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Aleonysh [2.5K]
3 years ago
9

The sum of two numbers is 56 and the difference is 14. What are the numbers?

Mathematics
1 answer:
sertanlavr [38]3 years ago
4 0

Answer:

x=35, y=21. (35, 21).

Step-by-step explanation:

x+y=56

x-y=14

------------

2x=70

x=70/2

x=35

35+y=56

y=56-35

y=21

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Answer:

Perimeter = 28.8 inch

Step-by-step explanation:

Step 1: Change given centimeters into inches according to the scale

2.5 / .5 = 5 <--- length in inches

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^^^This is the same thing as multiplying 2.5 cm and 4.7 cm by two. You could also reword the scale to be 1 cm = 2 inch if it makes more sense for you

Step 2: Find the perimeter using the formula: P = 2L + 2W

2 (5) + 2(9.4)

10 + 18.8

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3 years ago
Prove this identity sin(2A)=2sinAcosA.
34kurt
The solution for proving the identity is as follows:

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<span>Therefore, sin(2A) = 2sinAcosA

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7 0
3 years ago
The answers is what I got but it said it was wrong. can anyone hhelp find the right answer?​
klio [65]

Answer:

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Step-by-step explanation:

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