Answer:
134.9
General Formulas and Concepts:
<u>Pre-Algebra</u>
Order of Operations: BPEMDAS
- Brackets
- Parenthesis
- Exponents
- Multiplication
- Division
- Addition
- Subtraction
Step-by-step explanation:
<u>Step 1: Define</u>
9.1p + 8.9r
p = 7
r = 8
<u>Step 2: Evaluate</u>
- Substitute: 9.1(7) + 8.9(8)
- Multiply: 63.7 + 71.2
- Add: 134.9
Answer:
Es 14
Step-by-step explanation:
Tu pones el 6 en y. 6/6 es 1.
13 mas 1 is 14.
Problem 15
The general format for these types of problems is
A/B = C/D
One way to set things up is to notice how the horizontal sides are 15 and 6 for the large and small triangles respectively. So A/B = 15/6
At the same time, we can say C/D = 20/x since the longer diagonal is 20 and the shorter diagonal is x (notice how we divide in the same order of long over short)
A/B = C/D updates to 15/6 = 20/x
Cross multiply to solve for x
15/6 = 20/x
15*x = 6*20
15x = 120
x = 120/15
x = 8
<h3>Answer: x = 8</h3>
=====================================================
Problem 16
A = Long horizontal side = x
B = Short horizontal side = 24
A/B = x/24
C = long diagonal side of larger triangle = 20+12 = 32
D = short diagonal side of smaller triangle = 20
C/D = 32/20
-------
A/B = C/D
x/24 = 32/20
20x = 24*32
20x = 768
x = 768/20
x = 38.4
<h3>Answer: x = 38.4</h3>
side notes:
- 38.4 = 38 & 2/5 as a mixed number
- 38.4 = 192/5 as an improper fraction
Knowing that the line is parallel to another one with equation y = -2x+3, we know that the slope of this line (m) is -2. Plugging this into the point-slope equation
(y-b=m(x-a)), we get y+3=-2(x+4) as our answer.
Answer:
DE
Step-by-step explanation: