Of alberto’s total number of coins, 168 are quarters. describe two strategies you can use to find how many coins are not quarters. estimate the difference. then choose one strategy and solve.

Let the total number of coins is x,

∵ Out of total coins 168 are quarters,

Thus, the coins which are not quarters = total coins - coins which are

quarters

= x - 168,

Alternative method :

We can find the coins which are not quarters by adding any number to 168,

If the number after adding 168 gives the total number of coins,

Then that number would be the answer.

area of part 1:

a1=base*height/2=(8+2)*(8-2-2-1)/2=10*3/2=15 ft^2

area of part 2:

a2=length*width=(8+2)*1=10 ft2

area of part 3:

a3=length*width=8*2=16 ft2

total shaded area : a1+a2+a3=41 ft2

total area of the reactangle : a=16*8=128 ft2

total area of the nonshaded region : 128-41=87 ft2

let's solve your equation step-by-step.

24−3x=−27

step 1: simplify both sides of the equation.

24−3x=−27

24+−3x=−27

−3x+24=−27

step 2: subtract 24 from both sides.

−3x+24−24=−27−24

−3x=−51

step 3: divide both sides by -3.

−3x

−3

=

−51

−3

x=17

answer:

x=17

step-by-step explanation:

mark brainliest and have a great day!