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Elina [12.6K]
4 years ago
8

What is the missing constant term in the perfect square that starts with x^2 -20x

Mathematics
1 answer:
lidiya [134]4 years ago
7 0

Answer:

Missing constant: 100

Step-by-step explanation:

perfect square  (a - b)^2 = a^2 - 2ab + b^2

In this case

20x = 2 * x * 10

and

10^2 = 100

so

(x - 10)^2 = x^2 - 20x + 100

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Please help , I really need it thanks!
Nana76 [90]
The symbol "<=" without quotes means "less than or equal to"

-6x + 2y <= 42
-6x + 2y + 6x <= 42 + 6x ... Add 6x to both sides
2y <= 6x + 42
2y/2 <= 6x/2 + 42/2 ... divide every term by 2
y <= 3x + 21

So the answer is choice D
4 0
4 years ago
20) Explain what 25 ÷ 0.2 means
statuscvo [17]
It means 25 divided by 0.2

3 0
3 years ago
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Help on doing a test pls hurry
KiRa [710]

Answer:

c

Step-by-step explanation:

the answer is Cb

hehrdjnendjdb

4 0
3 years ago
The figure below shows an upside-down pyramid with a square base.
Stella [2.4K]

Answer:

d

Step-by-step explanation:

when cut you can see that the cutout will be a square

the base is a square and the cut is parallel to the base

therefore the cutout will be a square

8 0
2 years ago
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Convert 150 base 10 to a binary <br>number.
STALIN [3.7K]

Answer:

10010110

Step-by-step explanation:

A binary number is basically a number in base 2. So, each place represents a power of two. The ones place represents 1 or 2^0, the tens represents 2 or 2^1, the hundreds represents 4 or 2^2 and so on. To find the highest place needed to make in the number in binary, we find the greatest power of two that is below 150. In this case, it is 128. We can start by writing 128 in binary:

10000000

Now, we subtract 128 from 150 and find the largest power of two that is smaller than the difference. The largest power of 2 smaller than 22 is 16, so we put a one in the place for 2^4:

10010000

We can subtract 16 from 22 to get what is leftover to continue the process. We get 6, and the largest power of 2 smaller is 4. We can place a one in the hundreds place to represent it:

10010100

What is left is 6-4 or 2, which is just 2^1, so we can place it in the tens place:

10010110

8 0
3 years ago
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