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KonstantinChe [14]
3 years ago
11

Simplify the expressions by distributing the negatives and combining like terms ​

Mathematics
1 answer:
Illusion [34]3 years ago
5 0

Answer:

-2 times 6d=-12d

-2 times -11= 22

Answer:  -12d+22

Step-by-step explanation:

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Which algebraic expressions are polynomials? Check all that apply.<br>​
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4/x - x^2 and 3.9x^3-4.1x^2+7.3
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3 years ago
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Can someone help me out
vichka [17]

Answer: LAST OPTION.

Step-by-step explanation:

The Pythagorean Theorem states the following relationship between the three sides of a triangle that has an angle of 90 degrees, known as "Right triangle":

a^2=b^2+c^2

Where "a"is the hypotenuse and "b" and "c" are the legs of the right triangle.

If the triangle ABC is a right triangle then AB must be equal to BC^2+AC^2, then, you need to substitute the values into  a^2=b^2+c^2 to check this:

12^2=5^2+10^2\\144\neq 125

Then the triangle ABC is not a right triangle.

Therefore, the statement that justifies why this triangle is not a right triangle is:

5^2+10^2\neq 12^2

5 0
3 years ago
Pythagorean theorem in 3D.
White raven [17]

Answer:

<em>h = 6.2</em>

Step-by-step explanation:

You need to find h.

The dashed triangle is a right triangle. 8 is the hypotenuse. h is a leg. The other leg is the half of the side of the base, 5.

5^2 + h^2 = 8^2

h^2 + 25 = 64

h^2 = 64 - 25

h^2 = 39

h = \sqrt{39}

h = 6.244998...

h = 6.2

6 0
3 years ago
A DVD is being sold for $15.98 this is after a 45% discount what is the pre-discount price.
Yuri [45]

Answer:

$23.17

Step-by-step explanation:

change 45% to a decimal than multiply .45 by $15.98 then add 15.98

4 0
3 years ago
Can i get help with this pls
Mice21 [21]

Answer:

c = 117

d = 63

e = 63

Step-by-step explanation:

7 0
3 years ago
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