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Anon25 [30]
4 years ago
5

Find the value of c such that the expression is a​ perfect-square trinomial.

Mathematics
1 answer:
Kazeer [188]4 years ago
4 0

Answer:

81

Step-by-step explanation:

perfect-square trinomial form: a² +2ab +b²

a = x

2ab = 18x = 2 * x * 9

c = 9*9 = 81

You might be interested in
How do you represent selling 6 copies as an integer? How do you represent receiving 24 books as an integer?
Sholpan [36]

Answer:

How do you represent selling 6 copies as an integer? With -6

How do you represent receiving 24 books as an integer? With 24.

Step-by-step explanation:

The important thing to state here is what is the thing that you are counting.

If you count the number of copies/books that you have, then:

Selling 6 copies means that you have 6 copies less than before, then you would represent this with a -6.

"-6 copies"

And receiving 24 books means that you have 24 books more than before, then you will represent this with a +24.

"24 books"

(You do not need to write the "+" sign, it is implicit if you don't write any sign)

5 0
3 years ago
Simplify the expression 10a + 5b + 3 - 25a + 2b - 18 + 3b - 5a pls!!!
Scrat [10]

Answer:

−20a + 10b − 15

Step-by-step explanation:

The expression simplified is: −20a + 10b − 15

hope this helps

8 0
3 years ago
What is the value of 2|C| + 3|D|?
Ivenika [448]
Your answer is 2x|c|
5 0
3 years ago
A species of phytoplankton measures about 2 × 10−6 in. A grain of sand measures about 1 × 10−4 in. About how many times longer i
Gennadij [26K]

Answer:

B. 50 times greater

Step-by-step explanation:

Given;

size of phytoplankton = 2 × 10⁻⁶ in

size of sand grain = 1 × 10⁻⁴ in

Determine how many times longer the grain of sand is than the phytoplankton.

Divide the sand size by the phytoplankton size, to find out how much greater the sand is.

This can be done by equating it as follows;

2 × 10⁻⁶ (y)  = 1 × 10⁻⁴

y = \frac{1*10^{-4}}{2*10^{-6}} \\\\y = 50

Therefore, the grain of sand is 50 times greater than the phytoplankton

B. 50 times greater

7 0
3 years ago
This is my question it is in the screen shot please help me.
PolarNik [594]
4 in = 10.2 cm
7kg = 15.4 lbs
6 gal = 22.7 L
66 ft = 19.8 m
3 0
3 years ago
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