Answer:
5cm
Step-by-step explanation:
Answer: x=−1 or x=8
Step-by-step explanation: 7x−2=x2−10
Learn how to solve quadratic equations
Khan Academy Video: Solving a quadratic by factoring
Khan Academy Video: Quadratic Formula 1
Answer:
<h3>#1</h3>
<u>Rectangle area:</u>
<u>Given:</u>
<u>Find w:</u>
- 12w = 300
- w = 300/12
- w = 25 ft
<h3>#2</h3>
<u>Perimeter is the sum of side lengths:</u>
P = 2 1/4 + 5 2/5 + 5 17/20 =
2 + 5 + 5 + 1/4 + 2/5 + 17/20 =
12 + 5/20 + 8/20 + 17/20 =
12 + 30/20 =
12 + 1.5 =
13.5 ft
<h3>
#3</h3>
- Cost of a shirt = $19.99
- Number of shirts = 6
<u>Total cost:</u>
Answer:
MK = 14
Step-by-step explanation:
MK = ML + LK , substitute values
4x - 2 = 8 + x + 2
4x - 2 = x + 10 ( subtract x from both sides )
3x - 2 = 10 ( add 2 to both sides )
3x = 12 ( divide both sides by 3 )
x = 4
Thus
MK = 4x - 2 = 4(4) - 2 = 16 - 2 = 14
1. True, because you divide 10 and 28 by 2 to get 5/14
2. True because 6 is half of 12, so therefore it's equivalent to 1/2
3. And Yup, it's true, because you divide 2 and 14 by 2 to get 1/7.
I hope I helped :-)