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lisabon 2012 [21]
3 years ago
14

The sum of ten and the product of 4 and x

Mathematics
1 answer:
loris [4]3 years ago
8 0
40 is the answer sorry if I’m wrong
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Sue walked from her home to her school at a constant rate of 2 miles per hour, picked up her bicycle and rode back at a constant
Nady [450]

Answer:

15 miles

Step-by-step explanation:

the 2 mph is a red herring. If there is a rate of 10 mph, and the trip took 1.5 hours, the 1 hour=10 miles, and the .5=5 miles, add em up and its 15 miles

8 0
3 years ago
Read 2 more answers
Find f(-2) f(x)=9x^2-5x+2
borishaifa [10]

Find f(-2) f(x)=9x^2-5x+2


f(-2) means replace x in the equation with -2:


f(-2)=9(-2)^2-5(-2)+2

= 9(4) +10 + 2

= 36 +10 + 2

= 48


f(-2) = 48



4 0
3 years ago
I need help bc I don’t have a calculator
kari74 [83]

Answer:

B is correct

Step-by-step explanation:

I think you don't need a calculator here. :) Try to figure out next time!

7 0
3 years ago
Item 8
ludmilkaskok [199]
So, I didn't quite understand your question clearly, but I'll try my best to answer it.

So, the first question is quite simple: Did the runner have a % decrease in his time or an increase.
Well, 7:45 is minor than 5:51. So, his time decreased.

2nd question:
The percent of change. Well, first things first 7:45 has 2 different units, wich are minutes and seconds, I suppose. Same goes for 5:51.
So let's put everything in seconds. multiply both the 7 and 5 for 60(for every minute has 60 seconds.)

That means:
7*60= 420+45 = 465.
5*60=300+51=351.

Now, let's do the math itself:
465 -> 100%
351 -> x%
 Is equal to about  75,5%
How much did it decrease then?
(75,5-100)%= 24,5%, approximately

8 0
3 years ago
Jean spent $16 on new T-shirts. If each shirt cost the same whole-dollar amount, how many could she have bought?
Kaylis [27]
Well $16 times 16 would be $256.
If each shirt costs $1 then she could buy 16 shirts.
4 0
3 years ago
Read 2 more answers
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