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Phoenix [80]
3 years ago
12

Given that a = -2, b = 5 and c = -5 work out 2b - 3ac

Mathematics
2 answers:
lesantik [10]3 years ago
8 0

Answer:

- 20

Step-by-step explanation:

Given the expression

2b - 3ac ← substitute given values for a, b and c

= 2(5) - (3 × - 2 × - 5)

= 10 - 30

= - 20

Scilla [17]3 years ago
5 0

Answer:

-20 is the required answer

Step-by-step explanation:

2b-3ac

=2×5-3×-2×-5

=10-30

=-20

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3 years ago
If the hypotenuse is 10 and the adjacent is 3, which trig identity would you use?
77julia77 [94]

Answer:

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Step-by-step explanation:

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4 0
3 years ago
Ryan and miles are each saving money. Ryan starts with $150 in his savings account and adds $40 per week. Miles starts with $50
m_a_m_a [10]

Answer:

The answer to your question is 5 weeks

Step-by-step explanation:

Data

Ryan                                      Miles

$150                                      $50

each week = $40                  each week = $60

x = savings

y = time in weeks

Process

1.- Write an equation for Ryan savings

     x = 40y + 150

2.- Write an equation for Miles savings

    x = 60y + 50

3.- Solve the system by Equality

          40y + 150 = 60y + 50

- Solve for y

          40y - 60y = 50 - 150

                   -20y = -100

                         y = -100 / -20

                         y =  5

4.- Conclusion

After 5 weeks, they will have the same amount of money.      

8 0
3 years ago
1.03 divided by -10.3
Ivanshal [37]
-0.1 is your answer 
              __ -0.1_____________
                 I
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     ______I

     
4 0
3 years ago
A woman won a 4000​-m race with a time of 12.089 min. What was her​ rate?
Blizzard [7]

Answer:

330.88 m/min  

Step-by-step explanation:

rate = distance/time

        = 4000 /12.089

        = 330.88 m/min

8 0
4 years ago
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