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AleksandrR [38]
3 years ago
9

Find the possible value or values of y in the quadratic equation z^2 - 4z+ 4 =0

Mathematics
1 answer:
jeyben [28]3 years ago
5 0
Didn't you mean "Find the possible value or values of z?  y is not at all present in this equation.

z^2 - 4z + 4 = 0 can be factored into (z-2)(z-2).  Thus, the given equation has two equal, real solutions:  z=2 and z=-2.
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Ms. Velez will use both x gray bricks and y red bricks to build a wall around her garden. Gray bricks cost $0.45 each and red br
Alekssandra [29.7K]

It is given in the question that

Ms. Velez will use both x gray bricks and y red bricks to build a wall around her garden. Gray bricks cost $0.45 each and red bricks cost $0.58 each. She can spend up to $200 on her project, and wants the number of red bricks to be less than half the number of gray bricks.

Maximum she can spend is $200. That is

0.45x + 0.58y \leq 200&#10;\\  y< \frac{1}{2} x

And

x\geq 0 , y \geq 0

And that's the required inequalities .

7 0
3 years ago
What is the greatest common facter of 48 and 84​
Snowcat [4.5K]

Answer:12

Step-by-step explanation:

The prime factorization of 84 is 2×2×3×7 . The prime factorization of 48 is 2×2×2×2×3 . . Therefore, the GCF is 2×2×3=12

8 0
3 years ago
If you travel 70000 M at a rate of 25 m/s and , how long does it take to complete the trip?
ivolga24 [154]

Answer:

Time=2800 seconds.

Time in minutes= 46.67 minutes

Time in hours= 0.778 hours

Step-by-step explanation:

Distance traveled= 70000 m

Rate or speed of travel= 25m/s

To calculate the time for the travel, we multiply the rate of travel by the distance covered or traveled.

Rate= distance/time

Time= distance/rate

Time= 70000/25

Time=2800 seconds.

Time in minutes= 2800/60

Time in minutes= 46.67 minutes

Time in hours = 2800/(60*60)

Time in hours= 2800/360

Time in hours= 0.778 hours

8 0
3 years ago
Write each expanded expression as a power.<br> 1.7 x 1.7 x 1.7 =
zhuklara [117]

Answer:

1.7^3

Step-by-step explanation:

i cannot see your answer options so I hope this helps!!!!

3 0
3 years ago
Solve 0=4x^2+12x+9 using the quadratic formula.
MAXImum [283]
The quadratic formula is x =  \frac{-b \pm \sqrt{b^2 - 4ac} }{2a}.  With the values from this equation plugged in, it looks like this:

x = \frac{-12 \pm \sqrt{12^2 - 4(4)(9)} }{2(4)} \\  \\ x = \frac{-12 \pm \sqrt{144 - 144} }{8}  \\  \\ x =  \frac{-12}{8}  \\  \\ x = - \frac{3}{2}

The solution is x = - 3/2
7 0
3 years ago
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