Answer:
170
Step-by-step explanation:
you have to divide
Answer:
The length is 7 m
The width is 10 m
Step-by-step explanation:
length = x
width = 2x - 4
length * width = area
It is given that the area is 70 
From there
x * (2x - 4) = 70
- 4x = 70
- 4x - 70 = 0
- 2x - 35 = 0
Now we have a quadratic equation, which is a + bx + c = 0, where a 
0
In this equation a = 1, b = -2 and c = -35
Discriminant (D) formula is b² - 4ac
D = 
- 4 * 1 * (-35) = 144 > 0
This discriminant is more than 0, so there are two possible x
Their formulas are 
and 
= 
= -5 < 0 (the length of the rectangle has to be more than 0, so we don't use this x)
= 
= 7 > 0 (this one is right)
Calculating the dimensions
length = x = 7 (m)
width = 2x - 4 = 2 * 7 - 4 = 10 (m)
Answer:
According to the question z must be equal to 4. So value of a+b=z or a+b=4
Lets try each of the options
A) a+b
1.6+2.3=3.9 which is not equal to 4
So option a is not the asnwer.
B) a+b = 1.6+2.5= 4.1 which is not equal to 4
<em>C) a+b= 1.9+2.1= 4.00 which is equal to 4</em>
<em />
D) a+b= 2.1+3.4= 5.5 which is not eqaul to 4
<u>Thus, we have OPTION C AS THE CORRECT ANSWER</u>
Step-by-step explanation:
Ok so first you have to combine the like terms.
5x-2x-3=-2+17
3x-3=15
Add 3 to each side.
3x=18
Divide 18 by 3.
x=6
Hope this helps!
Answer:
it is either A OR B
Step-by-step explanation:
