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yarga [219]
3 years ago
7

How do i do xy=4 2x-y+2=0 i'm solving by substition

Mathematics
2 answers:
GarryVolchara [31]3 years ago
4 0

so I think the answer is very difficult ask to someone else

Step-by-step explanation:

xy=4

2x-y+2=0

igomit [66]3 years ago
4 0
Is it x+y=4 or x-y=4? I can help you solve in comments.
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it takes Maya 30 minutes to solve 5 logic puzzles, and it takes Amy 28 minutes to solve 4 logic puzzles. use models to show the
7nadin3 [17]

Answer:

Maya ---> 6\ minutes/puzzle

Amy ----> 7\ minutes/puzzle

see the procedure

Step-by-step explanation:

we know that

A relationship between two variables, x, and y, represent a proportional variation if it can be expressed in the form k=\frac{y}{x} or y=kx

Let

m ---> the number of minutes

p ---> the number of puzzles

In this problem, the relationship between the variables m and p represent a proportional variation

so

m=kp

Maya

it takes Maya 30 minutes to solve 5 logic puzzles

we have

m=30, p=5

Determine the value of the constant of proportionality k

k=\frac{m}{p}

substitute the given values

k=\frac{30}{5}=6\ minutes/puzzle

The value of the constant k is the same that the slope or unit rate

The equation is equal to

m=6p

Amy

it takes Maya 28 minutes to solve 4 logic puzzles

we have

m=28, p=4

Determine the value of the constant of proportionality k

k=\frac{m}{p}

substitute the given values

k=\frac{28}{4}=7\ minutes/puzzle

The value of the constant k is the same that the slope or unit rate

The equation is equal to

m=7p

8 0
4 years ago
Please help right away
Irina-Kira [14]

Answer = 40

Hopefully this is right!

4 0
4 years ago
What is the total probability of ending up with 3 blue marbles out of 7 marbles from the bag?
vova2212 [387]
To find the probability simply divide the number of blue marbles by the total:

SO, 3 / 7 = 0.42857 
p = 0.429
3 0
3 years ago
To make dough Reba needs 2 1/2 cups of flour how much flour does she need to make 5 batches of dough
Nataly_w [17]
12 1/2 cups of flour for that amount dough
3 0
4 years ago
Read 2 more answers
What 14grams=kg so what is 14 dividend by 10to the third power
enyata [817]
You move the decimal that is behind the four and since kg is thousand so you move the decimal three times
.014
So the answer is .014 kg
7 0
3 years ago
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