Answer:
Step-by-step explanation:
The four walls have a linear length of (9 m)×4 = 36 m. Of that, the two 1-meter doors are not painted, so the linear length of the painted area is 34 m. The painted area is 2 m high, so the total area being painted is ...
A = LW
A = (34 m)(2 m) = 68 m²
The amount of paint needed for this area is ...
(68 m²) × (1 L/(10 m²) = 6.8 L
If we assume the paint only comes in units of 1 L, then Heather will need 7 L of paint.
The cost of 7 L of paint is ...
(7 L) × ($3.75/L) = $26.25
Heather will need 7 L of paint, for a total cost of $26.25.
Answer: $15.94
Step-by-step explanation:
You divide 23.91 by three, then subtract using the previous answer which was 7.97. 7.97 was 1/3 of 23.91. When subtracted you get, 15.94.
Percentages can be used for discounts in shops - 50% off cookies
For bank interest rates - 2.78% p.a.
Sales tax - $50 coffee maker and the sales tax is 8%
Answer: circle
Step-by-step explanation:
because each point is the same from the center
Answer:
48
Step-by-step explanation:
x = -2 y =3
3x² - 2xy²
3(-2)² -2(-2)(3)²
square first
3*4 -2(-2)*9
multiplty from left to right
12-2(-2)*9
multiply from left to right again
12 -(-36) subtract using rule for integers that double minus is plus
12 + 36
48