4 years ago

PLZZZ HELPPPPP

Mathematics

1 answer:

olga nikolaevna [1]4 years ago

8 0

Step-by-step explanation:

let 3 sides be a b c

a-b<c<a+b (always)

we have 7+5 =12 (contradict the above property)

-> 12,7,5 will not make a triangle

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Debora [2.8K]

Answer:

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Step-by-step explanation:

$(5/2)^{2}$ = 25/4

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3 years ago

Subtract 8 from 5 times a number. The result is 4 less than 3 times the number.

vovikov84 [41]

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Step-by-step explanation:

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3 years ago

You need a 75% alcohol solution. On hand, you have a 1125 mL of a 90% alcohol mixture. How much pure water will you need to add

Alex777 [14]

$\bf \begin{array}{lccclll}
&amount&concentration&
\begin{array}{llll}
concentrated\\
amount
\end{array}\\
&-----&-------&-------\\
\textit{90\% sol'n}&1125&0.9&(1125)0.9\\
\textit{water}&x&0&0x\\
-----&-----&-------&-------\\
mixture&y&0.75&0.75y
\end{array}$

so.. whatever "x" is, we know 1125 + x = y
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3 years ago

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EastWind [94]

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Step-by-step explanation:

take the bigger number (-17) change it to positive, and then subtract that by the other number(0.75) then once you get your result. return the negative for -16.25

If you liked this answer, give me brainliest please.

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3 years ago