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olchik [2.2K]
3 years ago
5

!!!!!!!!!!!!!!!!!!!!!!!!!PLEASE HELP!!!!!!!!!!!!!!!!!!!!

Mathematics
1 answer:
denis-greek [22]3 years ago
5 0

Answer:

-t2+10t-h+8  = 0

Step-by-step explanation:

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Trina has two brothers. one brother is 7 years older than trina and the other brother is 7 years younger than trina. the product
AlladinOne [14]
(a) 95 = (x+7)*(x-7)

(b) 95 = (x+7)*(x-7) 
Expand the brackets:
95 = x² -7x + 7x -49 = x² - 49
Subtract x² from both sides:
95-x² = -49
Subtract 95 from both sides:
-x²=-49-95 
-x²= -144
Divide both sides by -1 to get rid of the negative numbers:
-x²/-1=-144/-1
x²=144
Take the square root of 144:
x = ± squareroot of 144
x = 12 or -12
x = 12 because you cannot have a negative age so Trina is 12 years old.
     
7 0
3 years ago
how many 5-digit even numbers can be formed with the digits 1,2,3,4,5, and 6 if repetition is allowed?​
Setler79 [48]

Given:

The given digits are 1,2,3,4,5, and 6.

To find:

The number of 5-digit even numbers that can be formed by using the given digits (if repetition is allowed).

Solution:

To form an even number, we need multiples of 2 at ones place.

In the given digits 2,4,6 are even number. So, the possible ways for the ones place is 3.

We have six given digits and repetition is allowed. So, the number of possible ways for each of the remaining four places is 6.

Total number of ways to form a 5 digit even number is:

Total=6\times 6\times 6\times 6\times 3

Total=3888

Therefore, total 3888 five-digit even numbers can be formed by using the given digits if repetition is allowed.

6 0
2 years ago
The volume of a brick 3 inches wide, 8 inches long, and 4 inches tall is:
Vladimir [108]

96 square inches

Hope it helps

6 0
3 years ago
Look at the image below.<br>I give Brainliest<br>Answer the questions.
olchik [2.2K]

Answer:you do every number plus 24 and that’s how you get it

Step-by-step explanation:

7 0
2 years ago
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3in x 8in x 5in = ?<br><br> using cubic squares!!
KonstantinChe [14]

Answer:

120

Step-by-step explanation:

4 0
3 years ago
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