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2 years ago

The measure of the reference angle is and sin 0 is

Mathematics

1 answer:

Masja [62]2 years ago

8 0

Check the picture below.

bear in mind that a reference angle, is just the angle the "terminal point" makes with the x-axis, in this case, the green one.

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Solve for b. 7 b 12 b= ✓ [?] Pythagorean Theorem: a2 + b2 = c2 Enter

fomenos

Answer: $b=\sqrt{95}$

Step-by-step explanation:

To solve for b, we want to use the Pythagorean Theorem as given.

b and 7 are the legs, and 12 is the hypotenuse.

$7^2+b^2=12^2$ [exponent]

$49+b^2=144$ [subtract both sides by 49]

$b^2=95$ [square root both sides]

$b=\sqrt{95}$

Now we know $b=\sqrt{95}$ .

6 0

2 years ago

What is the interquartile range of the data? 120, 140, 150, 195, 203, 226, 245, 280 235.5

zheka24 [161]

For the first one it's 90.5, I know cause I just took the test and it's right. The second one I'm not sure..

5 0

3 years ago

The library started the yoar with 14,341 books. At the end of the first week

Alexus [3.1K]

Answer:

the answer is 11788 :) your welcome

8 0

2 years ago

Ya idk how to do this plz help explain if you can

Svet_ta [14]

Answer:

92 attendees had activity cards

Step-by-step explanation:

Let x be the number of students with activity cards. Then 130-x is the number without, and the total revenue is ...

7x +10(130 -x) = 1024

7x +1300 -10x = 1024 . . . . eliminate parentheses

-3x = -276 . . . . . . . . . . . . . collect terms; subtract 1300

x = 92 . . . . . . divide by 3

92 students with activity cards attended the dance.

_____

Comment on the solution

Often, you will see such a problem solved using two equations. For example, they might be ...

Let 'a' represent the number with an activity card; 'w' the number without. Then ...

a+w = 130 . . . . the total number of students
7a +10w = 1024 . . . . the revenue from ticket sales

The problem statement asks for the value of 'a', so you want to eliminate w from these equations. You can do that using substitution. Using the first equation to write an expression for w, you have ...

w = 130-a

and making the substitution into the second equation gives ...

7a +10(130 -a) = 1024

This should look a lot like the equation we used above. There, we skipped the extra variable and went straight to the single equation we needed to solve.

5 0

2 years ago

2.Each purse contains 8 coins. Find a rule to give the total number of coins.

Masja [62]

If we have to find the total number of coins then we can use the following rule:

If Each Purse Contains 8coins ,then we can find total number of coins by multiplying 8 to the number of total purse

Thus,

︎⠀⠀ ⠀⠀ ⠀⠀ ⠀︎⠀⠀ ⠀⠀ ⠀8×Total Number of Purse.

4 0

2 years ago