3 years ago

A(0, 1), B(4,1), C(1, 2), D(1,6): AB and CD

Mathematics

1 answer:

Ivanshal [37]3 years ago

8 0

The answer is D because I took the test

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A vegetable store sold 3 tons of vegetables less on the first day than on the second, and on the third day it sold 5/9 of the am

Ilya [14]

Let
x---------> quantity (ton) of vegetables sold the first day
y---------> quantity (ton) of vegetables sold the second day
z---------> quantity (ton) of vegetables sold the third day

we know that
x=y-3---------> equation 1
z=(5/9)*(x+y)------> equation 2
x+y+z=98-----> equation 3
substitute equation 2 in equation 3
x+y+[(5/9)*(x+y)]=98----> multiply by 9----> 9x+9y+5x+5y=882
14x+14y=882-----> equation 4

to resolve the equations system formed by
x=y-3
14x+14y=882

using a graph tool
see the attached figure
the solution is
x=30
y=33
x+y+z=98----> z=98-(x+y)----> z=98-63---> 35

the answer is
vegetables sold the first day----> 30 ton
vegetables sold the second day----> 33 ton
vegetables sold the third day------> 35 ton

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3 years ago

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Which of the following are composite numbers?

Lady bird [3.3K]

33, 21,49
Are all composite numbers. :)

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3 years ago

How many, and what type of, solutions does 6x2−2x+7=0 have?

Ber [7]

2 rational solutions

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3 years ago

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The prefix centi- means a. 10^3 b. 10^-2 c. 10^-3 d. 10^2

myrzilka [38]

The prefix centi- means 10-2
:)
Its B just without the ^

4 0

3 years ago

Mrs brown wants to cook 5 dishes on a stove with 2 burners. The times she needs to cook each dish are 40min,15min,35min,10min an

Sphinxa [80]

Answer:

75 minutes

Step-by-step explanation:

First cook 40 and 45 min dishes on separate burners. Then after 40 min put 35 min dish to be cooked on that burner. This will take 75 minutes time.

On second burner put firstly 15 min and then 10 min dish or vice versa as it doesn't matter. This second burner will take 70 minutes which is less then first one.

8 0

3 years ago