All categories

2 years ago

Help? 2. Twice the difference of a number and three is the sum of that number and four.

Mathematics

2 answers:

Tcecarenko [31]2 years ago

7 0

Answer:

-26 i think

Step-by-step explanation:

serg [7]2 years ago

5 0

Answer:

Step-by-step explanation:

<h3>First: (Equation)</h3>

Let,

The required number be = x

So,

Twice the difference of x and 3 = 2(x - 3)

Then,

Sum of the number x and 4 = x + 4

As we know,

By the problem, 

2(x - 3) = x + 4 [According to the problem]

<h3>Second: (Solution)</h3>

As given above,

2(x - 3) = x + 4

=> 2x - 6 = x + 4

=> 2x - x = 4 + 6

=> x = 10

Hence , the required number is 10.

You might be interested in

Tom took a trip of 1,300 miles. He traveled by train at 50 miles an hour and the same number of hours by plane at 275 mph. How m

Yuri [45]

Equation:
train distance + plane distance = 1300 miles

50x + 275x = 1300
x(325) = 1300
x = 4 hours
4x2=8
---
The trip took 8 hrs.

3 0

2 years ago

Read 2 more answers

<img src="https://tex.z-dn.net/?f=%5Cfrac%7Br%7D%7B2%7D%2B%5Cfrac%7Bs%7D%7Br%7D%20-%5Cfrac%7Br%7D%7B4%7D%2B%5Cfrac%7B1%7D%7B5%7D

zloy xaker [14]

Answer:

-1/20

Step-by-step explanation:

r/2 + s/r - r/4 + 1/5 =

= -1/2 + 0/(-1) - (-1)/4 + 1/5

= -1/2 + 1/4 + 1/5

= -10/20 + 5/20 + 4/20

= -5/20 + 4/20

= -1/20

3 0

3 years ago

Alicia has 3 1/6 yards of fabric. After making a tablecloth, she had 1 4/6 yards of fabric. Alicia said she used 2 3/6 yards of

Katarina [22]

An easier way to do this is to make the fractions improper fractions.
3 1/6 can be rewritten as 19/6. 1 4/6 can be rewritten as 10/6. (Multiply the denominator by the number at its side, and add it to the numerator).
2 3/6 is 15/6.
Subtract 10/6 from 19/6.
19/6-10/6=9/6.
9/6 is not 15/6, therefore she did not use 2 3/6 yards of fabric.

3 0

3 years ago

Read 2 more answers

The function g is given in three equivalent forms. Which form most quickly reveals the zeros (or "roots") of the function? Choos

koban [17]

Answer:

C. $g(x) = -2 \cdot (x + 1)\cdot (x+7)$