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Kamila [148]
2 years ago
6

Expand and simplify 3(5x+1)+5(5x-4)​

Mathematics
1 answer:
SVEN [57.7K]2 years ago
8 0

Answer:

40x-17

Step-by-step explanation:

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If Matrix A is 3 x 4, and Matrix B is 4 x 2, what is the size of matrix BA? If BA is undefined, please state so.
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Joe Mok

Step-by-step explanation:

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4 0
3 years ago
Find the quotient 9 3/5 divided 8/15
Whitepunk [10]
The answer is 81/8
Alternative Forms:
10 1/8 or 10.125
4 0
3 years ago
Solve each system by substitution <br> 5x + 7y = -23<br> Y = -2x - 11
Alenkasestr [34]

Answer:

x = −6

Explanation:

5x + 7y = -23

Y = -2x - 11

Substitute -2x - 11 for y in 5x + 7y = -23

5x + 7(−2x − 11) = −23

Simplify both sides of the equation

5x + 7(−2x − 11) = −23

5x + (7)(−2x ) + (7)(−11) = −23 (Distribute)

5x + −14x + −77 = −23

(5x + −14x) + (−77) = −23 (Combine Like Terms)

−9x + −77 = −23

−9x − 77 = −23

Add 77 to both sides

−9x − 77 + 77 = −23 + 77

−9x = 54

Divide both sides by -9

−9x / -9 = 54 / -9

x = -6

6 0
3 years ago
Drag an answer to each box to complete this paragraph proof.
Alexxx [7]

1st box:

m<A + m<B + m<C = 180


2nd box:

substitution property


3rd box:

division property of equality


Hope it helps.

8 0
3 years ago
Read 2 more answers
Cost per mile is calculated by dividing total cost by total miles. Using the notation P = cost per mile, C = total cost, and M =
lutik1710 [3]
Cost per mile P- total cost (C) divided by total miles (M). 
P= C/M
6 0
3 years ago
Read 2 more answers
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