Answer:
The length of the garden=14 feet
Step-by-step explanation:
<em>Step 1: Determine the dimensions of the garden</em>
length of the garden=x feet
width of the garden=(x-4) feet
<em>Step 2: Determine the area of the garden</em>
Area of the garden=length×width
where;
area=140
length=x
width=x-4
replacing'
x(x-4)=140
x²-4x-140=0, solve the quadratic equation;
x={-b±√(b²-4ac)}/2a
x={4±√4²-4×1×-140}/2×1
x={4±√(16+560)}/2
x={4±√576}/2
x=(4±24)/2
x=(4+24)/2=14, or (4-24)/2=-10, take x=14
The length=14 feet, width=(14-4)=10 feet
The length of the garden=14 feet
As there is 5 more girls than boys and b is the number of boys, the expression b + 5 represents the number of girls.
total there are 27 childrens
b + (b+5) = 27
b + b + 5 = 27
2b = 27 -5
b =22 / 2
b =11
so the number of boys there are 11 and girls are 11 + 5 = 16
and total is 16 + 11 = 27
Answer:
a
Step-by-step explanation:
Answer: 2+(-35)
Step-by-step explanation:
When finding which equation is equivalent to the one you have. It's best to find what your equation's answer is.
2-35 equals -33
So we need to find the other equation that equals the same, for that's "equivalent". When you're trying to add a positive and a negative together, you're actually subtracting them because of the negative. In which your answer would end up as a negative, and if the negative is the greater number, you subtract it that way. Sometimes it's good to use a number line so you don't mess up if you're gonna go that way.
See the attached picture:
