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Olegator [25]
3 years ago
6

Which polynomial is a difference of two squares? (4 points)

Mathematics
1 answer:
Zinaida [17]3 years ago
7 0

Answer:

{x}^{2}  - 36

Step-by-step explanation:

{x}^{2}  - 36 \\  \\  =  {x}^{2}  -  {6}^{2}

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Need these 2 questions answer fast pls
Alexxandr [17]

Answer:

4a) The sides are not scaled up equally for the sides. Plus, B is not a right triangle since it does not satisfy the pythogorean theorem.

4b) 6, 8, 10

5 0
3 years ago
Solve using substitution for x and y 5x+y=16 <br> y=2-3x
valentina_108 [34]

Answer:

X = 7   Y = -19

Step-by-step explanation:

If you want to solve this equation by substitution then you have to put the second equation in, so it will look something like this

5x + 1(2-3x)=16

Apply distributive property to solve.

Once you find x, plug it in to find y

To double check your work, you can plug the coordinated values back in

-19 = 2 - 3(7)

-19 = 2-21

This is true, so our solution is correct.

Hope this helps :)

3 0
3 years ago
Read 2 more answers
Brian, Chris, and Damien took a math test that had 20 questions. The number of questions Brian got right is 14 more than 1/4 the
Levart [38]
B = 1/4c + 14
d = 5/4c - 2
b = d

1/4c + 14 = 5/4c - 2 ....multiply by 4
c + 56 = 5c - 8
56 + 8 = 5c - c
64 = 4c
64/4 = c
16 = c <== Chris

b = 1/4c + 14.....b = 1/4(16) + 14.....b = 4 + 14....b = 18 <== Brian
d = 5/4c - 2....d = 5/4(16) - 2.....d = 20 - 2.....d = 18 <== Damien

solution : Brain and Damien answered 2 more questions correctly then Chris did. <===
7 0
3 years ago
I neep help asap deadline 4:00pm
Sunny_sXe [5.5K]

Answer:

x = -2 to x = 1

Step-by-step explanation:

A function is constant when the y value does not change (i.e. the graph is a horizontal line). This is true between x = -2 and x = 1.

4 0
3 years ago
Read 2 more answers
Suppose a railroad rail is 3 kilometers and it expands on a hot day by 12 centimeters in length. Approximately how many meters w
inysia [295]
For small angles, x, in radians,
tan(x) ≈ sin(x) = x

Use this to create an approximate diagram for the problem as shown in the figure below.
The actual deflected shape is parabolic, but it is approximated by an isosceles triangle with small equal angles.

The extend length is 3 km + 12 cm, which is 
3000 + 0.12 = 3000.12 m

Half of the extended length is 1500.06 m

Let h+  the rise of the center of the rail above ground.
From the Pythagorean theorem, obtain
h² + 1500² = 1500.6²
h² = 1500.06² - 1500² = 180.004
h = 13.4 m, which is about 0.9% of the original length.

Answer:  13.4 m

8 0
3 years ago
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