All categories

4 years ago

Translate in problem into algebraic expression. "The difference between twice a number and 4"

Mathematics

1 answer:

Ksju [112]4 years ago

4 0

2n - 4 (the difference means you're subtracting, twice a number is 2n and then 4 is 4, so it equals 2n - 4)

You might be interested in

Carl is wondering if the train he is riding home from school will leave early, on time, or late. The probabilities are

crimeas [40]

Answer:

[train leaves early] ---- [train leaves on time]------[train leaves late]

Step-by-step explanation:

5 0

4 years ago

Mr lim had just enough money to buy 6 similar lamps. However, he bought 3 such lamps and had $950 left. How much money did mr li

Artyom0805 [142]

Let the cost of a lamp = x

6 lamps would cost 6x

He bought 3 lamps at 3x plus Thad 950 left.

3 lamps plus the 950

Would be the same amount as 6 lamps:

Set up an equation and solve for x:

3x + 950 = 6x

Subtract 3x from both sides:

950 = 3x

Divide both sides by 3:

X = 316.67

Each lamp was $316.67

Multiply the price of a lamp by 6:

316.67 x 6 = 1900

He had $1900

6 0

3 years ago

Read 2 more answers

Need help please. Thanks so much.

Bingel [31]

Answer:

$(-1,\frac{17}{6})$

$(3,\frac{3}{2})$

$(-5,\frac{25}{6})$

Step-by-step explanation:

The given equation is $2x+6y=15$

We substitute the ordered pairs to see which ones satisfies the equation.

For (-1,-8), we put x=-1 and y=-8 to get:

$2(-1)+6(-8)=^?15$

$-2+-48=^?15\\-50=^?15$

This is not true.

For $(-1,\frac{17}{6}))$ we put x=-1 and $y=\frac{17}{6}$ to get

$2(-1)+6*\frac{17}{6})=15\\ -2+17=15\\15=15$

This is true

For (3,3/2) we have 2(3)+6(3/2)=15

This implies 6+9=15

15=15

This is also True

For (-5,25/6), we have 2(-5)+6(25/6)=-10+25=15

This is also true.

8 0

3 years ago

the radius of a circular playground is 77 metre.Calculate the distance covered by a runner in 5 complete rounds around the groun

Shtirlitz [24]

Answer:

2419.0265 meters

Step-by-step explanation:

To find the answer you must first find the circumference of the circle. The circumference formula is C = 2 \pi r. So if you plug in 77 you get 483.8053. Then multiply that by 5 and you will have your final answer.

5 0

3 years ago

A x 4 = 4 solve for a

Murrr4er [49]

Answer:

Divide each term by x^4 and simplify.

a=4/x^4

7 0

3 years ago

Read 2 more answers