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3 years ago

write two addition sentences where the sum is positive. in each sentence, one addend should be positive and the other negative

1 answer:

4 0

10 + (-5) = 10 - 5 = 5

-11 + 20 = 20 + (-11) = 20 - 11 = 9

102 + (-1) = 102 - 1 = 101

-20 + 60 = 60 + (-20) = 60 - 20 = 40

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12 is to 60 as 5 is to ?

Elina [12.6K]

12:60 equals to 5:25

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3 years ago

Rewrite the equation y – 4x = –9 in slope-intercept form.

torisob [31]

Answer: y=4x-9

explanation: move the -4x over to the other side and it becomes positive 4x and -9 stays the same.

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3 years ago

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Fifteen percent of the pigment in paint color A is black. Sixty percent of the pigment in paint color B is black. An unknown amo

Vitek1552 [10]

Answer: 0.15(40) + 0.6(x – 40) = 0.25(x)

Step-by-step explanation:

Hi, to answer this question we have to write an equation with the information given:

Fifteen percent of the pigment in paint color A is black

15% = 15/100 = 0.15 (decimal form)

0.15 A

Sixty percent of the pigment in paint color B is black

0.6 B

An unknown amount of paint color B is mixed with 40 ml of paint color A,

SO:

0.15 (0.40)

0.6 (x-0.40)

x = total amount of paint in the mixture of the two colors

The result is a paint that contains 25% (0.25 in decimal form)black pigment (x)

0.15(40) + 0.6(x – 40) = 0.25(x)

Feel free to ask for more if needed or if you did not understand something.

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3 years ago

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What is the graph of the function f(x) = the quantity of x plus 2, all over x minus 3

Andrej [43]

Answer:

Step-by-step explanation:

The given function is $f(x)=\frac{x+2}{x-3}$ and we need to graph it.

In order to graph this function, we'll find below things:

Horizontal asymptote:

Since the degree of both numerator and denominator is same. Hence, the horizontal asymptote is the ratio of leading coefficient of numerator to the leading coefficient of denominator.

Horizontal asymptote is y = 1/1 = 1

Vertical asymptote:

Vertical asymptote occurs where the denominator is zero.

$x-3=0\\x=3$

x-intercepts:

For x-intercept, y = 0

$\frac{x+2}{x-3}=0\\\\x+2=0\\x=-2$

y-intercepts:

For y-intercept, x= 0

$y=\frac{0+2}{0-3}=0\\\\y=-\frac{2}{3}$

Using these, we can draw the graph of the rational expression.

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3 years ago

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What percentage is 28 min of 3 h. <br><br> Plssss explain too!!

Olegator [25]

Answer:

it's 15.5555555556%

Step-by-step explanation:

$28 \: min \: of \: 3h$

$3h \: in \: min = 3 \times 60$

$3h = 180min$

$\frac{28}{180} = \frac{x}{100}$

$(x)180 = 28(100)$

$(x)180 = 2800$

$\frac{(x)180}{180} = \frac{2800}{180}$

$x = \frac{2800}{180}$

$x = 15.5$

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3 years ago

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