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3 years ago

Which situation CANNOT be represented by this equation? -1\4x + 14 = 8

Mathematics

2 answers:

ahrayia [7]3 years ago

6 0

Probably C)
it starts with 8-foot diameter, and it is supposed to get smaller

This is just a theory

Dafna11 [192]3 years ago

4 0

Answer:

Situation (C) cannot be represent by the given equation.

Step-by-step explanation:

In (A), the balloon shrinks at the rate x. So, each 1/4 of an hour, its diameter reduces by the amount 1/4x.

So, it correctly represents the given equation.

In (B), the diameter reduces to 1/4 every minute.

So, in x minutes the amount reduced = 1/4x.

So, it also correctly represents the given equation.

In (C), the diameter reduces to 1/4 foot per minute but its original measurement is 8 foot and we are asked to find the expression when it is 14 feet.

So, the correct equation for this situation is 1/4x + 8 = 14.

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Jack is mowing lawns he mows lawns at a constant rate of 1/3 acre every 3/4 hour at this rate which ffraction re;presents the ac

Tanzania [10]

Answer:

4/9

Step-by-step explanation:

Given rate is 1/3 acre per 3/4 hours.

To calculate the rate per hour, we have to divide total acres by the fraction of hour

=> $\frac{\frac{1}{3} }{\frac{3}{4} }$

=> $\frac{4}{3*3}$

=> 4/9

5 0

3 years ago

Simplify the ratio 24/56

kakasveta [241]

The Answer Would Be 3/7
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6 0

3 years ago

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An empty suitcase has a mass of 2 kilograms. Draw a bar model to find its mass in grams.

miss Akunina [59]

Answer:

Since I can't draw it I'll give you the answer. 2,000 g.

Step-by-step explanation:

A kilogram is 1000 grams. Multiply 1000x2 to get 2000. But add the g for grams or the answer is considered wrong by teachers.

8 0

3 years ago

Find the error & find the correct answer 2In(x)=In(3x)-[In(9)-2In(3)] In(x^2)=In(3x)-[In(9)-In(9)] In(x^2)=In(3x)-0 In(x^2)=

Art [367]

Answer:

Error: $lnx^2=ln 3x$ not $ln\frac{3x}{0}$

Solution:x=0 and 3

Step-by-step explanation:

We have to find the error and correct answer

Given: $2ln x=ln(3x)-[ln9-2ln(3)]$

$lnx^2=ln(3x)-[ln9-ln3^2]$

Using the formula

$alog b=logb^a$

$lnx^2=ln(3x)-[ln9-ln9]$

$lnx^2=ln(3x)-0$

$lnx^2=ln(3x)$

$x^2=3x$

$x^2-3x=0$

$x(x-3)=0$

Therefore, x=0 and x=3

But last step in the given solution

$lnx^2=ln\frac{3x}{0}=\infty$

It is wrong this property is used when

$log m-log n$ then

$log\frac{m}{n}$

Hence, the student wrote $lnx^2=ln\frac{3x}{0}$ instead of $lnx^2=ln3x$ and solution is given by

x=0 and x=3

4 0

3 years ago

**22 POINTS** Please solve this fraction as a difference

Ghella [55]

Answer:

$\dfrac{x}{4}-\dfrac{7}{12}$

Step-by-step explanation:

The fraction is the equivalent of ...

$\dfrac{1}{12}{(3x-7)$

and the distributive property applies.

$=\dfrac{1}{12}(3x)-\dfrac{1}{12}(7)\\\\=\dfrac{3\cdot x}{3\cdot 4}-\dfrac{7}{12}\\\\=\dfrac{x}{4}-\dfrac{7}{12}$

3 0

3 years ago