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4 years ago

If cos a = sin ß, what must be true about a and B?

Mathematics

1 answer:

Sloan [31]4 years ago

6 0

Answer:

a and B are complementary angles in a right triangle.

Step-by-step explanation:

For the rule to be true, the triangle must be a right triangle.

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The zero key on Evan's calculator is broken. Draw the keys he could push to help find the product. How many zeros should be in t

MaRussiya [10]

A - 3 o’s (draw the 9,x,7,0 keys from calculator)
B - 2 o’s (draw the 4,x,8,0 keys from calculator)
C - 3 o’s (draw the 6,x,4,0 keys from calculator)
D - 3 o’s (draw the 5,x,9,0 keys from calculator)

6 0

3 years ago

In its first year of business, Arlo’s Dry Cleaners had a closing balance of –$1,500. The second year it lost an additional $1,20

Alex

Answer:

-2700 dollars

Step-by-step explanation:

The first year we have a loss of 1500 dollars. On the balance sheet we write -1500, with the negative indicating loss. Some accounting practices will use parenthesis to mean loss, so you might see it as (1500). But in this problem, we'll use negative signs for loss.

The second year is loss of 1200. Add up the two losses (the positive versions of each) to get 1500+1200 = 2700. Then make the result negative. Taking one loss and adding more loss to it means your loss has gotten bigger. So that's why the closing balance at the end of year 2 is -2700 dollars, which is a loss of 2700 dollars.

4 0

3 years ago

HELP PLEASE! 30 POINTS AND WILL MARK BRAINLIEST.

erastovalidia [21]

Answer:

First you need to have a graph, a x and y graph. Then you start in the very middle of the graph because that is 0,0. So then you take the 9 because it is the x-cordinate and you go 9 to the right from 0,0. Then you go 22 up on the graph because it is thy y-coordinate. Do the same thing for the next one. Start in the middle at 0,0 and then move 10 to the right and 32 up. Do the same for the rest. Hope this helped. :)

Step-by-step explanation:

4 0

3 years ago

max picks two different cards without replacement from a standard $52$-card deck. what is the probability that the cards are of

nikdorinn [45]

The probability that cards are from different suits is $\frac{39}{51}$

Probability of an event E represented by P(E) can be defined as (The number of favorable outcomes )/(Total number of outcomes).

There are 4 suits hearts, diamonds, club and spade in a standard deck of 52 cards.

Each of them has 13 cards each .

So when we pick first card from a single suit

we can pick it in 13 ways , now 12 cards are left.

We can pick the 2nd card from the same suit in 12 different ways .

So to pick 2 cards from a single suit we have 13x12 ways.

to pick 2 card from 4 suits = 4x13x12=624 ways

Total ways of choosing 2 cards from the pack of 52 cards is 52 X 51 =2652

probability that the cards are of same suits= $\frac{624}{2652} =\frac{12}{51}$

probability that the cards are of different suits= $1-\frac{12}{51} =\frac{39}{51}$

Learn more about Probability here brainly.com/question/15263908

#SPJ4

3 0

2 years ago

PLEASE HELP, easy. <br> What are the exact solutions of x^2-5x-7=0 ?

Svetlanka [38]

X^2 - 5x - 7 = 0

x = (-b (+-) b^2 - 4ac) / 2a
a = 1, b = -5, c = -7

x = (-(-5) (+-) sqrt (-5^2) -4(1)(-7)) / 2(1)
x = (5 (+-) sqrt 25 + 28) / 2
x = (5 (+-) sqrt 53) / 2

4 0

4 years ago