15•(3 + b) = 45 + bUse properties and definitions of operations to show that the statement is true. Justify each step.

Answers

Answer 1

Answer: subtract 15 from both sides that gets rid of 15 and your left with 3b =30b divide 3 on both sides and the answer is 10

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Cos A/1-tan A + sin A/1-cot A =sin A + cos A

Answers

$(cosA)/( (cosA)/(cosA)- (sinA)/(cosA))+ (sinA)/( (sinA)/(sinA)- (cosA)/(sinA) )=sinA+cosA\n (cosA)/( (cosA-sinA)/(cosA)+ (sinA)/( (sinA-cosA)/(sinA) ) )=sinA+cosA\n ( cos^(2)A )/(cosA-sinA) }- (sin^(2)A )/(cosA-sinA)=sinA+cosA\n ( cos^(2)A-sin^(2)A )/(cosA-sinA)=sinA+cosA\ncos(2A)=(sinA+cosA)(cosA-sinA)\n cos(2A)=(sinA+cosA)(sinA-cosA)\ncos(2A)=sin^(2)A - cos^(2)A\ncos2A=cos2A \n1=1$

a football player gained 2 yards on one play. on the next play, he gained 5 feet. was his gain greater on the play or the second play? explain.

Answers

no his gain was 1 foot less.

What is the reciprocal of 2 3/8?

Answers

(see picture )
1. make 2 3/8 into a improper fraction
2. Fly the numerator and the denominator

the reciprocal is 19/8. Multiply 8 by 2 and add 3= 19/8

What is 17/100 into a decimal

Answers

The answer is 0.17. To convert fraction to a decimal, you must divide a numerator by a denominator. In 17/100, 17 is the numerator and 100 is the denominator, thus 17/100 = 17 : 100. When you divide by 100, put the decimal spot two spaces from the right-hand side because 100 has two zeros. Therefore: 17/100 = 17 : 100 = 0.1Hope this helps. Let me know if you need additional help!

Answer: 0.17

Step-by-step explanation: To write 17/100 as a decimal, remember that the hundredths place is two places to the right of the decimal point.

This means that 17/100 can be written as the decimal 0.17. Notice that we put the last digit of 19 in the hundredths place.

Suppose that an object is dropped from a height of h
meters and hits the ground with a velocity of
v
meters per second. Then
=v19.6h
. If an object is dropped from a height of
15.4
meters, with what velocity does it hit the ground?
Round your answer to the nearest tenth.

Answers

make hours to seconds to match meters
19.6*3600=70560 seconds
And is dropped from a height of 15.4 meters then the velocity will be
15.4m/70560s = 0.0002182539m/s

How can I learn elimination better?

Answers

Best thing I think you should do is to go to your teacher for clarification of any doubts and practise as many example and show it to your teacher or anyone who knows it better for approval.

To be able to eliminate, you have to make a variable have the same COEFFICIENTS but OPPOSITE SIGNS. Then solve for the other ( non eliminated) variable. After that, substitute its value to the original equation and solve now for the eliminated variable.

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The pressure P, of a gas varies inversely with its volume, V. Pressure is measured in units of Pa. Suppose that a particular amount of a gas is initially at a pressure of 84 Pa at a volume of 36 L. If the volume is expanded to 216 L, what will the new pressure be?