2 years ago

Solve the following system of equations using the elimination method. 8x – 5y = 5 –8x – 6y = 6

Mathematics

1 answer:

Mariulka [41]2 years ago

6 0

Answer:

x = 0, y = -1

Step-by-step explanation:

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Find the volume of the cylinder

gizmo_the_mogwai [7]

Step-by-step explanation:

volume of cylinder formula pi*r²*h

radius of 9cm is 4.5 as 9/2

so 4.5²*15 is 303.75cm

303.75*pi is 303.75picm³

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2 years ago

A rectangular parking lot has an area of 2/3 of a square kilometer. The width is 1/2 of a kilometer. What is the length, in kilo

jeka57 [31]

Area = length x width
replace the known information into the equation:

area = 2/3
width = 1/2

so now the formula looks like:

2/3 = 1/2 x L

to solve for L we divide both sides by 1/2

L = 2/3 / 1/2 which = 2/3 * 2/1 = 4/3 = 1 and 1/3 km

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2 years ago

What is the exact volume of this cylinder? 4in 8in

MAVERICK [17]

The volume of the cylinder is; 128π in3

Base area(πr^2)*height

Π = 3.14

Therefore; 3.14 * 4^2 * 8

3.14 * 128

= 401.92 in3

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3 years ago

What is the probability of getting a tails, vowel and an even number?

Zinaida [17]

Answer:

$\frac{1}{15}$

This is assuming the die is from 1 - 5

Step-by-step explanation:

Tails: 0.5

Vowel: $\frac{1}{3}$

Even number: $\frac{2}{5}$

$\frac{1}{2}* \frac{1}{3} *\frac{2}{5} =\frac{2}{30}=\frac{1}{15}$

8 0

2 years ago

Read 2 more answers

2x-y=5<br>2x-2y=4<br><img src="https://tex.z-dn.net/?f=2%20%5Ctimes%20%20-%20y%20%3D%205%20%5C%5C%202%20%5Ctimes%20%20-%202y%20%

d1i1m1o1n [39]

$\left\{\begin{array}{ccc}2x-y=5\\2x-2y=4&|\cdot(-1)\end{array}\right\\\underline{-\left\{\begin{array}{ccc}2x-y=5\\-2x+2y=-4\end{array}\right}\ \ \ \ |add\ both\ sides\\.\ \ \ \ \ \ \ \ y=1\\\\substitute\ the\ value\ of\ y\ to\ first\ equation\\\\2x-1=5\ \ \ |+1\\2x=6\ \ \ |:2\\x=3\\\\\left\{\begin{array}{ccc}x=3\\y=1\end{array}\right$

7 0

2 years ago