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kirza4 [7]
3 years ago
7

Solve the system of equations 2x+y+z=1 2x-y-3z=-3 x-2y-4z=-2

Mathematics
1 answer:
allochka39001 [22]3 years ago
5 0

Answer:

 {x,y,z} = {2,-8,5} 

i had this question before

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A store buys frozen burritos from a supplier for $1.40 each. The store adds a markup of 80% to determine the retail price. This
boyakko [2]
$1.40  -  price from a supplier = 100%
100% + 80% = 180% = 1,8  -  the retail price

1,40 * 1,8 = $2,52 - the retail price 

100% - 25% = 75% = 0,75  -  on sale for 25% off 

2,52 * 0,75 = $1,89  -   the sale price.


8 0
3 years ago
Noelia has 144 role-playing cards. She and
scZoUnD [109]

Noelia has 216 cards after buying part of the set with her friends.

<h3>What is addition?</h3>

Combining items and counting them as a single, large group is done through addition.

Given that, Noelia has 144 role-playing cards.

Now, she bought 72 cards more, therefore, the number of cards Noelia has is:

144 + 72

= 216

Hence, Noelia has 216 cards after buying part of the set with her friends.

Learn more about the addition:

brainly.com/question/29560851

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7 0
1 year ago
Read 2 more answers
3x^2-5x-7 find the sum and product​
Bad White [126]

Answer:

s =  \frac{5}{3}

p =  \frac{7}{3}

Step-by-step explanation:

for this equation

a=3

b= -5

c = -7

The sum of equal to

-  \frac{b}{a}

and the product is equal to

\frac{c}{a}

. All you do is replace the values. You can prove both of those using the quadratic formula.

3 0
3 years ago
A car takes 65.1 seconds to travel 1 mile. How long does it take the car to travel ​4.3 miles? First round to the nearest whole
Elodia [21]
279.93 ≈ 280 seconds or 4 minutes 40 seconds
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3 years ago
Find the volume of x.
bogdanovich [222]

Answer:

98 degrees

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52 + 30 = 82

180 - 82 = 98

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3 years ago
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