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2 years ago

11

points) Thursday, September 2, 2021 01:55 PM EDT Andrew has nine fewer coins than Casey. Bob has three more than twice as many c

oins as Andrew. Altogether, they have 536 coins. How many coins does Bob have?

1 answer:

swat322 years ago

3 0

Answer:

Andrew: 131 coins Bob: 265 coins Casey: 145 coins

Step-by-step explanation:

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Pls pls help! super desperate. find the lateral surface areas of the shapes shown in the photo

Alja [10]

Answer:

3- 0.14 2- 841

Step-by-step explanation:

3- 0.7*0.2=0.14

2- 56/2= 28

28*28+29*29= 841*841

square root of 841*841= 841

3 0

2 years ago

ADDITION OF INTEGERS<br> 21) 2 +6+-6<br> A) 0<br> B) 8<br> C) 1 D) 2

MrMuchimi

Answer:

D

Step-by-step explanation:

add up the positives then subtract the negative

5 0

2 years ago

Please help! Thanks! (:

djyliett [7]

Ok this is simple. first, lets look at the 123 angle, so the entire line is 180. subtract 123 from 180 and you have 57. a triangle will always add up to 180 degress aswell. so add 58 and 57 and thats 115. so since a triangle will always add up to 180, subtract 115 from 180 and you have the missing angle:

65!

4 0

2 years ago

Prove the trigonometric identity!<br><br> Please help!! 50 Points!

Rudiy27

Answer:

:)

Step-by-step explanation:

For simplicity I will substitue $x$ for β.

$1-sin(2x)=(cosx-sinx)^2\\1-2sin(x)cos(x)=cos^2x-2sin(x)cos(x)+sin^2x\\1=cos^2(x)+sin^2(x)\\1=1$

In the first step I used the identity

$sin(2x)=2sin(x)cos(x)$

And I factored out $(cosx-sinx)^2$

Then it's just simple algebra to cancel till the 3rd step where we used another identity derived from the Pythagorean Theorem.

$cos^2(x)+sin^2(x)=1$

That's it!

3 0

1 year ago

A washer and a dryer cost 792 combined. The washer costs 92 more than the dryer. What is the cost of the dryer?

WITCHER [35]

Answer:

divide 792 by 2

792÷2=304

then add 92 to the cost 304

304+92=396

6 0

1 year ago