1092cm².
Answer:
Solution given:
First Side (a)= 18cm
Second side (b)=8cm
length(l)=15cm
height(h)=12cm
slant height (c and d)=13cm
Now we have
Total surface area of the trapezoid prism
=2 × area of base + lateral surface area
=2*area of trapezoid +perimeter of trapezoid*length =2*½*h*(a+b)+(a+b+c+d)*l
=12(18+8)+(18+8+13+13)*15
=1092 cm^2
Total surface area of the trapezoid prism is <u>1</u><u>0</u><u>9</u><u>2</u><u>c</u><u>m</u><u>²</u><u>.</u>
Answer:
Step-by-step explanation:
(x + 2)² = (x - 1)(x + 14)
x² + 4x + 4 = x² + 13x - 14
-9x = -18
x = 2
Answer:
Step-by-step explanation:
Let c represent the number of child tickets sold. Then 2c-14 is the number of adult tickets sold, and total revenue is ...
5c +8(2c-14) = 728
21c -112 = 728 . . . . . . simplify
21c = 840 . . . . . . . . . . add 112
c = 40 . . . . . . . . . . . . . divide by 21
2c-14 = 66 . . . . . . . . . number of adult tickets sold
66 adult tickets and 40 child tickets were sold.
Answer:
I only know the answer for the first one
Step-by-step explanation:
(1ans)
a triangle is 180°
so 80+55=135
180-135=45
X=45°
Step-by-step explanation:
8-2÷x
it should be written like that