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3 years ago

I need help please

Mathematics

1 answer:

antiseptic1488 [7]3 years ago

5 0

A if reflection by y axis

Mark brainliest please

Hope this helps

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A car travels 55.9 in an hour. If the car continues at the same speed, for 12 hours how many will it travel?

kirill [66]

Answer:

670.8

Step-by-step explanation:

55.9x12=670.8

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3 years ago

Pls help meeeeee it is for monday

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3 years ago

Z varies directly with x and inversely with y. When x=6 and y=2, .z=15. Write function that models variation. Then, find z when

tester [92]

$\bf \begin{array}{cccccclllll}
\textit{direct proportional variation}\\\\\textit{something}&&\textit{varies directly to}&&\textit{something else}\\ \quad \\
\textit{something}&=&{{ \textit{some value}}}&\cdot &\textit{something else}\\ \quad \\
y&=&{{ k}}&\cdot&x
\\
&& y={{ k }}x
\end{array}\\ \quad \\$

$\bf \textit{inverse proportional variation}\\\\
\begin{array}{llllll}
\textit{something}&&\textit{varies inversely to}&\textit{something else}\\ \quad \\
\textit{something}&=&\cfrac{{{\textit{some value}}}}{}&\cfrac{}{\textit{something else}}\\ \quad \\
y&=&\cfrac{{{\textit{k}}}}{}&\cfrac{}{x}
\\
&&y=\cfrac{{{ k}}}{x}
\end{array}$

$\bf \\\\
-------------------------------\\\\
\textit{z varies directly with x}\implies z=kx
\\\\
\textit{and inversely with y}\implies z=\cfrac{kx}{y}
\\\\\\
\textit{we also know that}\quad 
\begin{cases}
x=6\\
y=2\\
z=15
\end{cases}\implies 15=\cfrac{k\cdot 6}{2}\implies 30=6k$

$\bf \cfrac{30}{6}=k\implies \boxed{5=k}\impliedby \textit{constant of variation}
\\\\\\
thus\implies z=\cfrac{5x}{y}\\\\
-------------------------------\\\\
\textit{what's "z" when }
\begin{cases}
x=4\\
y=9
\end{cases}\implies z=\cfrac{5\cdot 4}{9}$

4 0

4 years ago

Which of the following uses the distributive property correctly?

valentina_108 [34]

The third one
3(x+5) = 3 * x + 3 * 5

7 0

4 years ago

Read 2 more answers

Need help need help need helpp!!!!!

Nikolay [14]

Answer:

A = 352 in²

Step-by-step explanation:

A=2(wl+hl+hw) Use this equation to find the surface area of the rectangular prism

A = 2(8x12 + 4x12 + 4x8) Multiply

A = 2(96 + 48 + 32) Add

A = 2(176) Multiply

A = 352 in²

If this answer is correct, please make me Brainliest!

4 0

3 years ago