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yan [13]
3 years ago
12

1.75x+1.25y=2 7x+5y=9 how many solutions does this system of equations have?

Mathematics
1 answer:
Vlad1618 [11]3 years ago
7 0

Answer:

true 7x+5y=9

Step-by-step explanation:

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1. Ana was washing dishes at the end of her shift at a restaurant. She washed 30 plates from 7:30 to 7:35. When she finishes was
frutty [35]
She washed 30 plates from 7:30 to 7:35.....so she washed 30 plates in 5 minutes.....30/5 = 6 plates per minute

so if she started washing plates at 7:15 and ended at 7:38...how many plates did she wash....
from 7:15 to 7:38 is 23 minutes...and if she can wash 6 plates per minute, then in 23 minutes, she can wash (23 * 6) = 138 plates <==

the equation...
y = -6x + b...with b being the number of plates she started with and x being the number of minutes and y being the plates she has left to wash...I am not 100% sure on this equation...I am so sorry


4 0
3 years ago
Why is using a compass and straightedge and compass better than technology
Dimas [21]

Technology comes from the Greek root \tau \epsilon \chi, meaning art or craft.


For the Greeks, a straightedge and compass was technology.


The nice thing about a straightedge and compass construction of any length is that there's always a corresponding algebraic form consisting of natural numbers combined via addition, subtraction, multiplication, division and square rooting (of positive numbers). So we get an "exact" answer, at least using radicals.


Compare that to the typical calculating technology we use today where the square roots turn into approximations. The calculator is worse, turning an exact answer into an approximation.


Straightedge and compass constructions play a large role in the development of mathematics but they're not really better, it's just how things went. By restricting ourselves to straightedges (linear equations) and compasses (circles, quadratic equations) we restricted the possible lengths we could construct. Understanding exactly how propelled mathematics forward for a couple of thousand years.




3 0
3 years ago
Change 8.94 into a fraction
Luba_88 [7]

Answer:

447 / 50

Step-by-step explanation:

447 / 50 Because if you divide it you will get 8.94 same answer

6 0
2 years ago
Read 2 more answers
What is x and y if x+y=60 and y=x+3
astra-53 [7]

Answer:

X=57/2, y=63/2

Step-by-step explanation:

5 0
2 years ago
A car can travel 30 miles on a gallon of gas and had a 20 gallon gas tank. Let g be the number of gallons of gas the car has in
Fudgin [204]

Answer:

The domain is the number of gallons and the range is the distance traveled.

Since the car can travel 30 miles one gallon of gas, we multiply by 12 to get the distance the car can travel in 12 gallons of gas.


5 0
2 years ago
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