Answer:
A=2(1+2)a2=2·(1+2)·22≈19.31371
Step-by-step explanation:
hope this helps!
10 is your common difference
Answer:
x=-15
Step-by-step explanation:
50=-10(x+10)
Distribute 10: 50=-10x-100
Add 100 to both sides: 100+50=-10x-100+100
150=-10x
Simplify: 150/-10=-10x/-10
x=-15
We can see that OW/IG = 5/15 = 1/3 and CW/PG = 7/21 = 1/3. So we have two ratios that result in the same value (1/3). We would need to know if CO/IP is also 1/3 as well, so we can use the SSS similarity theorem. However we don't have that information. So we can't use SSS.
Alternatively, if we knew that angle CWO = angle PGI, then we can use the SAS similarity theorem. But that bit of info isn't given to us, so we can't use SAS either.
AA can't be used because we don't know anything about any pairs of angles.
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In short, the answer is choice D. It cannot be determined. There isn't enough information.
For this question, we must use BIDMAS
Brackets
Indices
Division
Multiplication
Addition
Subtraction
26.6 x 24.4 / 5.67 x 4.02
First, round all the values to their first significant figure
30 x 20 / 6 x 4
The first occurring operation in BIDMAS is Division
20/6 = 3 1/3
Now do the multiplication
30 x 3 1/3 x 4 = 400
Or you can round to the nearest whole number (although it can be more difficult if doing sums in your head)
27 x 24 / 6 x 4
27 x 4 x 4
27 x 16 = 432
The more accurately you round, the closer the estimation is to the actual answer (≈460)
1 Sig Fig = 400
Whole number = 432
