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3 years ago

5

Which is a reasonable estimate of the amount of water in a small, inflatable pool used by children? A) 5 pints B) 5 quarts C) 50

cups D) 50 gallons

2 answers:

zzz [600]3 years ago

6 0

Answer:

50 gallons

Step-by-step explanation: i had it on my test

Ede4ka [16]3 years ago

3 0

I would say the amount used would be at least 50 gallons because it makes most sense. Hope I helped :))

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If A=3x^2+5x-6 and B= -2x^2-6x=7, then A-B equals

Kryger [21]

Yup ur right les goo

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3 years ago

1.Arsenic-74 is used to locate brain tumors. It has a half-life of 17.5 days. 90 mg wereused in a procedure. Write an equation t

Sophie [7]

$1)\text{ }N_t\text{ = 90\lparen}\frac{1}{2})^{\frac{t}{17.5}}$

2) 5.625 mg will be left

Explanation:

1) Half-life = 17.5 days

initial amount of Arsenic-74 = 90 mg

To get the equation, we will use the equation of half-life:

$\begin{gathered} N_t\text{ = N}_0(\frac{1}{2})^{\frac{t}{t_{\frac{1}{2}}}} \\ where\text{ N}_t\text{ = amount remaining} \\ N_0\text{ = initial amount} \\ t_{\frac{1}{2}\text{ }}\text{ = half-life} \end{gathered}$ $N_t\text{ = 90\lparen}\frac{1}{2})^{\frac{t}{17.5}}$

2) we need to find the remaining amount of Arsenic-74 after 70 days

t = 70

$\begin{gathered} N_t=\text{ 90\lparen}\frac{1}{2})^{\frac{70}{17.5}} \\ N_t\text{ = 5.625 mg} \end{gathered}$

So after 70 days, 5.625 mg will be left

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1 year ago

Are the ratios 1:2 and 10:20 equivalent <br><br><br>YES OR NO

nignag [31]

Answer:

yes

Step-by-step explanation:

10:20=

5 times 2= 10

5 times 4= 20

2:4=

1 times 2=2

2 times 2= 4

1:2

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Step-by-step explanation:

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Answer:

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Step-by-step explanation:

So x represents like say if he mowed 3 yards.

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