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3 years ago

X:y=5:3 and x+y=56 work out the value of x-y

Mathematics

1 answer:

Vladimir79 [104]3 years ago

6 0

x - y = 14

given the ratio x : y = 5 : 3

then let x = 5x and y = 3x, hence equation can be expressed as

5x + 3x = 56

8x = 56 ( divide both sides by 8 )

x = 7

Hence x = 5 × 7 = 35 and y = 3 × 7 = 21

Thus x - y = 35 - 21 = 14

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2 years ago

Please find the square roots of the following complex number.

Nana76 [90]

Hey there,

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Keep in mind that this is solved for k = 0 and 1.

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3 years ago

What number is needed to complete the Pattern next 59, 51, 44, 38, 33, 29, 26, next

Vedmedyk [2.9K]

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Step-by-step explanation:

To get from 59 to 51 you subtract 8 then it was minus 7, then minus 6, then minus 5, and then it just kept going down like that

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3 years ago

Read 2 more answers

What is the length of the diagonal of a square with side lengths 7 square root of 2 ? round to the nearest tenth if necessary?

mr_godi [17]

There is 2 ways to solve this type of question.

Method 1
--------------------------------------------------
Formula
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a² + b² = c²

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Apply the formula
---------------------------------------------------
(7√2)² + (7√2)² = c²
c² = 98 + 98
c² = 196
c = √196
c = 14

--------------------------------------------------
Ans: The diagonal length is 14cm
--------------------------------------------------

_____________________________________________________________

Method 2
--------------------------------------------------
Identify the triangle
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This is a special triangle
45° - 45° - 90°

--------------------------------------------------
Property of the Angles
--------------------------------------------------
x - x - x√2

--------------------------------------------------
Find hypotenuse
--------------------------------------------------
Given that the non-hypotenuse is 7√2

Hypotenuse = (7√2)(√2)
Hypotenuse = 7 x 2
Hypotenuse = = 14cm

--------------------------------------------------
Ans: The diagonal length is 14cm
--------------------------------------------------

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2 years ago

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BartSMP [9]

Answer:

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3 years ago