1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Harman [31]
3 years ago
12

Find 2x2 − 2z4 + y2 − x2 + z4 if x = −4, y = 3, and z = 2. Is -3 the correct answer?

Mathematics
1 answer:
Ket [755]3 years ago
6 0
We're given the algebraic expression 2x^2 - 2z^4 + y^2 - x^2 + z^4

By hypothesis, x = -4, y = 3 and z = 2

Let's replace each letter by its given value:

2x^2 - 2z^4 + y^2 - x^2 + z^4
2(-4)^2 - 2(2)^4 + (3)^2 - (-4)^2 + (2)^4
(2*16) - 2*16 + 9 - 16 + 16
32 - 32 + 9 - 16 + 16
9

So wrong. The correct answer is not -3, but 9.

Hope this helps! :D
You might be interested in
Mr. Daniel has 1 2/3 acres of land in which he plans to fertilize. If each bag of fertilizer covers 1/9 of an acre and be bought
tensa zangetsu [6.8K]
He will have 5 bags leftover.
7 0
3 years ago
Read 2 more answers
The observations of 124.53, 124.55, 142.51, and 124.52 are obtained when taping the length of a line. What should the observer c
mylen [45]

Answer: the observer should consider to eliminate or to retake the third measure.

Explanation:

The four measures taken are 124.53, 124.55, 142.51 and 124.52.

As it can be easily seen, the third measure is much different from the other three. This means that something went wrong during the observation: it can be either the measure taken wrong or that the number was written wrong (if you switch the 2 and the 4 you get a number similar to the other ones).

If the third measure is not considered, an estimate of the mean would place it around 124.5, while if the outlier (the detatched number) is considered an estimate of the mean would increase to about 129.

Therefore, in order to obtain a more reliable mean, the observer should consider to eliminate or to retake the third measure.

6 0
3 years ago
You have 59 total coins for a total of 12..05. You only have quarters and dimes. How many of each coin do you have?
vovikov84 [41]

41 quarters and 18 dimes.

6 0
3 years ago
Read 2 more answers
A triangle has sides of lengths 8, 15, and 17. Is it a right triangle? Explain.
8_murik_8 [283]

Answer:

yes it does

17 is the longest side.

Iff  Iff 17%5E2+=+8%5E2+%2B+15%5E2 it's a right triangle.  it's a right triangle.

Ps "iff" means if and only if

hope it helps

if so please mark me  as brainliest

3 0
3 years ago
Find an equation of the line parallel to Y = 2x+3 and that passes through the point (5,3)
Pepsi [2]

Answer:d

Step-by-step explanation:d

6 0
2 years ago
Read 2 more answers
Other questions:
  • Sara's mother has bought 90 lollipops and 105 pencils for goody bags for Sara's birthday. What is the largest number of goody ba
    15·1 answer
  • Use a graphing calculator to sketch the graph of the quadratic equation, and then state the domain and range. y=-5x^2+3x+10
    5·1 answer
  • Helpppp Plsssss Asap!! ​
    7·1 answer
  • Write an expression that is equivalent to 4n – 12 + 8y + (-3n).
    10·1 answer
  • A fair coin is tossed three times in a row. What is the probability of getting two tails in a row?
    9·2 answers
  • Can someone please help me?
    15·1 answer
  • Define a variable and write an inequality to model each situation. A light bulb can be no more than 75 watts to be safely used i
    5·1 answer
  • Metal A has a density of 12.7 g/cm3.
    9·1 answer
  • Use the information in this table(in the attachment) to help you answer the questions. Remember, you have a budget of $20,000 fo
    10·1 answer
  • 2. What is the equation of the line that passes through points (-8,3/2) and (-12, 5/2)
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!