Answer:
a) Monica's error was she used the formula = Base × Height
This formula is wrong formula
b) The unit for area of a triangle is square inches not inches
Step-by-step explanation:
Monica has a triangular piece of fabric. The height of the triangle is 15 inches and the triangle's base is 10 inches. Monica says that the area of the fabric is 150 inches. What error did Monica make
The area of a triangle is = 1/2 × Base × Height
From the question
Base = 10 inches
Height = 15 inches
Area of the triangular fabric = 1/2 × 10 × 15
= 75 square inches
a) Monica's error was she used the formula = Base × Height
This formula is wrong formula
b) The unit for area of a triangle is square inches not inches
Answer: Shirts are $9 each and hats are $8 each
Step-by-step explanation:
Let S be the price of a Shirt, and H the price of a Hat.
First Week: 4S + 9H = $108
Today: 17S + 21H = $321
We have 2 equations and 2 unknowns (S and H). Rearrange one of the equations to isolate one of the unknowns. I'll rearrange the first for S:
4S + 9H = $108
4S = $108 - 9H
S = ($108 - 9H)/4
S = 27 - 2.25H
Now use this value of S in the second equation:
17S + 21H = $321
17(($27 - 2.25H) + 21H = $321
Solve for H:
459 -38.25H + 21H = $321
-17.25H = - 138
H = $8
Each hat was $8.
Use this value in the first equation to find S:
4S + 9H = $108
4S + 9*($8) = $108
4S + $72 = $108
S = $9
Each shirt was $9.
==
Check to see if the numbers give the correct results:
4*($9) + 9*($8) = $108
17*($9) + 21*($8) = $321
Both yield the correct amounts. Shirts are $9 each and hats are $8 each.
Answer:
.8
Step-by-step explanation:
4 and below rounds down
5 and up rounds up
.214=.2
.61=.6
.2+.6=.8
Answer:
8
Step-by-step explanation:
Answer:
90.2mm
Step-by-step explanation:
find the circumference and divide by two then add the two sides
circumference= 2πr=2π(16)
100.48/2= 50.24
50.24+20+20=90.24mm then round to 90.2