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Elina [12.6K]
3 years ago
13

Write an algebraic expression for the following phrase 3 more than twice a number

Mathematics
2 answers:
Digiron [165]3 years ago
8 0
X being the 'number'

2x + 3
EastWind [94]3 years ago
7 0

Answer:

2 x + 3

Step-by-step explanation:

3 more than twice a number

we have to write above equation in the form of algebraic expression

An algebraic expression is a combination of constant or variables by using suitable operators.

Let the Number be x

Twice a number i.e, we have to multiply the number by 2= 2 x

3 more i.e, we have to add 3 to above algebraic expression = 2 x+ 3

Hence, the above algebraic expression can be written as 2 x +3

Hence, the correct answer is 2 x + 3

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Nat2105 [25]

Answer:

(14,-1)

Step-by-step explanation:

okay so first you need to use the "x=4y+10" in the first equation.

Rewrite as

3(4y+10) +11y=7

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Rewrite as

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12y +30 +11y= 7

Subtract the 7 from both sides

12y+30+11y-7= 0

Combine like terms

23y+23=0

the best thing to do here is divide the equation by 23.

23/23 = 1

you'll have

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this simplifies to

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use this y value to solve for x

the easiest way to do this is start with the equation

x = 4y +10

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x = -4(-1) +10

x = 4 +10

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(14,-1)

3 0
3 years ago
Oliver's grandparents live 228.4 miles from his house. After traveling 137.65 miles, how many more miles does he have to go to a
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He still has 90.75 miles to go.

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Answer:

You may or may not need to include the units.

A = 18x - 18

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Graph is attached below. (2, 18)

Step-by-step explanation:

Substitute the information we need, "l" and "w", into the formulas.

l is for length, 6cm.

w is for width, (3x - 3)cm.

Use the formula for area of a rectangle.

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A = (18x - 18)cm²  or 18x - 18

Use the formula for perimeter of a rectangle.

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P = 2(3x + 3)cm

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Linear equations are written in the form y = mx + b, so we do not need to factor or further simplify the formulas.

To graph, first turn the "m" value into a fraction form.

8 -> 8/1

6 -> 6/1

You need two points to graph each line.

For each equation, the first point is on the y-axis at the "b" value. Then use the "m" in the equation to count the number of units up (numerator) and to the right (denominator).

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Easier Explaination:

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