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3 years ago

Solving one step equation x/9=-5

Mathematics

1 answer:

kogti [31]3 years ago

4 0

Answer:

x=-45

Step-by-step explanation:

You do inverse operation. Since x/9=-5, you would have to multiply -5 by 9 to get -45 because multiplication is the inverse of division.

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A regular tube of toothpaste costs $2.50 for 3.2 ounces. A travel size tube costs $1.00 for 1.2 ounces. Compare the prices and w

Elanso [62]

Answer:

The regular size is more economical.

Step-by-step explanation:

Consider the provided information.

A regular tube of toothpaste costs $2.50 for 3.2 ounces.

Find out the unit rate as shown below:

$\frac{\$2.50}{3.2}=\$0.78$

Therefore, the cost of one ounce is $0.78.

A travel size tube costs $1.00 for 1.2 ounces.

Find out the unit rate as shown below:

$\frac{\$1}{1.2}=\$0.833$

Therefore, the cost of one ounce is $0.833.

From the above calculation we can observe that regular tube toothpaste price is better buy.

Now find the percent as shown:

Firs find the difference

$0.83-$0.78 = $0.05

Therefore,

$\frac{0.05}{0.78}\times 100\approx 6.41$

Hence, regular tube is 6.41% less costly as compare to travel size.

3 0

3 years ago

PLEASE HELP

densk [106]

For this case we have that by definition, a function is of the form:

$y = f (x)$

So, we have the following system of equations:

$y = -6x + 2\\y = -2x + 4$

Equating the equations we have:

$-6x + 2 = -2x + 4$

Adding 2x to both sides of the equation:

$-6x + 2x + 2 = 4\\-4x + 2 = 4$

Subtracting 2 from both sides of the equation:

$-4x = 4-2\\-4x = 2$

Dividing between -4 on both sides of the equation:

$x = \frac {2} {- 4}\\x = - \frac {1} {2}$

Thus, the value of the variable "x" is -0.5.

Answer:

-0.5

6 0

3 years ago

Find three positive numbers the sum of which is 27, such that the sum of their squares is as small as possible.

Snowcat [4.5K]

Answer:

12+10+5

Step-by-step explanation:

I believe this is right

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kkurt [141]

Answer:

x= 10 The missing value is 10

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snow_lady [41]

Please give a picture so I can see

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