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Svetradugi [14.3K]
3 years ago
14

-6x – 2y-z=-17 5x + y - 6z = 19 -4x - 6y-6z =-20 solve for x, y, and z

Mathematics
1 answer:
Cloud [144]3 years ago
3 0

Answer:

z=17−6x−2y

y=19−5x+6z

x=5−3y/2−3z/2

Step-by-step explanation:

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A motorist took 1.2 hour to travel 96 km how far will he travel in 1 hour
miskamm [114]

Answer:

80km

Step-by-step explanation:

To solve this problem, we need to cross multiply. Lets input the values (1.2, 1.0, 96) as shown below:

\frac{1.2}{96} = \frac{1.0}{x}

Next we cross multiply. We multiply 1.2 and x, and we multiply 96 and 1.0.

1.2(x) = 1.2x

96 x 1.0 = 96

Now, lets put the values above back into the equation:

1.2x = 96

Lets solve this equation. First we divide 96 by 1.2.

1. x = \frac{96}{1.2}

2. x = 80

This means that our answer is 80km.

4 0
2 years ago
The monthly utility bills in a city at e normally distributed, with a mean $100 and a standard deviation of $13. find the probab
dmitriy555 [2]

Answer:

how's your day

Step-by-step explanation:

how's your day

5 0
2 years ago
Jasmine sells bracelets at a local jewelry store in South Dekalb Mall. She has 1,190 purple beads and 2,125 pink beads. Each bra
jeka57 [31]

Answer:

39

Step-by-step explanation:

1190 + 2125 = 3315 (number of beads)

3315/85 = 36 (number of bracelets jasmine can make)

8 0
2 years ago
A group of 25 students want to see a drake concert. Tickets for members of drakes fan club cost $20 and tickets for no members c
Gwar [14]

<span>If you would like to know how many of each type of ticket were sold, you can calculate this using the following two equations:

a ... the number of drakes fan club tickets
s ... the number of no members tickets

$550 = a * $20 + s * $25 ... 550 = 20 * a + 25 * s
a + s = 25 ... a = 25 - s
__________________
</span>550 = 20 * a + 25 * s

<span> 550 = 20 * (25 - s) + 25 * s</span>

550 = 20 * 25 - 20 * s + 25 * s

550 - 20 * 25 = 5 * s

550 - 500 = 5 * s    /5

s = 50 / 5 

s = 10 tickets

<span>a = 25 - s = 25 - 10 = 15 tickets</span>

<span>Result: There were 15 drakes fan club and 10 no members tickets sold.</span>

6 0
3 years ago
a box 750 grams. there are 25 such boxes. what is the total weight of the boxes in kilograms? give your answer to the nearest te
madam [21]
750 x 25 = 18750 grams
there are 1,000 grams in a kilogram, so divide 18750 by 1,000 to get 18.750 kilograms. Rounded to the nearest tenth is 18.8 kilograms
6 0
3 years ago
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