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3 years ago

Helppppppp Fassstttt

Mathematics

1 answer:

PilotLPTM [1.2K]3 years ago

4 0

The answers are:

1. 35 burgers
2. 196 cheeseburgers
3. 630 burgers
4. $3.20

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What is the product 6* [4, -2, 1, 7, 3, 0]

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Answer:

[24, -12, 6, 42, 18, 0]

Step-by-step explanation:

Multiply each term in this 1 by 6 row matrix by 6:

[24, -12, 6, 42, 18, 0]

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Find an upper bound for E(h) the error of the machine approximation of the two-point forward difference formula for the first de

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3 years ago

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3 years ago

Find the hcf of the following numbers <br>22,18

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3 years ago

Andrea, Justin, and Virginia went to an office supply store. Andrea bought 6 pencils, 7 markers, and 8 erasers. Her total was $1

olga2289 [7]

Answer:

$x=0.25\,,\,y=1.75\,,\,z=0.25$

Step-by-step explanation:

Let $x,y,z$ denotes number of pencils, markers, erasers respectively.

For Andrea:

$6x+7y+8z=15.75\,\,\,(i)$

For Justin:

$6x+8y+5z=16.75\,\,\,(ii)$

For Virginia:

$5x+5y+7z=11.75\,\,\,(iii)$

On subtracting equations (i) and (ii), we get

$(6x+7y+8z)-(6x+8y+5z)=15.75-16.75\\-y+3z=-1\\y-3z=1\\y=1+3z$

Put $y=1+3z$ in equation (i)

$6x+7(1+3z)+8z=15.75\\6x+29z=8.75\,\,\,(iv)$

Put $y=1+3z$ in equation (iii)

$5x+5(1+3z)+7z=11.75\\5x+22z=6.75\,\,\,(v)$

Multiply equation (iv) by 5 and equation (v) by 6 and then subtract both the equations.

$5(6x+29z)-6(5x+22z)=5(8.75)-6(6.75)\\13z=3.25\\z=\frac{3.25}{13}=0.25$

Put $z=0.25$ in equation $y=1+3z$

$y=1+3(0.25)=1.75$

Put $y=1.75\,,\,z=0.25$ in equation (i)

$6x+7(1.75)+8(0.25)=15.75\\6x+12.25+2=15.75\\6x=1.5\\x=0.25$

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4 years ago