Since quadratic coefient is 1 (term in front of x^2)
take 1/2 of linear cofient (12) and square it
12/2=6, 6^2=36
add that to both sides
x^2+12x+36=-11+36
factor perfect square
(x+6)^2=25
sqrt both sides and take positiv and negative roots
x+6=+/-5
minus 6 both sides
x=-6+/-5
x=-6+5 or x=-6-5
x=-1 or -11
answer is {-11,-1}
Answer:
7.722cm^2, x=129
Step-by-step explanation:
12*12=144- area of the whole square
the diameter for the circle is 12
radius is 6
Area for circle= pi* r²
3.142*6^2=113.112
144-113.112=30.888
30.888/4=7.722
Answer:
6 0r 9
Step-by-step explanation:
15 - 6 is 9 if Joe has 15 pennies and put 6 in one bag and 9 in the other Ben he could either grab a bag of six pennies or grab a bag of 9 pennies
Answer:
2.92
Step-by-step explanation:
Normal price
4 * 6.98 =27.92
Sale price
2 for 12.50 means 4 at 2* 12.50
2*12.50 = 25
Subtract
27.92-25=2.92
He saved 2.92
<span><span>5x+3y=4</span><span>5x+3y=4</span></span>Rewrite in slope-intercept form.Tap for more steps...<span><span>y=−<span>53</span>x+<span>43</span></span><span>y=-<span>53</span>x+<span>43</span></span></span>Using the slope-intercept form, the slope is <span><span>−<span>53</span></span><span>-<span>53</span></span></span>.<span>m=−<span><span>53</span></span></span>