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Norma-Jean [14]
3 years ago
12

3m^2-7m-40=0 solve by factoring

Mathematics
1 answer:
Natalija [7]3 years ago
8 0
........................

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2) The ratio of an exterior and an interior angle of regular polygon at a vertex is 2 : 7, the number of sides of the regular po
mina [271]

Answer:

Ext=2x

Int=7x

Int+ext=180

2x+7x=180

9x=180

x=20

Ext=2×20=40

No of sides =360/40

=9 sides.

I hope this helped you

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
3 3%4×2 4%5 anything with a % in between is a fraction
Andre45 [30]
10 1/2 I am pretty sure its right
8 0
3 years ago
What 2 factors of 120 either add or subtract to make 39
damaskus [11]
120/30=40-1=39
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7 0
4 years ago
Sakura purchased ski equipment for $1,248 using a six-month deferred payment plan. The interest rate after the introductory peri
just olya [345]
Hi there

For the first question use the formula of the present value of annuity due
The formula is
Pv=pmt [(1-(1+r/k)^(-n))÷(r/k)]×(1+r/k)
Pv present value?
PMT monthly payment 95
R annual interest rate 0.2379
K compounded monthly 12
N time 7 months

Pv=95×((1−(1+0.2379÷12)^(
−7))÷(0.2379÷12))×(1+0.2379÷12)
=627.45 closed to 637.13 because the question mentioned the minimum monthly payment which is 95 while the exact monthly payment of 637.13
Is 96.47


The second question is the same and easier using the formula of the present value of annuity ordinary
First find the present value by subtracting the amount of down payment From the purchase price
20,640−2,440=18,200
Now find the monthly payment using the formula of
Pv=pmt [(1-(1+r/k)^(-kn))÷(r/k)]
Solve for pmt
PMT=pv÷[(1-(1+r/k)^(-kn))÷(r/k)]
Pv 18200
R 0.104
K 12
N 5 years

PMT=18,200÷((1−(1+0.104÷12)^(
−12×5))÷(0.104÷12))
=390.29

Total paid amount of monthly payment times number of months in a year times the term of the loan to get
390.29×12×5
=23,417.28

Finally how much you paid including down payment
23,417.28+2,440
=25,857.40. ..answer

Good luck!

6 0
3 years ago
2. Lynn filled up her gas tank on the way home from work. She uses about 1.6
Gelneren [198K]

The amount of gas in her tank after 8 days given the linear equation g = 213 - 1.6d is 200.2 gallons of gas

<h3>Linear equation</h3><h3 />
  • Gallons of gas used per day = 1.6 gallons
  • Number of days = d
  • Quantity of gas = g

The equation

g = 213 - 1.6d

Gas remaining after 8 days

g = 213 - 1.6(8)

= 213 - 12.8

g = 200.2 gallons of gas

Learn more about equation:

brainly.com/question/1884491

#SPJ1

5 0
2 years ago
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