3 years ago

Which expression correctly represents "twice the sum of four and a number"?

Mathematics

1 answer:

Lesechka [4]3 years ago

7 0

Answer:

2(4+x)

Step-by-step explanation:

"Twice the sum of" tells us it will be the equation times two

"the sum of four and a number" is easy, thats 4 + x

The second number is x because the number is not specified so we need a place holder, x in this case, to tell us that the number is not given.

All this put together = twice the sum of four and a number, or <u>2(4+x)</u>

You might be interested in

How is the product of 2 and -5 shown on a number line

otez555 [7]

Answer: on point -10

Step-by-step explanation:

Because 2*-5 is -10.

8 0

3 years ago

Read 2 more answers

Find 62(9) . Express your answer as a fraction in simplest form

Bas_tet [7]

Answer:

558/1

Step-by-step explanation:

7 0

3 years ago

Read 2 more answers

Rebecca and Tracy are cutting strips of fabric to make a quilt. Each strip of fabric needs to be 1/3 of a foot long. They have 1

Deffense [45]

48 strips of fabric.

6 0

3 years ago

The arch of a bridge forms the upper half of an ellipse. The arch is 6 meters above the 20-meter-wide river. Write an equation f

aksik [14]

Answer:

$\frac{x^2}{36} + \frac{y^2}{100} = 1$

Step-by-step explanation:

Required

The equation of the ellipse

This is calculated as:

$\frac{x^2}{a^2} + \frac{y^2}{b^2} = 1$

Where:

$b =6$ ---- height

$a = 0.5 * 20 =10$ --- width

So:

$\frac{x^2}{a^2} + \frac{y^2}{b^2} = 1$

$\frac{x^2}{6^2} + \frac{y^2}{10^2} = 1$

$\frac{x^2}{36} + \frac{y^2}{100} = 1$

3 0

3 years ago

How do we find the missing side of a shape when we are given the perimeter?

ryzh [129]

Answer:

subtract the inside number's

Step-by-step explanation:

first you add the inside numbers and then once you get that number lets to say you got 66, 66 times 66=4,356 then thats your number

4 0

4 years ago