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3 years ago

14

Simplify: (1 – 8) – (2 – 9).

2 answers:

kirill115 [55]3 years ago

7 0

Answer:

0

Step-by-step explanation:

Please give me brainliest :)

lakkis [162]3 years ago

3 0

<h2>>> Answer </h2>

________

$\:$

(1 - 8) - (2 - 9) = ...

= (-7) - (-7)

= -7 + 7

= 7 - 7

= 0

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What is the distance between the points (8, -3) and (1,5) ?

Yuri [45]

Answer:

$d=\sqrt{113}$

Step-by-step explanation:

$(8, -3)= (x_1,y_1)\\(1,5) =(x_2,y_2) \\\\d = \sqrt{\left(x_2-x_1\right)^2+\left(y_2-y_1\right)^2}\\\\d = \sqrt{\left(1-8\right)^2+\left(5-\left(-3\right)\right)^2}\\\\d = \sqrt{(1-8)^2 +(5+3)^2} \\\\d = \sqrt{(-7)^2+(8)^2}\\ \\d = \sqrt{49+64}\\ \\d = \sqrt{113}$

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3 years ago

Which shows the following expression after the negative exponents have been eliminated? m^7 n^3/ mn^-1 assume m=0 and n=0

aliina [53]

Given expression is $\frac{m^7n^3}{mn^{-1}}$ .

where $m \neq 0, n \neq 0,$

Now we have to simplify this and find the next step so that negative exponent gets eliminated.

We know that when negative exponent changes sign, then it moves from numerator to denominator or from denominator to numerator as shown in the formula:

$x^{-m}=\frac{1}{x^m}$

or $\frac{1}{x^{-m}}=x^{m}$

n has negative exponent in denominator so it will move to numerator and we get:

$\frac{m^7n^3n^1}{m}$

or $\frac{m^7n^3n}{m}$

Hence final answer is $\frac{m^7n^3n}{m}$ .

8 0

3 years ago

Read 2 more answers

A long-distance company charges a $5 per month line fee plus $0.25 per minute for long distance phone calls. Write and solve an

Olegator [25]

Answer:

84 minutes (1 hr and 24 mins)

Step-by-step explanation:

If the bill is $26, then that is what the equation will be equal to.
$5 fee will be added
$0.25 is 'per minute' so this is the number with the $x$

Let's put it together:

26 = 5 + .25 $x$

Subtract the 5...

21 = .25 $x$

Divide...

$\frac{21}{.25} = 84$

5 0

4 years ago

Jeffrey and Frank walk at different speeds.Frank’s walking speed can be represented by the equation y=85x, where is the time in

kolezko [41]

Answer:

Option (C)

Option (C)

Option (A)

Step-by-step explanation:

Part A.

Frank's walking speed can be represented by the equation.

Equation representing the speed is,

y = 85x

$\frac{y}{x}=85$

Therefore, walking speed of Frank = 85 meters per minute.

Option (C) will be the answer.

Part B.

Distance walked over the time by Jeffrey is given by the graph attached.

Equation for the speed will be,

y = $(\frac{400}{5})x$

y = 80x

Therefore, walking speed of Jeffrey = 80 meters per minute

Difference in the speed of Frank and Jeffrey = 85 - 80 = 5 meters per minute.

Jeffery walks 5 meters per minute slower than Frank.

Option (C) will be the answer.

Part (C)

Distance traveled by Frank in 16 minutes,

y = 85(16) = 1360 meters

Time taken to travel the same distance by Jeffrey will be,

1360 = 80x

x = $\frac{1360}{80}=17$ meters per minute

Option (A) will be the answer.

8 0

3 years ago

the length of a rectangle is 7 inches greater than three times its width write an expression to represent its area

icang [17]

Step-by-step explanation:

Let the length be L.

Let the breath be B.

So, we are given that

length of a rectangle is 7 inches greater than three times its width .

So, according to the Question,

L = 7+ 3B.

So, we know that:-

Area = Length× Breadth.

So, it will be

B × (7 + 3B) = Area.

So,

3B² + 7 is an expression to represent its area.

3 0

4 years ago