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Radda [10]
3 years ago
15

What three prima donna numbers can be added to equal 40?

Mathematics
1 answer:
Vlada [557]3 years ago
5 0
I think the answer is 10, 20, and 4
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What is the value of b2 - 4ac for the following equation? 5x2 + 7x = 6
shtirl [24]
B²-4ac? 

<span>5x²+7x-6 = 0 </span>
<span>the form is ax²+bx+c = 0 </span>

<span>a=5, b=7, c=-6 </span>


<span>The discriminant D = b²-4ac </span>
<span>= 7² - 4(5)(-6) = 49 + 120 </span>
<span>= 169 </span>
5 0
3 years ago
Read 2 more answers
Part B: Collins also does part-time yard work. The ratio of the number of hours Collins works to the money he earns in dollars i
Aleks04 [339]

Answer:

look below :)

Step-by-step explanation:

6 0
2 years ago
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Is this right??? Idk what to do on this question and neither does my mom!
Fed [463]
They are telling you to make inches into feet
I foot equals 12 inches
84 divided by 12 equals 7
Answer is seven
4 0
3 years ago
Read 2 more answers
Please help! I don't understand this.​
nydimaria [60]

Answer:

1) 7

2) 49

3) 56

4) 9

5) 91

Step-by-step explanation:

For the day blanks, you just multiply the number of weeks by 7.

For the week blank, you divide 63 by 7

3 0
3 years ago
Can some one help me with the rest of this chapter! I’ll pay them as-well!
forsale [732]

Answers:

  • a = 475
  • r = -0.5
  • f(3) = 59.4

=======================================================

Explanation:

Any exponential function is of the form y = a*b^x

Comparing that to y = 475*(0.5)^x, we see that a = 475 and b = 0.5

Set b equal to 1+r and solve for r

1+r = 0.5

r = 0.5-1

r = -0.5

The negative r value tells us that the growth rate is -50%, in other words, we have a 50% decay rate. The amount drops by 50% each time x goes up by 1. This is the same as saying the amount cuts in half each time x goes up by 1.

-----------------------

Lastly, plug in x = 3 to find f(3)

f(x) = 475(0.5)^x

f(3) = 475(0.5)^3

f(3) = 59.375

f(3) = 59.4

5 0
3 years ago
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