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3 years ago

5

Please help! SHOW YOUR WORK.

1 answer:

ahrayia [7]3 years ago

5 0

The correct answer would be 337 because you would have to work backwards
Hope that helps >.< ^_^ ^-^ :)

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5x + 4y = 11<br> 2x + 6y = -7

olga55 [171]

$\left\{\begin{array}{ccc}5x+4y=11&|\cdot2\\2x+6y=-7&|\cdot(-5)\end{array}\right\\\underline{+\left\{\begin{array}{ccc}10x+8y=22\\-10x-30y=35\end{array}\right}\ \ \ \ |add\ both\ sides\ of\ the\ equations\\.\ \ \ \ \ \ \ \ \ \ \ -22y=57\ \ \ \ |:(-22)\\.\ \ \ \ \ \ \ \ \ \ \ y=-\dfrac{57}{22}\\\\substitute\ the\ value\ of\ y\ to\ the\ first\ equation\\\\5x+4\left(-\dfrac{57}{22}\right)=11\\\\5x-2\cdot\dfrac{57}{11}=11\ \ \ \ |\cdot11\\\\55x-114=121\ \ \ \ |+114\\\\55x=135\ \ \ \ |:55$

$x=\dfrac{135}{55}\\\\x=\dfrac{27}{11}\\\\Answer:\ x=\dfrac{27}{11}\ and\ y=-\dfrac{57}{22}\to\left(\dfrac{27}{11},\ -\dfrac{57}{22}\right)$

8 0

2 years ago

A pizza has a diameter of 14 inches each piece has a central angle of 30° what is the distance around the outside of the crust t

jonny [76]

Answer:

The distance is 2.33 π

Step-by-step explanation:

First we have to calculate the perimeter of the circle with the following formula:

r = 14in

c = π * 2r

Now we replace the value of r

c = π * 2 * 14

c = π * 28

c = 28π

Now we have to multiply it by 30/360 which is the fraction that represents the arc over the entire circumference

28π * 30/360 = 2 1/3 π = 2.33 π

6 0

2 years ago

Find the value of 81^1/2

rjkz [21]

This is a fake answer

8 0

2 years ago

Read 2 more answers

Can someone help me evaluate this?

yawa3891 [41]

Answer:

$\frac{4}{9}$

Step-by-step explanation:

So first rewrite the inside of the parentheses as improper fractions:

$\frac{8}{9}$ ÷ $(\frac{25}{4}*\frac{16}{5}-18)$

Now simplify the inside:

$\frac{8}{9}$ ÷ 2

Which is:

$\frac{8}{18}=\frac{4}{9}$

4 0

3 years ago

A cleaning specalist buys a 130 ounce bottle of bleach and divides it into 10 sepreat bottles. what are the possible numbers of

Free_Kalibri [48]

The cleaning specialist has 10 separate bottles to fill, therefore, this is the maximum possible number of bottles she can fill bleach with.

8 0

3 years ago