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Rudiy27
3 years ago
14

Please help, and please give me an explanation.

Mathematics
1 answer:
vichka [17]3 years ago
7 0
I Believe that it is not the last 3 Answers.
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Find 2x2 − 2z4 + y2 − x2 + z4 if x = −4, y = 3, and z = 2.<br><br> Is -3 the correct answer?
Ket [755]
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
6 0
3 years ago
Which of the following would be the best example of parallel lines in the real world
Tema [17]

Answer:

Real life example of parallel lines are railroad tracks and rows in a garden. Also the lines on a basketball court are parallel so basically C if im positive

Step-by-step explanation:

Some examples include the structural frames of buildings, railroad tracks, windows (opposite sides), sailboats, steps, and paper.

parallel bars in men's gymnastics

Also anything that is shaped as a rhombus, square or a rectangle. ( added by a.m.b.)

5 0
3 years ago
Read 2 more answers
Please help idk thisssss
Alekssandra [29.7K]
ANSWER
0.073 \% = 0.00073


EXPLANATION

Recall that,

\% =  \frac{1}{100}


That is why
100\%
is equivalent to
1.





This implies that,


0.073\% = 0.073 \times  \frac{1}{100}






This is the same as,


0.073\% = \frac{0.073}{100}


When we are dividing by
100
we move the decimal point backwards two times.


This implies that,

0.073\% = 0.00073


6 0
3 years ago
Read 2 more answers
The aquarium charges an entrance fee of $5 per child and $12 per adult. On one day, 100 people visited the aquarium. They collec
igor_vitrenko [27]

Answer:

We set up 2 equations

A) C + A = 100

B) 5C + 12A = 780

We multiply A by -5

A) -5C -5A = -500   then we add B

B) 5C + 12A = 780

7A = 280

Number of Adults = 40

5C = 780 - 40*12

5C = 780 -480

5C = 300

Number of Children = 60

Step-by-step explanation:

6 0
2 years ago
A student earns $11.75 per hour of gardening. if the student worked 21 hours a month then how much did they earn?
natta225 [31]

Answer: The student will earn $246.75 for gardening this month.


Hope this helps!


6 0
2 years ago
Read 2 more answers
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