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UkoKoshka [18]
3 years ago
9

Combine like terms and write 4y + 5y2 - 6 - 5y + 27 - y2 in standard form.

Mathematics
2 answers:
gulaghasi [49]3 years ago
6 0

Answer:

4y^2-y+21

Step-by-step explanation:

soldi70 [24.7K]3 years ago
5 0

Answer:

4y^2 – y + 21

Step-by-step explanation:

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A rope is cut into equal pieces, and 8 of the pieces are used to tie up
slava [35]

Answer:A

Step-by-step explanation:

8 is the only equal number

6 0
3 years ago
Read 2 more answers
Find x in DEF<br><br>A. 6<br>B. 6 (square root 2)<br>C. 6 (square root 3)<br>D. 12​
netineya [11]

Answer:

B. 6√2

Step-by-step explanation:

We can use the Pythagorean Theorem to solve this out. The Pythagorean Theorem states that for any right triangle with the shortest sides (called legs) as a and b and the longest side (called the hypotenuse) as c:

a² + b² = c²

Here, a = b = 6, so:

6² + 6² = c²

36 + 36 = c²

72 = c²

c = √72 = 6√2

Now, we see the answer is B.

However, there's a trick to solving these kinds of problems. Notice that DEF is both an isosceles triangle and a right triangle. We call these 45-45-90 triangles because those are the angles of the triangle.

One characteristic of these types of triangles is that their leg to leg to hypotenuse ratio is 1 : 1 : √2, always. We could apply that here. We see that the legs are 6, so we could find the hypotenuse simply by multiplying 6 by √2, and we would get 6√2, which is exactly the value we obtained above.

Thus, the answer is B.

4 0
4 years ago
PLSSS HELP ASAP!!!!!!!
natali 33 [55]
I would say rectangular correct me if I’m incorrect :)
4 0
3 years ago
Find the angle complementary to the angle 80°25
Viefleur [7K]
<span>90 degrees 0 minutes is the same as 89 degrees 60 minutes.
89 degrees 60 minutes minus 80 degrees 25 minutes equals:
9 degrees 35 minutes.
-----
your answer is:
9 degrees 35 minutes</span>
5 0
3 years ago
Solve the following equation, answer as a reduced, mixed number. Then place the correct number in the box provided.
stira [4]

Answer:

The answer to your question is:   x = - 1 / 8

Step-by-step explanation:

                                           8( 1 - 5x ) = 13

                                            8 - 40x = 13

                                             - 40x = 13 - 8

                                             - 40x = 5

                                               x = - 5 / 40

                                               x = - 1 / 8

8 0
3 years ago
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