Answer:
<1 = 55 degrees and <2 = 35 degrees
Step-by-step explanation:
Sum of complementary angles is 90.
<1 = 3x + 10
<2 = 4x - 25
3x + 10 + 4x - 25 = 90
7x - 15 = 90
7x = 105
x = 15
<1 = 3(15) + 10
<1 = 55
<2 = 4(15) - 25
<2 = 35
Parentheses ()
Exponents ^x
Multiplication/Division */
Add/Subtract +-
12-3(10+23):9x(-2)
(I don’t understand the “:” but it is right next to the / sign, so I will solve like that)
Answer: c. OSRN
Step-by-step explanation:
Sides of similar shapes are proportional.
For Rectangle LOSP,
Length = LO = 4+6+8 = 18 units
Width = OS= 12 units
Here,
[proportionality constant]
a. For Rectangle LMQP,
Length = MQ = 12 units
Width = LM = 4 units
Here, 
LMQP is not similar to LOSP.
b. Similarly, for LNRP,
Width = LN= 4+6 = 10
length = NR = 12

LNRP is not similar to LOSP.
c. For OSRN,
Length = OS = 12
Width = ON = 8

OSRN is similar to LOSP.
d. For MNRQ,
Length= NR = 12
Width = MN = 6

MNRQ is not similar to LOSP.
Hence, the shape similar to rectangle LOSP is OSRN.
It's 0.4825 time 100 equal 48.25
20 is the answer to that!
:D