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Charra [1.4K]
3 years ago
8

How can I solve for y and what is the answer

Mathematics
1 answer:
Aleks [24]3 years ago
3 0

Answer:

y = 38

Step-by-step explanation:

The sum of the 3 angles in a triangle = 180°

Consider the angles in the large outer triangle, then

x + 46 + 78 = 180

x + 124 = 180 ( subtract 124 from both sides )

x = 56

Consider the 3 angles in the smaller inner triangle, then

y + x + 86 = 180 , that is

y + 56 + 86 = 180

y + 142 = 180 ( subtract 142 from both sides )

y = 38

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Which is true about the completely simplified difference of the polynomials a3b + 9a2b2 − 4ab5 and a3b − 3a2b2 + ab5?
Mrrafil [7]

Answer:

The difference is a binomial with a degree of 6

Step-by-step explanation:

Given:

a^3b + 9a^2b^2 − 4ab^5 and a^3b − 3a^2b^2 + ab^5

Let A = a^3b + 9a^2b^2 - 4ab^5

B= a^3b - 3a^2b^2+ab^5

The difference between A and B is

A - B = a^3b + 9a^2b^2 - 4ab^5 - (a^3b - 3a^2b^2 + ab^5)

Open parenthesis

A - B= a^3b + 9a^2b^2 - 4ab^5 - a^3b + 3a^2b^2 - ab^5

= a^3b - a^3b + 9a^2b^2 + 3a^2b^2 - 4ab^5 - ab^5

= 12a^2b^2 - 5ab^5

The fist term 12a^2b^2 has 2+2=4 as a degree

The second term 5ab^5 has 1 +5 =6 as a degree

Therefore,

the answer is: The difference is a binomial with a degree of 6

3 0
3 years ago
Question 3 of 12
vichka [17]

Answer:

See explanation

Step-by-step explanation:

Given

Needed = 19000

Required

Support the jeweler's conclusion

From the question, we have that:

Boxes = 48

Bead = 400 per box

So, he bought a total of:

Total = 48 * 400

Total = 19200

<em>Since, he needed exactly 19000 and he has 192000, we can conclude that he has enough beads</em>

<em />

5 0
3 years ago
Kristine buys a 4-ounce bar of baking chocolate for 3.76. What is the unit price per ounce?
mart [117]

Sorry took so long doing homework at the same time! lol

ok so, all you have to do is divide 3.76 by 4 to get unit $:

3.76/4= $0.94

Hope this helps!! :)

3 0
3 years ago
Write a recursive formula for the following arithmetic sequence.<br> 8, 5, 2, −1,
Kamila [148]

Answer:

a_{n} = a_{n-1} - 3

Step-by-step explanation:

A recursive formula allows a term in the sequence to be found from the previous term by adding the common difference to it.

Here d = 5 - 8 = - 3, thus

a_{n} = a_{n-1} - 3 with a₁ = 8 ← recursive formula

8 0
4 years ago
Which expression is equal to -8?
belka [17]

Answer:

4 x -2

Step-by-step explanation:

4 * -2 = -8

-24 / -3 = 8

11 + (-3) = 8

11 - (-3) = 14

5 0
3 years ago
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