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3 years ago

In arithmetic what variables look like

2 answers:

7 0

Variables are used in algebra and other branches of mathematis.

They are represented by letters. Usually ( but not necesserally) the letters at the end of the alphabet like x,y and z.

ad-work [718]3 years ago

4 0

Answer:

Step-by-step explanation:

In Arithmetic Operations variables are used to represent a yet unknown value that is needed for the final result. Variables are used in countless situations and are represented by letters or symbols. These letters and symbols are usually taken from the English Alphabet or the Greek Alphabet and used as variables. Since they are unknown until they are replaced by a value any symbol can be used.

I hope this answered your question. If you have any more questions feel free to ask away at Brainly.

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Find the gradient of the line segment between the points (-2,3) and (-5,7)

Rudiy27

Answer:

$\frac{4}{ - 3}$

Procedures:

$\frac {y2 - y1}{x2 - x1}$

$\frac{7 - 3}{ - 5 - - 2}$

$\frac{7 - 3}{ - 5 + 2}$

$\frac{4}{ - 3}$

7 0

3 years ago

Find parametric equations through point P=(2,2,7) in the direction of the vector v = (44, 14, -20)?

ycow [4]

9514 1404 393

Answer:

(x, y, z) = (2+44t, 2+14t, 7-20t)

Step-by-step explanation:

One way to write parametric equations for line L is ...

L = P + t·v

where P is the given point and v is the given direction vector. Using that form, we have ...

(x, y, z) = (2+44t, 2+14t, 7-20t)

If you like, you can remove a common factor of 2 from the coefficients of t.

(x, y, z) = (2+22t, 2+7t, 7-10t)

5 0

3 years ago

In 2010, the population of a city was 161,000. From 2010 to 2015, the population grew by 8%. From 2015 to 2020, it fell by 6.7%.

solniwko [45]

Answer:

99%

Step-by-step explanation:

2010 population = 161,000

From 2010 to 2015, the population grew by 8%.

2010 to 2015 = 161,000 + (8% of 161,000)

= 161,000 + (0.08 * 161,000)

= 161,000 + 12,880

= 173,880

2010 to 2015 = 173,880

From 2015 to 2020, it fell by 6.7%

2015 to 2020 = 173,880 - (6.7% of 173,880)

= 173,880 - (0.067 * 173,880)

= 173,880 - 11,649.96

= 162,230.04

2015 to 2020 = 162,230.04

what percent did the city grow from 2010 to 2020.

= 161,000 / 162,230.04 × 100

= 0.9924179270374 × 100

= 99.241792703743

Approximately, 99% to the nearest whole number

4 0

2 years ago

I'm haveing a hard time finding, 2y when y =6. Any one know?

scoray [572]

5.5 is your answer your welcome

6 0

3 years ago

Translate this phrase into an algebraic expression. 73 less than twice Jose's height Use the variable to represent Jose's height

Luba_88 [7]

Answer:

x-73

Step-by-step explanation:

Let x=Jose's height. If it says "less than," then that is subtraction. Since Jose's height is not defined, there is no specific number that can be used to describe "73 less than twice Jose's height," so I use the variable x, and then subtract 73.

8 0

2 years ago