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frozen [14]
3 years ago
13

Is 90 a perfect cube

Mathematics
1 answer:
lianna [129]3 years ago
5 0

Answer:

No, the first ten perfect cubes are 1, 8, 27, 64, 125, 216, 343, 512, 729 and 1000.

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Simplify<br> PLZ HELP QUICKLY
elena-14-01-66 [18.8K]

Answer:

c

Step-by-step explanation:

3 0
3 years ago
What is the nth term of quadratic sequence 4 7 12 19 28
Anni [7]
We find the first differences between terms:
7-4=3; 12-7=5; 19-12=7; 28-19=9.
Since these are different, this is not linear.
We now find the second differences:
5-3=2; 7-5=2; 9-7=2. Then:

Since these are the same, this sequence is quadratic.
We use (1/2a)n², where a is the second difference:
(1/2*2)n²=1n².

We now use the term number of each term for n:
4 is the 1st term; 1*1²=1.
7 is the 2nd term; 1*2²=4.
12 is the 3rd term; 1*3²=9.
19 is the 4th term; 1*4²=16.
28 is the 5th term: 1*5²=25.

Now we find the difference between the actual terms of the sequence and the numbers we just found:

4-1=3; 7-4=3; 12-9=3; 19-16=3; 28-25=3.

Since this is constant, the sequence is in the form (1/2a)n²+d;
in our case, 1n²+d, and since d=3, 1n²+3.
The correct answer is n²+3
7 0
3 years ago
The graph of y=x^3 is transformed as shown below?
Anastasy [175]
Y= -2x^3 is the answer
Hope this helps!
8 0
3 years ago
Read 2 more answers
Whats the answer for this <br> 4b²+20b+25
WITCHER [35]
4b²+20b+25=0

Divide everything by 4 

b²+5b+ 6.25=0 

use the quadratic formula 
x= (-b+ or - √b²-4ac) /2a
x= (-5 + or - √5²-4*1*6.25) /2(1)
x= -5/2 so
in this case, b= -5/2

7 0
3 years ago
Geometry triangle question ​
alexandr1967 [171]

Answer:

Step-by-step explanation:

6 0
1 year ago
Read 2 more answers
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