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DiKsa [7]
3 years ago
5

What is the value of k in y = kx, if y = 12 when x = 24?

Mathematics
2 answers:
Brrunno [24]3 years ago
6 0

Answer:

k = 0.5

Step-by-step explanation:

Substitue y = 12, x = 24 into y = kx.

12 = k × 24

24k = 12

k = 12 ÷ 24

k = 0.5 (final answer)

pickupchik [31]3 years ago
6 0

Answer:

the value of k is

k = 1/2

Step-by-step explanation:

from the question y = kx,

where y = 12 and x = 24

we will first of all make k the subject of the formula

y = kx

divide both sides by the coeficient of k which is x

y/x = kx/x

y/x = k .................................. k is the constatnt of proportionality

since we are given the value of x and y , we slot it in to determine the value of k.

k = y/x

k = 12/24

k = 1/2

check if your answer is correct , put the value of k into te question and see if LHS = RHS

y = kx

12 = 1/2 × 24

12  = 24/2

12 = 12....................... PROVED

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Answer:

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Step-by-step explanation:

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3 years ago
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Complete Equation:

p(x) = (x^2)(x - 4)^2(x +4) + 1980

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5 0
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An element with mass 800 grams decays by 8.2% per day. How much of the element is remaining after 15 days,
Serjik [45]

Given:

The initial mass of an element is 800 grams.

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The remaining element after 15 days.

Solution:

The exponential decay model is

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Therefore, the mass of the remaining element is 221.7 grams.

7 0
3 years ago
A trapezoid has an area of 329 square feet. If the bases are 30 feet and 17 feet, what is the height of the trapezoid in feet? F
ExtremeBDS [4]

Answer:

The correct option is C.  14 ft

Step-by-step explanation:

To calculate the height, we will follow the steps below;

Formula is given to be:  h = 2A / b1 +b2

where h = height of the trapezoid   b1 and b2 are the bases of the trapezoid    and A is the area of the trapezoid

From the question given;

Area A =329 feet²      b1 = 30 feet    b2 =17 feet  

We can now proceed to insert the values into the formula

h = 2A / b1 +b2

h= 2(329)  / 30 + 17

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6 0
3 years ago
a 36 inch board is to be cut into three pieces so that the piece is twice as long as the first piece and the third piece is 3 ti
ICE Princess25 [194]

Answer:

First piece = 6 inches

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Third piece = 18 inches

Step-by-step explanation:

Length of the first piece = x

Length of the second piece = 2x

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7 0
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