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astra-53 [7]
3 years ago
10

How did u get the z value

Mathematics
1 answer:
Keith_Richards [23]3 years ago
4 0

Answer:

The value Z is a variable.

Step-by-step explanation:

A variable is a letter.

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AB is tangent to circle O at B. Find the length of the radius, r, for AB = 5 and AO = 13.
alekssr [168]
ΔABO is a right triangle with AB⊥BO. The radius of the circle is BO. The Pythagorean theorem applies.
AO² = AB² + BO²
13² = 5² + r²
169 -25 = r²
r = √144 = 12

The radius (r) is 12.
8 0
3 years ago
Read 2 more answers
Each container below describes a ratio of flowers.
Lady_Fox [76]

Answer:

Answer.

Step-by-step explanation:

Explanation.

5 0
3 years ago
(Adding and Subtracting Polynomials)
andrey2020 [161]

Adding and subtracting big polynomials like these are pretty easy. You just need to combine like terms. For example:

1.)

{5x}^{2}  +  {3x}^{2}  =  {8x}^{2}

2.)

({3x}^{2}  + 5xy) + (7xy + 2) =

{3x}^{2} + 12xy + 2

(The 3x^2 and the 2 stay intact while the 5xy and 7xy combine together)

All you have to do is combine the numbers that have the same powers of x and y with each other. x^2 will combine with x^2 and xy^2 wil combine with xy^2 exc. If there is no other number with the same x and y's, then you just leave it as it is in the answer.

Now with the original question, I see a -9xy^3, and thats gonna combine with the 3xy^3 in the second polynomial and the 2xy^3 in the third one.

- 9x {y}^{3}  + 3x {y}^{3}  + 2x {y}^{3} = \\  - 4x {y}^{3}

So far we have -4xy^3, the next term is going to be a -9x^4y^3, and that's gonna combine with the 3x^4y^3 in the third one.

- 9 {x}^{4} {y}^{3}  + 3 {x}^{4}  {y}^{3}  =  - 6{x}^{4}  {y}^{3}

We now finished adding the like terms that were in the first polynomial, we will move onto the second polynomial. The first term in this one is 3xy^3, in which we already added in the first step. At this point, it doesn't look like there are any other terms that have the same x and y behind them. So we can move on and write the final answer:

- 4x {y}^{3} - 6 {x}^{4} {y}^{3}  + 7 {y}^{4}  \\ - 8 {x}^{4} {y}^{4}

(All on the same line of course)

Also, for your second question, the order does not matter in which you write the terms. I could write the 7y^4 behind the -8x^4y^4 and it would still be the same answer.

If you have any other questions let me know :) while I double check my work.

6 0
3 years ago
Solve for the function below.<br> f (x)=3x – 6<br> where x = 5<br> O -4<br> O 21<br> O 2<br> O 9
Svet_ta [14]

Answer:21

Step-by-step explanation:

8 0
3 years ago
Evaluate c−d if c=1 and2/5 and d=5/6 . Express your answer in simplest form.
Andrews [41]

Answer:

\frac{17}{30}

Step-by-step explanation:

→ Substitute in the numbers

1\frac{2}{5} -\frac{5}{6}

→ Simplify

1\frac{2}{5} -\frac{5}{6}=\frac{7}{5} -\frac{5}{6}=\frac{42}{30} -\frac{25}{30} =\frac{17}{30}

5 0
2 years ago
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