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2 years ago

"The sum of one-third of a number and 4 is 7. What is the number? "

Mathematics

2 answers:

Whitepunk [10]2 years ago

7 0

Answer:

7-4= 3

one-third of 9 is 3

so the answer would be one-third of 9

Step-by-step explanation:

one-third of 9 is 3

3+4=7

spin [16.1K]2 years ago

3 0

Answer:

Step-by-step explanation:

This can be solved using Alegebra

First it must be made into an equation 4 + one thrid of a number something (x) = 7

4 + 1/3<em>x</em> = 7

Next it must be simplfied, 4 + 1/3<em>x</em> = 7

-4 -4

1/3<em>x</em>=3

X3 X3

x=9

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never [62]

Answer:

$y=22.5x$

Step-by-step explanation:

we have that

The scale drawing is

$\frac{1}{22.5}\frac{cm}{cm}$

we know that

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Let

x -----> drawing court lengths in cm

y ----> court lengths in cm

For x=40 cm

$\frac{1}{22.5}\frac{cm}{cm}=\frac{40}{y}\frac{cm}{cm}\\\\y=40*22.5\\\\y=900\ cm$

For x=80 cm

$\frac{1}{22.5}\frac{cm}{cm}=\frac{80}{y}\frac{cm}{cm}\\\\y=80*22.5\\\\y=1,800\ cm$

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A relationship between two variables, x, and y, represent a proportional variation if it can be expressed in the form $y/x=k$ or $y=kx$

For x=40 cm, y=900

substitute

$k=y/x$ -----> $k=900/40=22.5$

The equation is

$y=22.5x$

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3 years ago

A population of rabbits in a lab, p(x), can be modeled by the function p(x) = 20(1.014)x , where x represents the number of days

Nitella [24]

Answer:

20 = initial population of the rabbits

1.014 = growth rate of the rabbits

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Step-by-step explanation:

A population of rabbits in a lab, p(x), can be modeled by the function

p(x) = 20(1.014)^x

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Answer:

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