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3 years ago

Determine whether each equation represents a proportional relationship.

Mathematics

1 answer:

Hitman42 [59]3 years ago

8 0

Answer:

y=2.5x - Proportional

y= x - 4 - Not Proportional

Step-by-step explanation:

A linear function that is proportional is in the form y =kx (k is the constant of variation) and passes the origin.

The first equation given is in this form (2.5 is the constant) and it passes through the origin. It is proportional.

However, the second one is not proportional is it does not pass the orgin and it's not in y=kx form.

Hope this helps.

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You plant a rectangular rose garden along the side of your garage. You enclose 3 sides of the garden with 40 feet of fencing. Th

solmaris [256]

Let's assume

length of rectangle =L

width of rectangle =W

You enclose 3 sides of the garden with 40 feet of fencing

so, we get

$L+2W=40$

now, we can solve for L

$L=40-2W$

we know that

area of rectangle is

$A=L*W$

$100=L*W$

now, we can plug

$100=(40-2W)*W$

now, we can solve for W

$-2W^2+40W-100=0$

we can use quadratic formula

$W=\frac{-40+\sqrt{40^2-4\left(-2\right)\left(-100\right)}}{2\left(-2\right)}$

$W=\frac{-40-\sqrt{40^2-4\left(-2\right)\left(-100\right)}}{2\left(-2\right)}$

we can take anyone value ..because both are giving positive value

first dimensions:

$W=2.929$

now, we can find L

$L=40-2*2.929$

$L=34.142$

so, length is 34.142feet

width is 2.929 feet

Second dimensions:

$W=17.071$

now, we can find L

$L=40-2*17.071$

$L=5.858$

so, length is 5.858feet

width is 17.071 feet

6 0

4 years ago

miguel walked 3/4 miles to the library and then 3/8 miles to the post office. Which statement is true?

Paraphin [41]

Answer:

Post office is true because 3/4 miles is 1320 yards and 3/8 is only 660 yards. So basically it will take A LONG TIME for him to get there at the library. But you know I am not always accurate /:

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3 years ago

8x11=(8x10)+(1x10) how can I make it true?

icang [17]

You could make it true by making it (8x10) plus (8x1)

Explanation: 8x11=88 and 8x10=80 and 8x1=8 and 80+8=88

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4 years ago

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Kamila [148]

Answer:

84 meters

Step-by-step explanation:

5 x 6 = 30 hypotenuse side not shown

3 x 4 ÷ 2 x 2 = 12 red (both ends)

3 x 6 = 18 green side

6 x 4 = 24 blue side

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4 years ago

What is the value of b in this equation?<br><br> b – 8.4 = -2.9

belka [17]

5.7 is your answer

Hope this helps.

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4 years ago

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