Step-by-step explanation: If she bought x amount of posters and had 12 left after, you'd multiply 12 by 2 and get 24. Half of 24 is 12. So Micaela bought 24 posters.

5 0

3 years ago

Read 2 more answers

The legs if an isosceles triangle are (3x^2+4x+2) inches and the base is (4x-5) inches. Find the perimeter of the triangle

alexdok [17]

Answer:

$P=(6x^2+12x-1)\ in$

Step-by-step explanation:

we know that

An isosceles triangle has two equal sides and two equal angles

The perimeter of triangle is equal to

$P=2(3x^2+4x+2)+(4x-5)$

Eliminate parenthesis

$P=6x^2+8x+4+4x-5$

Combine like terms

$P=(6x^2+12x-1)\ in$

4 0

3 years ago

Three consecutive whole numbers are such that if they be divided by 5,3 and 4 respectively, the sum of the quotient is 40. What

Alja [10]

$\dfrac{x}{5}+\dfrac{x+1}{3}+\dfrac{x+2}{4}=40\\
12x+20(x+1)+15(x+2)=2400\\
12x+20x+20+15x+30=2400\\
47x=2350\\
x=50\\
x+1=51\\
x+2=52$

Then umbers are 50,51,52

4 0

3 years ago