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dsp73
2 years ago
6

Evaluate each expression for t = 0, x = 1.5, y = 6, and z = 23

Mathematics
1 answer:
My name is Ann [436]2 years ago
3 0

Answer:

1. 11

2. 20

3. 34

4. 12.6

5. 18

6. 105

Step-by-step explanation:

We are told that ---> t = 0, x = 1.5, y = 6, and z = 23

1. y + 5

= 6 + 5

= 11

2. z - 2x

= 23 - 2(1.5)

= 23 - 3

= 20

3. 2z - 2y

= 2(23) - 2(6)

= 46 - 12

= 34

4. 2.6y - 2x

= 2.6(6) - 2(1.5)

= 15.6 - 3

= 12.6

5. 4(y - x)

= 4(6 -  1.5)

= 24 - 6

= 18

6. 4(2 + z) + 5

= 4(2 + 23) + 5

= 8 + 92 + 5

= 105

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denis-greek [22]

Remark

You'll see it a whole lot easier if you make a substitution so that it looks like something you have already seen

Solution

let y = x^2

x^4 = x^2 * x^2

x^4 = y * y

x^4 = y^2

Now the expression becomes

y^2 + 8 y - 9  =  z

(y + 9)(y - 1) = z

Now put the x^2 back in.

(x^2 + 9) ( x^2 - 1) = z

x^2 - 1 becomes x + 1 and x - 1. At this level x^2 + 9 can't be factored.

Answer

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3 0
3 years ago
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RideAnS [48]

The smallest of two integers is 61

Step-by-step explanation:

Let x be the smaller integer

Then the next integer will be:

x+1

According to given statement that the sum of both is 123

x+ (x+1) = 123\\x+x+1=123\\2x+1=123

Subtracting 1 from both sides

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Dividing both sides by 2

\frac{2x}{2}=\frac{122}{2}\\x=61

The smallest of two integers is 61

Keywords: Linear equations, Variables

Learn more about linear equations at:

  • brainly.com/question/2670657
  • brainly.com/question/2821386

#LearnwithBrainly

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Harrizon [31]
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Angle 3 = 90 degrees.
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sleet_krkn [62]
Answer:
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Explanation:
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Hope this helps!!
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yan [13]

Now,

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It is a right answer...

Thank you ♥♥

5 0
2 years ago
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