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3 years ago

Please helppp meee I am struggling

Mathematics

1 answer:

erma4kov [3.2K]3 years ago

8 0

Answer:

the number of cookies ordered

Step-by-step explanation:

When an equation is written in the form ...

(left variable) = (some expression involving one or more right variables)

we usually describe the "left variable" as the "dependent variable" and the "one or more right variables" as the "independent variable(s)".

Here, the equation is given as ...

C = 3s + 30

This tells you C is the dependent variable, and s is the independent variable. The description also says "C is the number of cookies." Since you know that the dependent variable is the number of cookies, you can answer the question ...

the dependent quantity is the number of cookies ordered. (matches the first choice)

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Leilani practiced piano for 3/5 of an hour. Sarah practiced piano for 7/8 of an hour.

ivolga24 [154]

Answer:

The number of hours did Sarah practice more than Leilani is $\dfrac{11}{40}$ hours .

Step-by-step explanation:

Given as :

The time for which Leilani practiced piano = $\dfrac{3}{5}$ hours

The time for which Sarah practiced piano = $\dfrac{7}{8}$ hours

Let the number of hours did Sarah practice more than Leilani = T hours

<u>Now, According to question</u>

The number of hours did Sarah practice more than Leilani = $\dfrac{7}{8}$ hours - $\dfrac{3}{5}$ hours

Or, T = $\dfrac{35-24}{40}$ hours

Or, T = $\dfrac{11}{40}$ hours

So,The number of hours did Sarah practice more than Leilani = T = $\dfrac{11}{40}$ hours

Hence, The number of hours did Sarah practice more than Leilani is $\dfrac{11}{40}$ hours . Answer

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3 years ago

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3 years ago

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dedylja [7]

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yan [13]

$\bf ~~~~~~~~~~~~\textit{middle point of 2 points }\\\\
\begin{array}{ccccccccc}
&&x_1&&y_1&&x_2&&y_2\\
% (a,b)
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% (c,d)
&D&(~ x &,& y~)
\end{array}\qquad
% coordinates of midpoint 
\left(\cfrac{ x_2 + x_1}{2}\quad ,\quad \cfrac{ y_2 + y_1}{2} \right)
\\\\\\
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\begin{cases}
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\boxed{x=7}\\
----------\\
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\boxed{y=0}
\end{cases}$

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3 years ago

Please helppp meee I am struggling​

Please helppp meee I am struggling