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3 years ago

PLEASEEE HELPPPPPPP!! please explain

Mathematics

1 answer:

Ymorist [56]3 years ago

7 0

It’s a proportional relationship because all of the points on the graph create a straight line

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Solve 2 1/2 divided by 5 1/3 = 8/x

ipn [44]

$2\frac { 1 }{ 2 } \quad divided\quad by\quad 5\frac { 1 }{ 3 } \\ \\ 2\frac { 1 }{ 2 } =2+\frac { 1 }{ 2 } =\frac { 5 }{ 2 } \\ \\ 5\frac { 1 }{ 3 } =5+\frac { 1 }{ 3 } =\frac { 15+1 }{ 3 } =\frac { 16 }{ 3 } \\ \\ \\ \frac { \frac { 5 }{ 2 } }{ \frac { 16 }{ 3 } }$

We're dividing fractions, so we will flip the one in the denominator upside down and we will multiply it with the numerator.

$\frac { \frac { 5 }{ 2 } }{ \frac { 16 }{ 3 } } \quad =\quad \frac { 5 }{ 2 } \cdot \frac { 3 }{ 16 } =\frac { 5\cdot 3 }{ 2\cdot 16 } =\frac { 15 }{ 32 }$

Let's equal this too 8/x

$\frac { 15 }{ 32 } =\frac { 8 }{ x }$

Cross multiply.

$8\cdot 32=15\cdot x\\ \\ 256=15x$

Divide both sides by 15.

$\frac { 256 }{ 15 } =\frac { 15x }{ 15 } \\ \\ \frac { 256 }{ 15 } =x$

4 0

3 years ago

Louisa wants to buy an online movie subscription that is on sale for

DedPeter [7]

Answer:

0.85c
one is the cost; the other is the discount

Step-by-step explanation:

a) As a fraction of the original price Louisa will pay ...

0.85c . . . . 85% of the subscription price

b) Louisa's expression (-0.15c) tells the amount of the discount, not the cost of the subscription. If Louisa were to write the cost of the subscription, her expression would be ...

c - 0.15c

c) The expression of (a) is the cost of the subscription; the expression Louisa wrote is the amount of cost reduction due to the discount.

4 0

3 years ago

Melissa graphed the equation y = x2 and Dave

DIA [1.3K]

Answer:

Dave's graph has been reflectes across the x-axis and has a horizontal stretch compared to Melissa's graph.

Step-by-step explanation:

5 0

3 years ago

Eva is working two summer jobs, making $16 per hour tutoring and $8 per hour clearing tables. Last week Eva worked 3 times as ma

Volgvan

Eva spent 2 hours tutoring and 6 hours clearing tables.

Let x represent the number of hours Eva worked tutoring and y represent the number of hours Eva worked clearing tables.

Eva worked 3 times as many hours clearing tables as she worked hours tutoring hours and earned a total of $80. Hence:

y = 3x

-3x + y = 0 (1)

16x + 8y = 80 (2)

Solving equations 1 and 2 simultaneously gives:

x = 2, y = 6

Eva spent 2 hours tutoring and 6 hours clearing tables.

Find out more on equations at: brainly.com/question/2972832

4 0

2 years ago

Does this equation represent a direct variation?<br> y=1/6x

DerKrebs [107]

This equation represents a direct variation, for the ratio between y and x is constant~

4 0

3 years ago