3 years ago

There are 10 chocolates in a box.

Mathematics

1 answer:

marusya05 [52]3 years ago

6 0

What’s the question?

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I already solved this problem. I just need help with the HINT part.

frutty [35]

$x+y=25 \\ y=25-x~~Other~number~in~terms~of~x \\ \\ x^2+y^2=313 \\ x^2+2xy+y^2=313+2xy \\ (x+y)^2=313+2x(25-x) \\ \frac{25^2-313}{2} =25x-x^2 \\ x^2-25x+156 \\ \\ \Delta =(-25)^2-4\times 1\times 156 \\ \Delta =625-624 \\ \sqrt{\Delta}=1 \\ \\ x= \frac{25 \pm 1}{2} \\ x= \left \{ {{x_1=13} \atop {x_2=12}} \right.$

The number "x" is given by:
$y= \left \{ {{y_1=25-13 \rightarrow~y_1=12} \atop {y_1=25-12 \rightarrow ~y_1=13}} \right.$

Therefore, we have:

$\boxed {S=({12,13})} \rightarrow~The~curly~braces~does~not~want~appear~here.$

8 0

3 years ago

Kelly has a ribbon that is 60 inches long. She cuts off 40% of the ribbon for an art project.while working on it,she decides she

Ksivusya [100]

You take 60x.4 to see you are left with 36 inches 24x.75 to see what 75% of the 40% cut off is and you see she only needed 18 so you add back the Extra 6 cut off to the leftover 36 and you have 42 inches of ribbon left

6 0

3 years ago

Read 2 more answers

Find the area of the sector.

ozzi

Answer:

33.5

Step-by-step explanation:

60°÷360=0.16

60°/360° ×π×8²m

=33.5m²

8 0