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user100 [1]
4 years ago
14

A pump removes 1000 gal of water from a pool at a constant rate of 50 gal/min. which equation models the amount of water y in th

e pool after t minutes?
a) y=50t - 1000
b) y= 50t + 1000
c) y= -50t - 1000
d) y= -50t + 1000
Mathematics
1 answer:
Oksanka [162]4 years ago
3 0
<span>d) y= -50t + 1000 
You can re-arrange as 
The amount of water left in the pool Y = 1000 gal at the beginning minus 50 gal x number of minutes passed.  1000 - 50t (or -50t+1000)

</span>
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Explain how you can tell, without computing, whether the quotient one -half divided into 6 is greater than one or less than one
Helga [31]
If you take 1/2 of a pizza and divide it up between 6 people, will you have more than 1 whole Pizza or less than 1 whole pizza?

If you divide up a fraction into smaller pieces it will always be less than 1 because it started out less than 1 and you're making it even smaller.
8 0
3 years ago
19-2(3x-1) divided by 5 = x +2
VladimirAG [237]

Equation: 19-2(3x-1)/5 = x + 2

Solution:

1. Find x

(5) - 2 = (x + 2) - 2

x = 3

2. Plug in X and solve

19-2(3(3)-1)/3

19-2(9-1)/3

19-2(8)/3

19-16/3

<u>3/3 = 1</u>

4 0
3 years ago
The surface area of a rectangular prism is 198 cm2. Two of the dimensions are 3 cm and 9 cm. Find the measure of the other dimen
Alecsey [184]

In this question, it is given that two of the dimensions are 3 cm and 9 cm . Let the other dimension be x cm .

And the surface area of the rectangular prism is given. Now we use the formula of surface area of prism, which is

A = 2(length* width + width * height + length * height )

198 = 2(3*9 + 3*x + 9*x)

99 = 27 + 12x

Subtracting 27 to both sides,

72 = 12x

Dividing both sides by 12

x = 6

So the length of the remaining dimension is 6 cm .

7 0
3 years ago
Math help please show work thanks
erik [133]

Answer:

600.4 cm^2

Step-by-step explanation:

first we should find the base of samller triangle

hypotenuse = 35 cm

one side = 30 cm  whereas other has be be find

using pythagoras theorem

a^2 + b^2 = c^2

30^2 + b^2 = 35^2

900 + b^2 = 1225

b^2 = 1225 - 900

b^2 = 325

b = \sqrt{325}

b = 5\sqrt{13}

area of big triangle

base = 22 + 5\sqrt{13}

area of a triangle = base * height / 2

= 30 (22 + 5\sqrt{13} ) /2

=30*22 + 30*5\sqrt{13} / 2

=660 + 540.83 / 2

=1200.83 / 2

=600.415

=600.4 cm^2

6 0
3 years ago
Read 2 more answers
PLEASE HELP...
joja [24]

Answer:

$10,240

Step-by-step explanation:

y = 20,000 (.80)^t

y = 20,000 (0.80)^3

0.8^3 = 0.512

0.512 x 20,000 = 10240

Your answer would be A. $10,240.

7 0
3 years ago
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