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Temka [501]
3 years ago
12

Please help with number 9

Mathematics
1 answer:
RUDIKE [14]3 years ago
6 0
This is the answer i got 147
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Danna's age is 6 years less than 8 times Tessa's age. If Tessa's age is x years, which expression best shows Danna's age?
Marat540 [252]
6 - 8x is the correct answer
3 0
3 years ago
Read 2 more answers
1/2 (x-4/5)=3/5
malfutka [58]
1/2x-2/5=3/5       (BTW I got 2/5 by reducing 4/10)
1/2x=7/5             (BTW I got 7/5 by moving 2/5 to the other side)
Then do 7/5 times 2 and you get 14/5

14/5

I do free online math homework help tutoring if interested!

6 0
3 years ago
Number 27.
atroni [7]
<h3>Answer:</h3>

none of these has "no solution"

<h3>Explanation:</h3>

A. The solution is (8/3, 3)

B. The second equation is -1/2 times the first, so these describe the same line. The system has an <em>infinite number of solutions</em>.

C. The solution is (-4, -2)

D. The solution is (4, -2)

E. The second equation is 2 times the first, so these describe the same line. The system has an <em>infinite number of solutions</em>.

_____

A system of equations will have "no solution" when it describes parallel lines—lines that do not intersect. In standard form, such equations are recognizable by their different constants. For example,

  • 3x -4y = -4
  • 3x -4y = 20 . . . . . . 20 is different from -4

have different constants, so the equations describe parallel lines.

We could multiply one of these by -2 and the system would still be "inconsistent"—having no solution.

  • 3x -4y = -4
  • -6x +8y = -40
5 0
3 years ago
Alex : Hey Bob, I think this coin is biased; I flipped it a few times and it always lends Tail. I think p, the probability of la
Pepsi [2]

Answer:

See below

Step-by-step explanation:

Alex finally understands how Bob was trying to trick him into winning the bet because of how he puts in the condition for probability being less than 10%. Whichever way the outcome of the coin toss turns out to be, it will be in Bob's favor and Alex will lose the bet. If the coin is flipped 3 times, the probability of having heads exactly twice is \frac{4}{9}

6 0
3 years ago
The electric bill in May was $248.00. In June the bill was $265.00. What is the percent of increase rounded to the nearest hundr
natali 33 [55]
1) May: 248$ and june 265$. The difference is 17$ and then you divide the difference with the old price: 17/ 248 = 6,85% 
2) Same method, the difference is 59$ so 27,44%' 
3) The difference is 9,5$ so you answer is 63,3% 
<span>4) The difference is 10$ divided by the original price: 10/24 = 41,66%</span>
4 0
3 years ago
Read 2 more answers
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