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Ivahew [28]
3 years ago
5

Is y = 2/3x - 7 proportional or not?

Mathematics
1 answer:
Schach [20]3 years ago
8 0

Answer: No, it is not a direct proportion equation

Explanation:

Direct proportions are always in the form y = kx where k is any nonzero real number. So for example, we could have the equation y = 9x. The y intercept of any direct proportion is always zero. Visually, such equations will go through the origin.

Something like y = \frac{2}{3}x-7 has a y intercept of -7 and it doesn't fit the form y = kx, so it's <u>not</u> a direct proportion equation.

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Apply the distributive property to produce an equivalent expression to 10(9+8t
Ket [755]
10(9+8t)
10x9+10x8t
90+8t
hope that helps
5 0
3 years ago
Eric has $25 to purchase magazines and to pay for his lunch. Each
faust18 [17]

Answer:

B

Step-by-step explanation:

The maximum amount Eric can spend on magazines is $25 less the cost of lunch, $15.

The appropriate inequality sign would be less than since he cannot spend more than $25.

Also, the amount he can spend on magazines would be what is left after paying for lunch.

So the correct inequality is 4m - 15 < 25

8 0
3 years ago
Chris needs to make a 500 L of a 35% acidic solution. He has only two of the acidic solutions available, a 25% solution and a 50
DaniilM [7]
Yes, very fun, not


ok
one way is table or

solutions amount x and y
x+y=500
x=25%
y=50%
0.25x+0.5y=0.35(500)

we have
x+y=500
0.25x+0.5y=0.35(500)
0.25x+0.5y=175
solve

multiply second equation by 100
25x+50y=17500
divide everybody by 25
x+2y=700

now we have
x+y=500
x+2y=700

multiply first equation by -1 and add to second equaiton

-x-y=-500
<u>x+2y=700 +</u>
0x+1y=200

y=200
sub
x+y=500
x+200=500
x=300


300L of the 25% and 200L of the 50%
4 0
3 years ago
The formula for the area of a triangle is 1/2b*h. What is the area of a triangle when b=6 and h=8
Marta_Voda [28]

Answer:

24

Step-by-step explanation:

1/2x6x8=24

3 0
3 years ago
5=1.62x+0.117. what does x equal?
Setler [38]
<span>3.01419753086 or approximately 3

</span>
8 0
3 years ago
Read 2 more answers
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