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dmitriy555 [2]
3 years ago
5

4.5(32 divided by 8) +12

Mathematics
1 answer:
Alexus [3.1K]3 years ago
3 0
The answer is

30
4.5 (4) + 12
18 + 12
30

99% Verified

Hope This Helps!

- AnswerKey74
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A dolphin swims 665,280 feet in 3 hours. Use the formula d = rt, where d represents distance, r represents rate, and t represent
liraira [26]

Answer:

Answers Below

Step-by-step explanation:

Part A:

r=d/t

Part B:

r=665280/3

r=221760

Part C:

221760/5280 = 42mph

Part D: Miles per Hour, because it is easier to understand

6 0
2 years ago
What are the roots of the equation 16x2 + 40x + 27 = 0 in simplest a + bi form?
bezimeni [28]

9514 1404 393

Answer:

  -5/4 +i(√2)/4 and -5/4 -i(√2)/4

Step-by-step explanation:

I find simplest form to be easier to get to if the leading coefficient is 1. Dividing by 16, we have ...

  x^2 +5/2x +27/16 = 0

Completing the square by adding and subtracting the square of half the x-coefficient, we get ...

  (x^2 +5/2x +25/16) +27/16 -25/16 = 0

  (x +5/4)^2 = 2/16

Subtracting 2/16, taking the square root, and subtracting 5/4 gives ...

  x +5/4 = ±√(-2/16)

  x = -5/4 ±i(√2)/4

The roots are -5/4 +i(√2)/4 and -5/4 -i(√2)/4.

7 0
3 years ago
Brenda has a balance of d dollars in her piggy bank. Explain what value(s) d may have if d = 28
DENIUS [597]
Not sure what you're asking!  
Brenda has a blance of 38 dollars in her piggy bank.  What exactly do you still need to learn / know?

She might have 3-$10 bills, 1-$5 bill and 3-$1 bills.  Other combinations are possible.
6 0
3 years ago
Solve −3x=2x2−4<br> using the Quadratic Formula.
otez555 [7]

Answer:

-3x= 2×2-4

Step-by-step explanation:

-3x= 4-4

-3x= 0

divide both sides by the co-efficient of x

-3x/-3= 0÷-3

  • x= 0/-3

x = 0

8 0
3 years ago
Please help me with math!
Lana71 [14]
B should be correct
Hope that helped
4 0
2 years ago
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