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2 years ago

Can someone help please my sister needs it though with the whole thing

Mathematics

1 answer:

Trava [24]2 years ago

7 0

Answer:

Step-by-step explanation:

a² + b² = c²

can someone help please my sister needs it though with the whole thing

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Prove the following identities : i) tan a + cot a = cosec a sec a

inysia [295]

Step-by-step explanation:

$\tan \alpha + \cot\alpha = \dfrac{\sin \alpha}{\cos \alpha} +\dfrac{\cos \alpha}{\sin \alpha}$

$=\dfrac{\sin^2\alpha + \cos^2\alpha}{\sin\alpha\cos\alpha}=\dfrac{1}{\sin\alpha\cos\alpha}$

$=\left(\dfrac{1}{\sin\alpha}\right)\!\left(\dfrac{1}{\cos\alpha}\right)=\csc \alpha \sec\alpha$

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3 years ago

Jackie has a jar of 54 coins consisting of dimes and quarters. If she has a total of $10.05, how many dimes does she have?

Jlenok [28]

31 dimes and 23 quarters

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4 years ago

Determine if the two expressions are equivalent and

boyakko [2]

9514 1404 393

Answer:

yes. Commutative Property of Addition

Step-by-step explanation:

The commutative property of addition tells you that the order of the addends is immaterial. These expressions are equivalent.

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3 years ago

Simon drove for 2 1/2 hours to get from his house to the beach. Simon averaged 55 miles per hour on the trip. What is the distan

Sav [38]

Answer:

The distance from Simon's house to the beach is 137.5 miles

Step-by-step explanation:

we know that

The speed is equal to the ratio of the distance and the time

Let

s ----> the speed in mph

x ----> the distance in miles

y ---> the time in hours

$s=\frac{x}{y}$

we have

$s=55\ mi/h$

$y=2\frac{1}{2}\ h=\frac{2*2+1}{2}=\frac{5}{2}\ h$

substitute in the formula and solve for x

$55=\frac{x}{(5/2)}$

$x=(5/2)55\\x=137.5\ mi$

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3 years ago

Find the measure of each of the numbered angles.

Keith_Richards [23]

I think (not for sure),,, 1 =49, 2 =61, 3= 70, 4 =70, 5 =47

5 0

3 years ago