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torisob [31]
2 years ago
11

A water truck is filling a swimming pool. The equation that represents this relationship is y = 19.75x where y is the number of

gallons of water in the pool and x is the number of minutes the truck has been filling the pool. Choose True or False for each statement.
A. The unit rate for this relationship is 1 gallon per 19.75 minutes.
B. This is a proportional relationship because the graph of the equation is a straight line through the origin.
C. The water in the swimming pool increases by about 100 gallons every 5 minutes.
D. A table of related x- and y- values for this relationship would show equivalent ratios.
E. The point (8,150) could be a point on this graph.
Mathematics
1 answer:
Degger [83]2 years ago
5 0

Answer:

Step-by-step explanation:

1. true

2. true

3. true

4. true

5. true

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exis [7]

Answer:

pretty sure its 0

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If f(x)=x²-x what is f(-5)?​
joja [24]

Answer:

f(-5)=30

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7 0
3 years ago
The quantities x and y are proportional.
uranmaximum [27]

Answer: r = 1/9

<u>Step-by-step explanation:</u>

y = rx  -->  r=\dfrac{y}{x}

1)\ y=1\dfrac{2}{9}\rightarrow\dfrac{11}{9}\\\\.\quad x=11\\\\r=\dfrac{11}{9}\div11\\\\\\r=\dfrac{11}{9}\times \dfrac{1}{11}\quad =\large\boxed{r=\dfrac{1}{9}}

2)\ y=2\dfrac{1}{3}\rightarrow\dfrac{7}{3}\\\\.\quad x=21\\\\r=\dfrac{7}{3}\div21\\\\\\r=\dfrac{7}{3}\times \dfrac{1}{21}\quad =\large\boxed{r=\dfrac{1}{9}}

3)\ y=5\\\\.\quad x=45\\\\r=5\div45\\\\\\r=\dfrac{5}{45}\quad =\large\boxed{r=\dfrac{1}{9}}

4 0
2 years ago
mr stone paid $1750 for a new computer at the apple store, if the sales tax is 7.5% what is the final cost. I have 1881.25 must
valina [46]

Answer:

$1881.25

Step-by-step explanation:

Final cost of the computer

= 1750 + 7.5\% \: of \: 1750 \\  \\  = 1750 + 0.075 \times 1750 \\  \\  = 1750 + 131.25 \\  \\  = \$ 1,881.25

6 0
2 years ago
I can’t figure this stuff out
Vladimir79 [104]

Answer:

3\sqrt{85} = EC

Step-by-step explanation:

21² + 18² = EC²

441 + 324 = EC²

765 = EC²

\sqrt{765} = EC

Simplified: 3\sqrt{85} = EC

Hope this helps!

6 0
2 years ago
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