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fenix001 [56]
3 years ago
11

Help, please! ASAP!!​

Mathematics
1 answer:
In-s [12.5K]3 years ago
5 0

Answer:

a) one solution

b) no solution

Step-by-step explanation:

Systems of equations can be described as having one solution, no solution or infinite solutions:

One solution:  'x' and 'y' are equal to only one value

No solution:  'x' and 'y' can not be solved with the given equations

Infinite solutions:  values for 'x' and 'y' include all real numbers

In order to evaluate the systems, putting them in the same format is your first step:

a) - y  = -5x - 6 or y - 5x = 6

   y - 5x = -6

Since both equations have the same expression 'y - 5x', but there are equal to opposite values, this system would have no solution, as this would not be possible to calculate.

b) y + 3x = -1

  y = 3x -1 or y - 3x = -1

Solving for 'y' by adding the equations and eliminating 'x', gives us:

2y = -2 or y = -1

Using y = -1 to plug back into an equation and solve for 'x':  -1 + 3x = -1 or x = 0.  Since 'x' and 'y' can be solved for a value, the system has just one solution.

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A. m∠ADB = (7x + 27)° Find x .
Helen [10]

Answer:

x = 9

y = 12

Step-by-step explanation:

✔️m<ADB = 90°

7x + 27 = 90

7x = 90 - 27

7x = 63

Divide both sides by 7

x = 9

✔️BC = 2(BD)

3y - 7 = 2(y + 3)

3y - 7 = 2y + 6

Collect like terms

3y - 2y = 7 + 6

y = 12

8 0
3 years ago
Write 2.96 as a mixed number or fraction in simplest form show your work
Readme [11.4K]
<h3>Hey there </h3><h3>Improper Fraction: \frac{74}{25 }</h3><h3>Mixed number/ Fraction : 2\frac{24}{25}</h3><h3>Check to see if it gives your decimal </h3><h3>\frac{296/4}{100/4}</h3><h3>\frac{296}{4} → 74 </h3><h3>\frac{100}{4} →25</h3><h3>We now have: \frac{74}{25}</h3><h3>Therefore, your result (answer) is: 2\frac{24}{25}</h3><h3>Good luck on your assignment and enjoy your day!</h3><h3>~LoveYourselfFirst:)</h3>
3 0
3 years ago
Johann has 27 head bands and 45 hair clips. She wants to bundle the head bands and hair clips to sell in a package. What is the
solmaris [256]
You need to find the Greatest Common Factor (GCF) of 27 and 45.
8 0
3 years ago
Read 2 more answers
Anyone know how to do this?!!
iren2701 [21]

Answer:

slope is -1/4

Step-by-step explanation:

\frac{-4}{12}=\frac{-1}{4}

\frac{-2}{8}= \frac{-1}{4}

and so on...

formula: \frac{x}{y}

hope this helps!!!

6 0
3 years ago
How do I use the info given in the table to figure out the answers?
stiv31 [10]
This is how you interpret the data and use it to solve the problem.

You can do this as direct proportion problem.

The number of gallons filled is proportional to the number of hours, and the rate of filling is:

rate = number of gallons / number of hours

From the two data in the second column you have:

number of hours = 3/4 h = 0.75 h

number of gallons = 637 + 1/2 gallons = 637.5 gallons

=>rate = 637.5 gal / 0.75 h = 850 gal/h

In the second column you have the number of hours and want to find the number of gallons, so assuming direct proportionality:

number of hours = 1/4 = 0.25

rate = 637.5 / 0.75 = x / 0.25

=> x = 0.25 * rate = 0.25 h * 850 gal/h  = 212.5 gallons.

And from the third column:

number of hours = 1 + 1/2 hours = 1.5 hours

rate = x / 1.5 => x = 1.5h * rate = 850gal/h * 1.5h = 1275 gallons

With that you have already solved a. and b.

You should know how to answer c. and d. This is how:

c. number of gallons = 5.5 hours

number of gallons = rate * number of hours = 850 gal/h * 5.5 h = 4675 gal.

d. number of gallons = 100 gal

rate = 100 gal / number of hours => number of hours = 100 gal / rate

=> number of hours = 100 gal / 850 gal/h = (2/17) h

Pass to minutes => (2/17) h * 60 min/h ≈ 7 min
7 0
3 years ago
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