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Tanya [424]
2 years ago
15

What dose "{" mean in algebra? Ex. {4y-2x-8 {5x-4y=20

Mathematics
1 answer:
GaryK [48]2 years ago
4 0

Answer:

System of Equations

Step-by-step explanation:

A system of equations refers to a number of equations with an equal number of variables. We will only look at the case of two linear equations in two unknowns. The bracket on the left indicates that the two equations are intended to be solved simultaneously, but it is not always used.

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Can someone pleas answer this
Dima020 [189]

83.7 m

18.6 / 3.6 = 5.166667

16.2*5.166667 = 83.7 m

7 0
3 years ago
I’ll give brainliest:)
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6 0
3 years ago
Read 2 more answers
Kalon and his friend Marna own a chimney sweep service company. Working together, they can clean a chimney in 1 5/7 hours. If it
QveST [7]
The amount of work done by Kalon in an hour is equal to 1/4. This is based on his time to finish the job. Letting x be the number of hours Marna can finish the job alone will let her finish 1/x of the job in an hour. If their rates are added together and multiplied by the number of hours they worked together, the product should be one whole job.
                          (1/4 + 1/x)(1 5/7) = 1
The value of x is 3. Therefore, it will take 3 hours for Marna to clean the chimney alone. 
6 0
3 years ago
Read 2 more answers
What is the equation of the line whose slope is 3 that passes through the point (-1, 5).
sergey [27]
We knownthe equation of a line is y = mx + b. where m is slope and b is y intercept.

the point slope equation of a line is y - y1 = m (x - x1)

plug in x1 and y1 and m
y- (5) = (3)(x - (-1))
y - 5 = 3x + 3
y = 3x + 8
3 0
3 years ago
You are buying balloons that cost $.89 per package to decorate for a school dance. You have $14.75 to spend. How many packages o
rosijanka [135]

Answer:

$16.57

Step-by-step explanation:

If you divide $14.75 by $.89 it give you answer of 16.5730337 but if you take the first 4 numbers it gives you $16.57 and you don't need to round the 7

3 0
3 years ago
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