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fenix001 [56]
4 years ago
13

How to solve (4s+5t)(4s-5t)

Mathematics
1 answer:
marin [14]4 years ago
7 0
(4s+5t)(4s-5t)

16s^2 - 20st + 20st - 25t^2

Combine like terms...

-20st + 20st = 0


The answer is:

16s^2 - 25t^2
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Angelo earns $2,080 each month. His total deductions are 30% of his pay. How much is deducted from his pay each month? 
Fofino [41]
C. $693.33. Just round. It helps. Round 2,080 to 2,100. Then whats 30% of 2,100? It's easy just think of 21 divided by 3, which equals 7. So, 700 and the closest answers to that is $693.33. That's just the easy way instead of doing the math out. And it is also common sense that B or D wouldn't be it. So your left with C or A. :)
7 0
4 years ago
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Divide 405 in to the ratio 3:12<br> give answer in the form ... and ...
OLEGan [10]

Answer:

81:324

Step-by-step explanation:

3+12=15

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3 years ago
I need help with question 9
makvit [3.9K]

Answer:

f(x)=0.17x+3.00

f(60)=0.17(60)+3.00

f(60)=10.20+3

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1 hour will cost $13.20

Step-by-step explanation:

I found the difference in minutes between the given values and the difference in cost between the given values. Between 8 minutes and 25 minutes is 17, and between 25 and 40 is 15 minutes. The difference of $7.25 and $4.36 is $2.89, and the difference between $7.25 and $9.80 is $2.55. I then divided2.89 by 17 and 2.55 by 15 and both resulted in $0.17/minute. I them multiplied 8 minutes by $0.17 toget $1.36. I subtracted that from the cost given for 8 minutes to get $3.00. The $3.00 is the initial charge, or b in slope-intercept form with m=0.17. Plug in 60 for x to find the cost of an hour.

7 0
4 years ago
The vertices of △DEF are D(1, 19), E(16, −1), and F(−8, −8). What type of triangle is △DEF?
JulijaS [17]

Answer: equilateral

Step-by-step explanation:

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3 years ago
Which statement correctly compares the four decimals?
nadya68 [22]
The answer would be D) because its true and the difference is -0.2.
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4 years ago
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