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wariber [46]
3 years ago
10

If cos A= .5410 and A is an angle between 0 and 90

Mathematics
1 answer:
tatyana61 [14]3 years ago
8 0
When you have a cosine value, in order to get the angle you have to look up the arc cosine value
arc cosine .5410 = 57.248 degrees
here's a good trig calculator
http://www.1728.org/trigcalc.htm

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What is the vertex?? Please answer QUICK!
astra-53 [7]

Answer:

D

Step-by-step explanation:

To obtain vertex form from the given equation use the method of completing the square

given 8y + x² = - y² - 181 + 26x

rearrange having the x terms and y terms together

add y² to both sides

8y + x² + y² = - 181 + 26x ( subtract 26x from both sides )

x² - 26x + y² + 8y = - 181

add (half the coefficient of the x/y terms )² to both sides

x² + 2(- 13)x + 169 +y² + 2(4)y + 16 = - 181 + 169 + 16

completing the square on both the x and y terms

(x - 13)² + (y + 4)² = 4 → D


5 0
3 years ago
Can someone help me out rq pls? Much would be appreciated.
stich3 [128]
I think your answer is B. -1/2

Explanation: the rise is -4 and the run is 8. If u divide those by 2, you get -2 and 4. You divide that by half and get -1/2??
8 0
2 years ago
Find the equation of the circle with center at the origin and x-intercepts 12 and -12
Troyanec [42]
Since the radius is 12, the equation is
.. x^2 +y^2 = 144
5 0
3 years ago
Penelope buys bracelets in bulk at a cost of $8 each to sell at her store. She uses a markup rate of 125%, which is added to the
slega [8]

Answer:

$18.00

Step-by-step explanation:

8 x 1.25 = 10

8 + 10 = 18

5 0
3 years ago
What is the truth value for the following conditional statement?
Studentka2010 [4]

Answer:

TT→T

Step-by-step explanation:

If p is false, then ~p is true.

If q is false, then ~q is true.

Now note that

  • If a and b are both true, then a→b is true.
  • If a is true, b is false, then a→b is false.
  • If a is false, b is true, then a→b is true.
  • If a and b are both false, then a→b is true.

In your case, both~p and ~q are true, then ~p→~q is true too (or TT→T)

3 0
3 years ago
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