3 years ago

7,10) and (7,20). Slope or no slope

Mathematics

2 answers:

guapka [62]3 years ago

4 0

There is a slope, I think

hoa [83]3 years ago

3 0

Answer: No slope

Step-by-step explanation: The line is going straight down.

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Lalo has 1,500 minutes per month on his cell phone plan. How many more minutes can he use if he has already talked for 785 minut

Mandarinka [93]

He can use 715 minutes for the rest of the month.

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3 years ago

Read 2 more answers

When n = 3, which of the expressions below will be greater than 50? Select all that apply. A) (8n2÷9)⋅7 B) 2n2⋅3 –4n C) 4n2–6n+1

True [87]

Answer:

A

Step-by-step explanation:

a)

$(8(3)^{2} / 9) * 7$

8(9) / 9 = 8 x 7 = 56

$2(3)^{2} * 3 - 4(3)$

2(9) * 3 - 12

18 * 3 = 54 - 12 = 42

$4(3)^{2} - 6(3) + 12$

4(9) - 18 + 12

36 - 18 = 18 + 12 = 30

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3 years ago

226Ra has a half-life of 1599 years. How much is left after 1000 years if the initial amount was 10 g?

Ray Of Light [21]

$\bf \textit{Amount for Exponential Decay using Half-Life}\\\\
A=P\left( \frac{1}{2} \right)^{\frac{t}{h}}\qquad 
\begin{cases}
A=\textit{accumulated amount}\\
P=\textit{initial amount}\to &10\\
t=\textit{elapsed time}\to &1000\\
h=\textit{half-life}\to &1599
\end{cases}
\\\\\\
A=10\left( \frac{1}{2} \right)^{\frac{1000}{1599}}$

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3 years ago

The difference of two numbers is 9 and the sum of the numbers is 55. what are the numbers?

yKpoI14uk [10]

The two numbers I think is 3&6 because this is a trick question

3 0

4 years ago

4. Find the value of k, if x = 2, y=1 is a solution of the equation 2x + 3y=k.

icang [17]

Answer:

k=7

Step-by-step explanation:

first, plug in the given values

2x+3y=k --> 2(2)+3(1)=k

-->4+3=k

-->7=k

k=7

3 0

3 years ago