3 years ago

The equation y=5.5x represents a proportional relationship. What is the constant of the proportionality?

Mathematics

2 answers:

Step2247 [10]3 years ago

6 0

I’m pretty sure it’s 5.5

svetoff [14.1K]3 years ago

5 0

Answer:

the answer is 5.5

Step-by-step explanation:

the answer ia 5.5

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Find the value of x and y for the equation x+y5 7x+9y=6

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Answer:

$x = \frac{39}{2}$

$y = -\frac{29}{2}$

Step-by-step explanation:

Given

$x + y= 5$ --- (1)

$7x + 9y = 6$ ---- (2)

Required

Find x and y

Make x the subject in (1)

$x + y= 5$

$x = 5 - y$

Substitute 5- y for x in (2)

$7x + 9y = 6$

$7(5 - y) + 9y = 6$

Open bracket

$35 -7 y + 9y = 6$

Collect like terms

$-7y + 9y = 6 - 35$

$2y = -29$

Divide both sides by 2

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Substitute this for y in $x = 5 - y$

$x = 5 - (-\frac{29}{2})$

$x = 5 +\frac{29}{2}$

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$x =\frac{10+29}{2}$

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3 years ago

David earns $8 per hour. He works 40 hours each week. Michael earns $9 per hour. He works 28 hours each week. After 6 weeks what

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Answer:

Step-by-step explanation:

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9 x 28 = 252

320 - 252 = 68

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3 years ago

How many two digit numbers are divisible by either 3 or 5?

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now find which of those are divisible by 3 (divide the numbers by three and if its a whole number that works for example 30 divided by 3 is 10 so thats one)

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3 years ago

Read 2 more answers