Let <em>n </em>represent the date and <em>f(n)</em> represent the money on a specific day.
We see that the pattern is every day, we add $0.50 into our little piggy bank.
So on day 1, we get $0.50 and on day 2, we get $1.00. We can see it is a linear function and since in is increasing by $0.50, our slope <em>m </em>is $0.50.
So we get:
<em>f(n) = </em>0.5<em>n</em>
Let's test this. On day 3 we get:
<em>f(3) </em>= <em>0.5(3) </em>= 1.50
So it works! So our answer is:
<em>f(n) = 0.5n
</em><em />Hopes this helps!
Answer:
528 cm²
Step-by-step explanation:
The surface area of this prism comprises:
- 2 congruent triangles (the bases of the prism)
- 2 congruent rectangles (rectangle 1 and 2) - since the triangle has 2 sides of equal length
- 1 rectangle (rectangle 3)
Area of a triangle = 1/2 × base × height
= 1/2 × 16 × 6
= 48 cm²
Area of rectangle 1 / 2 = width × length
= 10 × 12
= 120 cm²
Area of rectangle 3 = width × length
= 16 × 12
= 192 cm²
Total Surface Area = 2 triangles + 2 rectangles + rectangle 3
= (2 × 48) + (2 × 120) + 192
= 96 + 240 + 192
= 528 cm²
Answer:
The answer is A.
Step-by-step explanation:
A. 3*(-9)= -27, 4*(-9)= -36, -27-(-36)= 9
B. 3*(-27)= -81, 4*(-9)= -36, -81- (-36) = -45
C. 3*3= 9, 4*9= 36, 9-36= -27
D. 3*(-3)= -9, 4*(-6)= -24, -9-(-24)= 15
I believe it takes 1 3/5 hrs for them to finish the job together
