Answer:
8.) -120
9.) -5
10.) -1
Step-by-step explanation:
8.) ab - c
5(-12) - 60
-60 - 60 = -120
9.) -10 - (-7) + 2 (3 - 4)
-3 + 2(-1)
-3 + (-2) = -5
10.) Add all the numbers up then divide by how many numbers there are.
<span>1. write an algebraic expression for the word phrase ; the quotient of r and 12 . ( 1point )
A . r ./2
b. r*12
C. r - 12
D r + 12 IS THAT YOUR question ?
</span>
Answer:
Step-by-step explanation:
the discount is $3
the reason for this is
10% = 20÷10=2
5%= 2÷2=1
2+1=3
so the discount is $3
Given that the perimeter of rhombus ABCD is 20 cm, the length of the sides will be:length=20/4=5 cmthe ratio of the diagonals is 4:3, hence suppose the common factor on the diagonals is x such that:AC=4x and BD=3xusing Pythagorean theorem, the length of one side of the rhombus will be:c^2=a^2+b^2substituting our values we get:5²=(2x)²+(1.5x)²25=4x²+2.25x²25=6.25x²x²=4x=2hence the length of the diagonals will be:AC=4x=4×2=8 cmBD=3x=3×2=6 cmHence the area of the rhombus wll be:Area=1/2(AC×BD)=1/2×8×6=24 cm^2
Answer:
Total surface area : 207cm²
Volume : 550.8³
Step-by-step explanation:
Surface area, first need to work out the area of each face.
A box is symmetrical so some faces will be the same.
Area = Base × Height
Top/bottom : 9 × 6 = 54cm²
side/side = 6 × 10.2 = 61.2cm²
Front/Back = 9 × 10.2 = 91.8cm²
Add then all together
54 + 61.2 + 91.8 = 207cm²
Volume = base × height × width
9 × 6 × 10.2 =550.8cm³