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3 years ago

3y - 5z = -23

1 answer:

8 0

Starting off, we can multiply the third equation by 2 and add it to the third to get rid of both the x and y variables. Next, we get z=1. Plugging that into 3y-5z=-23, we get 3y-5=-23. Adding 5 to both sides, we get 3y=-18. After that, we can divide both sides by 3 to get y=-6. Plugging that into -2x-y-z=-3, we get -2x+6-1=-3=-2x+5. Subtracting 5x from both sides, we get -2x=-8. After that, we can divide both sides by -2 to get x=4.

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Helphelp need lots of help. do atleast one idc need hELP

Ainat [17]

Answer:

31. $70 / 34. 9.5, 9, or 10.

Step-by-step explanation:

31. ok here it looks like they split the cost between each other. if im correct, that means they split the thing in 5. which means Tai is paying for $\frac{2}{5}$ the of the camera. $\frac{1}{5}$ of the total cost of the camera is 35, so 35 x 2 = 70. Tai is paying $70.00

im not good with liters and things like that with ratio, sorry about that

34. ok so the long side of the rectangle is 18 cm, and this has a ratio of 5 : 3. so for every 5 cm the small side is 3 cm. so if something was 18 cm, it would make the shorter side 9.5 or if it only requires whole numbers then either 9 or 10.

i hope this helped, i did my best :)

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2 years ago

Use the given data to construct a frequency and relative frequency distribution.

MrRa [10]

Answer:

see the extended file below

Step-by-step explanation:

Download docx

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2 years ago

Select the statement that is true.<br><br> A 0.688 0.602<br> C 0.688 = 0.602<br> D 0.602 > 0.688

Trava [24]

Answer:

Step-by-step explanation:

the lower decimal number with the lowest digits after the decimal period means that u have a greater part of a whole

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3 years ago

Read 2 more answers

HELP ASAP!!!!!!!!!!!!!

Paladinen [302]

Answer:

<h3> A. $\bold{a_n=-3\cdot\left(\frac18\right)^{n-1}}$ </h3>

Step-by-step explanation:

$\begin{cases}a_1=-3\\a_n=a_{n-1}\cdot\dfrac18\end{cases}\\\\\\a_2=a_{2-1}\cdot\frac18=a_1\cdot\frac18\\\\r=\dfrac{a_2}{a_1}=\dfrac{a_1\cdot\frac18}{a_1}=\dfrac18\\\\\\a_n=a_1\cdot r^{n-1}\\\\a_n=-3\cdot\left(\frac18\right)^{n-1}$

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3 years ago

the radii of earth n pluto are 6,371 kilometers and 1,161 kilometers, respectively. approximately how many spheres the size of p

Elodia [21]

Since we are working with volumes, the number of spheres, N, required will be the (ratio of radii) ³ , i.e.

N= (6371/1161)^3 = 165.2

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3 years ago

Read 2 more answers