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AlekseyPX
2 years ago
5

Verify that each equation is an identity. Show Work plzz!!

Mathematics
1 answer:
Anna [14]2 years ago
5 0

Answer:

Step-by-step explanation:

( a + b )( a - b ) = a² - b²

( 1 + sin x )( 1 - sin x ) = 1² - sin² x = cos² x

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How many quarters make a whole​
Eduardwww [97]

Answer:

4

Step-by-step explanation:

4×(1/4) = 1

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3 0
3 years ago
Help with #1 please?
anygoal [31]
7/9 + 5/6 + 3 2/3
7/9 + 5/6 + 11/3
Common denominator is 18 so we get
14/18 + 15/18 + 66/18
= 95/18 cups of milk
Multiply this by 3 (since he uses 1/3 cups per latte)
= 285/18 = 15 15/18 = 15 5/6 cups of latte
7 0
3 years ago
Suppose that (x, -8/17) is a point in quadrant IV lying on the unit circle.
AlladinOne [14]
Since the point lies on the unit circle, it satisfies

x^2+\left(-\dfrac8{17}\right)^2=x^2+\left(\dfrac8{17}\right)^2=1

Solving for x gives two possible solutions:

x^2=1-\left(\dfrac8{17}\right)^2
x=\pm\sqrt{1-\left(\dfrac8{17}\right)^2}

Given that x is in quadrant IV, you know that its value must be positive, so

x=\sqrt{1-\left(\dfrac8{17}\right)^2}=\sqrt{\dfrac{225}{289}}
7 0
3 years ago
I need help, so can I get help please???​
notsponge [240]

Answer:

The answer is 5.5, 6.0 and 8.0

7 0
3 years ago
A skirt originally cost $28. Alicia pays $21 for the skirt during a scale. What percent does Alicia save with the sale? (helpp )
kow [346]

Answer:

25% is the answer.,....

money Alicia save= 28-21= 7

percentage Alicia saves with the sale= 7/28*100

= 25%

3 0
3 years ago
Read 2 more answers
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