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adoni [48]
3 years ago
13

Distribute -3(9x^2+10x)

Mathematics
1 answer:
Blizzard [7]3 years ago
6 0

Answer:

-27x^2-30x hoped that helped

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A copy machine repairman makes $12.50 per hour plus $4 for every service call he performs. Last week he worked 34 hours and made
Slav-nsk [51]
Hours = 34 Income per hour = 12.5$ Service calls = 6 Income per call = 4 Therefore, total income = (time of working * income per hour) + (service calls * income per call) = (34*12.5) + (6*4) = 425+24 = 449
5 0
3 years ago
Find the exponential function that satisfies the given conditions: Initial value = 64, decreasing at a rate of 0.5% per week
mrs_skeptik [129]

Answer:

Step-by-step explanation:

An exponential function is of the form

y=ab^x

where a is the initial value and b is the growth/decay rate.  Our initial value is 64.  That's easy to plug in.  It goes in for a.  So the first choice is out.  Considering b now...

If the rate is decreasing at .5% per week, this means it still retains a rate of

100% - .5% = 99.5%

which is .995 in decimal form.

b is a rate of decay when it is greater than 0 but less than 1; b is a growth rate when it is greater than 1.   .995 is less than 1 so it is a rate of decay.  The exponential function is, in terms of t,

f(t) = 64(.995)^t

4 0
3 years ago
How to determine if an expression is rational or irrational?
Neporo4naja [7]
If it is rational, it has a terminating decimal or a repeated decimal number (ex. 56, or 1.25, or 3.666...)

If it is irrational, it is an ongoing number with no pattern (ex. 3.14159265... Which is pi)
4 0
3 years ago
Find the slope of the parametric curve xequalsnegative 4 t cubed plus 8​, yequals5 t squared​, for negative infinity less than t
Licemer1 [7]
Take a picture so I can do the problem
6 0
3 years ago
Solve the system of linear equations. Check your solution. y=2x-2 <br> y=2x+9
natulia [17]
2X-2=2X+9
Add 2

2X=2X+11
Subract 2X
0= 11

This has no solution to this problem
8 0
3 years ago
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