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3 years ago

The variable x represents a negative intege

Mathematics

1 answer:

nirvana33 [79]3 years ago

5 0

Paul’s assertion is sometimes correct

Example (when correct): x = -10, y = 5
Example (when incorrect): x = -5, y = 10

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You need 1 1/4 cups of sugar to make 20 cookies. To make 12 cookies you will need ____ cups of sugar?

iris [78.8K]

Answer:

0.75 or 3/4 cups

Step-by-step explanation:

Make a proportion

We need 1 1/4, or 1.25 cups of sugar for 20 cookies, and we need x cups of sugar for 12 cookies

1.25/20=x/12

To solve, we need to get the variable,x, by itself. It is being divided by 12. To reverse this, multiply both sides by 12.

12(1.25/20)=(x/12)12

The 12s on the right will cancel, and we are left with

0.75=x

0.75 is equivalent to 3/4

So, 0.75 or 3/4 cups of sugar is needed to make 12 cookies

4 0

3 years ago

((4)/(3v))-((1)/(v))=((v+2)/(2v^2))

Lerok [7]

Step-by-step explanation:

sper că te-am ajutat

5 0

3 years ago

Kevin cuts lawns during the summer months. He charges $10 plus $5 per hour. The algebraic model is C = 5h + 10, where C represen

zalisa [80]

Answer:

1 hour : 15 dollars

2 hours: 20 dollars

3 hours: 25 dollars

4 hours: 30 dollars

5 hours: 35 dollars

Step-by-step explanation:

Substitute the hour number in for h and solve. for example, if you were trying to find 5 hours, you would produce the equation c = 5(5) + 10. once you solve that you get c = 25 + 10 which is also c = 35.

8 0

3 years ago

<img src="https://tex.z-dn.net/?f=f%28x%29%20%3D%20%7B2%7D%5E%7Bx%7D%20%20%20%2B%203" id="TexFormula1" title="f(x) = {2}^{x} +

lisov135 [29]

The function is given $f(x)=2^x+3$ .

Now let's solve for $f(-2)$ .

$f(-2)=2^{-2}+3$

Rule of negative exponent: $x^{-1}=\frac{1}{x^1}$ .

$f(-2)=\frac{1}{2^2}+3$

$f(-2)=\frac{1}{4}+\frac{3}{1}$

Rule for sum of fractions: $\frac{a}{b}+\frac{c}{d}=\frac{ad+bc}{bd}$ .

$f(-2)=\frac{13}{4}$

And the result is:

$f(-2)=\boxed{\frac{13}{4}=3.25}$

4 0

3 years ago

How many minutes are 7 and 10 hour

Ivahew [28]

Answer:

a week and half a dy

Step-by-step explanation:

5 0

3 years ago

Read 2 more answers