Answer:
a. ( 5 ) ( 0 ) − 2
= −2
b. ( 5 ) ( 1 ) + 8
= 13
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Let l = 22.5 cm, b = 10 cm and h = 7.5 cm
Surface area of each brick
= 2(lb + bh + lh)
= 2(22.5 × 10 + 10 ×7.5 + 7.5 × 22.5 cm²
= 2 (225 + 75 + 168.75) cm²
= 2(468.75) cm² = 937.5 cm²
Area that can be painted using the paint of container = 9.375 m² = 9.375 × 100 × 100 cm²
Number of bricks that can be painted


Hence, 100 bricks can be painted out of the paint given in the container.
Answer:
8
Step-by-step explanation:
7 x 8 = 56 56 - 4 = 52.
3 x 8 = 24 24 + 28 = 52
Answer:
the duration of this event is 4 hours
Step-by-step explanation:
This function is a quadratic one
let Δ be the dicriminant :
- a = -16
- b = 48
- c= 64
- Δ = 48²-4*(-16)*64 = 6400
so there are two values that satisfy -16t²+48t+64 = 0 x and y
- x= (-48+80)/-16*2 = -1
- y= (-48-80)/-16*2= 4
x<0 so w won't take it since time is a positive value here
so t = y = 4h
Answer: r
5
Step-by-step explanation: If you need it quick then no explanation, but brainliest please?