The solutions are:
x = −4,x = 7
Explanation:
X^2−3x−28= 0
We can first factorise this expression by splitting the middle term and then find the solutions:
= x^2−7x+4x−28=0
= x( x−7) + 4( x − 7)=0
=(x+4)(x−7)
Now, we can equate the two factors with zero and find the solutions:
x+4=0,x =−4x−7=0,x=7
Answer:
B. 24
Step-by-step explanation:
- This is a simple ratio.
- If 1 mile = 0.05 gallons of gasoline, then 480 miles = 24 gallons of gasoline!
To find the width, divide the area by the length:
27 / 6 = 4.5
The width is 4.5 inches.
Answer:
-0.8+r=12.6
r=12.6<em><u>+</u></em><em><u>0</u></em><em><u>.</u></em><em><u>8</u></em>
r=<em><u>1</u></em><em><u>3</u></em><em><u>.</u></em><em><u>4</u></em>
