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Scrat [10]
2 years ago
10

Helppppp !!!!!! 5 ( 3a - 9 ) = ? ​

Mathematics
2 answers:
kherson [118]2 years ago
4 0
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5 ( 3a - 9 )

( 5 × 3a ) - ( 5 × 9 )

15a - 45

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\:

scZoUnD [109]2 years ago
3 0

Answer:

5(3a - 9) \\  = 5 \times 3a - 5 \times 9 \\  = 15a - 45 \\ thank \: you

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Please help no links
Nina [5.8K]

Answer:

x=5 y=-6

Step-by-step explanation:

3x+y=9 ------eqn1

y=4-2x -------eqn2

using substitution

put y=4-2x into eqn1

3x+4-2x=9

x=5

put x=5 into eqn2

y=4-2(5)

y=4-10

y=-6

8 0
3 years ago
PLEASE HELP 
Molodets [167]
B would be the correct answer
3 0
3 years ago
Find the first of three consecutive even integers if the sum of the first and second is 15 less than 3 times the third.
lilavasa [31]

Answer:

<em>First even integer: 6</em>

Step-by-step explanation:

<u>Inequalities</u>

Assume x is the first even integer. The next integer is x+2, and the last integer ix x+4.

The condition states that the sum of the first and the second number is 15 less than three times the third. This takes us to the inequality:

x+x+2

Operating:

2x+2

Subtracting 2 and 2x:

0

Simplifying:

0

Solving:

x>5

There are infinitely many solutions. For example, for x=6 (first even number into the solution interval):

First integer: 6

Second integer: 8

Third integer: 10

There are other solutions, like 20,22,24 but the first set is 6,8,10.

4 0
3 years ago
I need help on this question
solong [7]

Answer:

Diego: y = 11 + 5 x

Emilia: y = 60 - 2 x

Step-by-step explanation:

y for saving and x for weeks

Diego: y = 11 + 5 x

Emilia: y = 60 - 2 x

7 0
3 years ago
Approximately 10% of all people are left-handed. Consider a grouping of ten people.
Stella [2.4K]

If 10% of people are left-handed, and you have 10 people in a group, only 1 of them is going to be left-handed.

5 0
3 years ago
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