Please help . I’ll mark you as brainliest if correct

Mathematics

1 answer:

Oxana [17]3 years ago

8 0

Answer:

30m

Step-by-step explanation:

51-21=30 that is the length of the long piece

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Solve and explain. Sue orders pictures from her photographer. Each picture costs $8. A one-time shipping fee of $7 is added to t

Whitepunk [10]

Answer:

3 pictures

Step-by-step explanation:

Please see the attached pictures for the full solution.

☆ Since the shipping fee is a one-time fee, for an order, Sue only pays $7 once and the rest of the cost would be due to the number of pictures she ordered.

8 0

2 years ago

Kyle has 130 pins in his collection he has 76 of the pens displayed on his wall the rest are in a drawer how many of Kyle’s pins

Alex

130 - 76 = 54 so they're 54 pins in Kyle's drawer.

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3 years ago

Hi,<br> Can someone help me with this problem?<br> Thanks in advance!

Gnesinka [82]

$\bf QP^{\frac{1}{2}}=38\implies \stackrel{\textit{product rule}}{\cfrac{dQ}{dP}P^{\frac{1}{2}}+Q\cdot \cfrac{1}{2}P^{-\frac{1}{2}}}=0\implies \cfrac{dQ}{dP}P^{\frac{1}{2}}=-\cfrac{Q}{2P^{\frac{1}{2}}}
\\\\\\
\cfrac{dQ}{dP}=-\cfrac{Q}{2P^{\frac{1}{2}}P^{\frac{1}{2}}}\implies \cfrac{dQ}{dP}=-\cfrac{Q}{2P}\impliedby \textit{now, let's zero it out}
\\\\\\
\stackrel{\textit{horizontal tangent line}}{0=-\cfrac{Q}{2P}}\implies 0=-Q\implies 0=Q$

now, how to check it? well, graphing the equation, to check where it may have an extrema, namely a horizontal tangent line, check the picture below, low and behold, Q = 0 when that happens.