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3 years ago

10

I need help on this ASAP no fofo answers

1 answer:

melomori [17]3 years ago

4 0

(hope this helps)

FINAL ANSWER:

(B) Equation of y =5x

EXPLANATION:

Not a complete representation due to the fact that it only shows students counting by 5. It can be used to create and equation of
Y= 5x because for every x, the y is 5 times more.

EX: 5 students. 5x5= $25. X=5 Y=25

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A rectangle with a length of L and a width of W has a diagonal of 10 inches. Express the perimeter P of the rectangle as a funct

KatRina [158]

<h2>Answer:</h2>

The expression which represents the perimeter P of the rectangle as a function of L is:

$Perimeter=2(L+\sqrt{100-L^2})$

<h2>Step-by-step explanation:</h2>

The length and width of a rectangle are denoted by L and W respectively.

Also the diagonal of a rectangle is: 10 inches.

We know that the diagonal of a rectangle in terms of L and W are given by:

$10=\sqrt{L^2+W^2}$

( Since, the diagonal of a rectangle act as a hypotenuse of the right angled triangle and we use the Pythagorean Theorem )

Hence, we have:

$10^2=L^2+W^2\\\\i.e.\\\\W^2=100-L^2\\\\W=\pm \sqrt{100-L^2}$

But we know that width can't be negative. It has to be greater than 0.

Hence, we have:

$W=\sqrt{100-L^2}$

Now, we know that the Perimeter of a rectangle is given by:

$Perimeter=2(L+W)$

Here we have:

$Perimeter=2(L+\sqrt{100-L^2})$

7 0

3 years ago

John played a note on his tuba that vibrated the air 120 times per second. If you play the note for 4 seconds, how many times in

Zigmanuir [339]

480

This is this awnser because its 120 a second, for 4 seconds so 4 times 120 = 480.

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3 years ago

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Which of the sums below can be expressed as 7(4 + 9)?

mezya [45]

Answer: Yes it is 28 + 63.

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3 years ago

Issuing a note payable for cash automatically results in a

Dmitry_Shevchenko [17]

Sry not sure this one is very confusing

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3 years ago

4x + 5y = 3<br>kx + 15y = 9 find k<br>

9966 [12]

Answer:

12

Step-by-step explanation:

4x + 5y = 3 ................ (i)

kx + 15y = 9................(ii)

Dividing eqn (ii) by 3, we get,

k/3 x + 5y = 3.............(iii)

Subtracting eqn (iii) by eqn (i), we get,

-4x - k/3 x = 0

or, -(4 - k/3 )x = 0

or, 4 - k/3 = 0/x

or, 4 - k/3 = 0

or, 4 = k/3

or, k = 4*3

:. k = 12 (Ans)

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3 years ago