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AleksAgata [21]
3 years ago
9

Can't get my head around this at all any help would be greatly appreciated.​

Mathematics
2 answers:
Mashcka [7]3 years ago
6 0

Answer:

x=-6

Step-by-step explanation:

A=7x-6\\B=3x+2\\For A=3B\\7x-6=3(3x+2)\\7x-6=9x+6\\2x=-12\\x=-6\\

chubhunter [2.5K]3 years ago
3 0

Answer:

The input is -6, hope this helps :D

Step-by-step explanation:

Represent the machines as expressions:

outputA= 7x-6

outputB= 3x+2

Find the input when the outputA is 3*outputB:

outputA=3outputB

(7x-6)=3(3x+2)

7x-6=9x+6

2x=-12

x=-6

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Three times a number is 4 more than twice the number
Gelneren [198K]

Answer:

3n = 2n + 4

Step-by-step explanation:

That is that as an equation.

5 0
3 years ago
The price of an item has dropped to $39 today. Yesterday it was
Kobotan [32]

Answer:

40% decrease

Step-by-step explanation:

First, let's find the value decrease of the item from yesterday to today

$65 - $39 = $26

That means that $65 was 100% of the price and decreasing it by 26 gets us to 39

We need to find the percentage of 39 in 65

39/65 = 0.6 or 60%

If 39 is 60% of 65, then there was a 40% decrease form 100%

To check we can calculate the percentage of 26 in 65:

26/65 = 40%

There was a 40% decrease

-Chetan K

6 0
2 years ago
In parallelogram DEFG if m< GDE=50° find m
spin [16.1K]

Answer:

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Step-by-step explanation:

180-50=130°

4 0
2 years ago
Help me with this plsss 40 pointsss
lara [203]

Answer:

Step-by-step explanation:

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A submarine was situated 800 feet below sea level. If it ascends 250 feet, what is its new position?
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The sub is now 550 feet below sea level
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