20/4) = 10/3 cups of flour.

Hence we need 10/3 cups of flour.

3 0

2 years ago

Read 2 more answers

The altitude of an equilateral triangle is 22 inches. Find the perimeter of the equilateral triangle. Leave answer as a simplifi

torisob [31]

The perimeter of the equilateral triangle will be 76.2 in

<u>Explanation:</u>

Altitude of an equilateral triangle, H = 22 in

Perimeter, p = ?

Let a be the side of the triangle

We know:

$H = \frac{a\sqrt{3} }{2} \\\\22 = \frac{a\sqrt{3} }{2} \\\\a = 25.4 in$

Perimeter = 3a

P = 3 X 25.4 in

P = 76.2 in

3 0

3 years ago

Use the quadratic formula to solve x2 + 9x + 10 = 0.<br> What are the solutions to the equation?

vampirchik [111]

Answer:

$\large\boxed{x=\dfrac{-9\pm\sqrt{41}}{2}}$

Step-by-step explanation:

$\text{The quadratic formula of}$

$ax^2+bx+c=0$

$\text{If}\ b^2-4a0,\ \text{then the equation has two solutions}\ x=\dfrac{-b\pm\sqrt{b^2-4ac}}{2a}\\=========================================$

$\text{We have}\ x^2+9x+10=0\\\\a=1,\ b=9,\ c=10\\\\\text{substitute:}\\\\b^2-4ac=9^2-4(1)(10)=81-40=41>0\qquad _{\text{two solutions}}\\\\\sqrt{b^2-4ac}=\sqrt{41}\\\\x=\dfrac{-9\pm\sqrt{41}}{2(1)}=\dfrac{-9\pm\sqrt{41}}{2}$

5 0

2 years ago

Read 2 more answers

Pls awnser this I need it

Lisa [10]

Answer:

-2k + 6

hope its right

-2k - (-5) + 1

You should always switch the signs to their opposites if you're mutiplying a negative such as the - (-5) Hope I make sense

-2k + 5 + 1

-2k + 6

4 0

2 years ago

What’s the answer ?

xxMikexx [17]

B 5x+20 hope this helps!!

8 0

2 years ago