All categories

4 years ago

What are four equivalent expressions for 50-10 , 42+18 , 24x-8x , 5n+15n , 4(2+7p) , and 3(6m+3)

1 answer:

Crank4 years ago

7 0

There are infinite equivalents for each of the expressions, for example:

50-10 =

= 60 - 20
= 30 + 10
= 10 + 30
= 1/3 * 120

42 + 18 =

= 78 - 18
= 100 - 40
= 59 + 1
= 2 * 30

24x - 8x =

= 8x + 8x
= 1x + 15x
= $\frac{32x}{2}$
= 20x * 4/5

5n + 15n =

= 25n - 5n
= $\frac{60n}{3}$
= 10n + 10n
= 2 * 10n

4 (2 + 7p) =

= 4 * 2 + 4 * 7p
= 8 + 28p
= 4 (7p + 2)
= 4 * 7p + 8

3 (6m + 3) =

= 3 * 6m + 3 * 3
= 18m + 9
= 3 (6 + 6m - 3)
= 6 (3m + 1 1/2)

You might be interested in

Lin read 3/8 of a magazine article on Monday and 1/4 of the article on Tuesday. What fraction of the article did she read on Mon

larisa [96]

<span>Lin read 5/8 of the total article on Monday and Tuesday. Lin read 3/8 of the article on Monday. Lin read 1/4 of the article on Tuesday. 1/4 can be converted into 2/8. 2/8 plus 3/8 is 5/8, which cannot be further simplified.</span>

8 0

3 years ago

(3x+2x^4)+(3x-5x^4)

natka813 [3]

Answer:

6x -3x^4

Step-by-step explanation:

Eliminate parentheses. Since the multiplying coefficient is +1, the parentheses can simply be dropped:

= 3x +2x^4 +3x -5x^4

Add like terms (ones with the same exponent on the variable).

= 3x +3x +2x^4 -5x^4 . . . . . . . group like terms together

= (3+3)x +(2-5)x^4

= 6x -3x^4

7 0

4 years ago

What is the distance between -2.2 , 8.4 on a number line

leonid [27]

Answer:

10.2

Step-by-step explanation:

if u write is down with the decimals tgat and count that is what u would get also 2 plus 8 is ten and two pluse two is 41

5 0

2 years ago

I have 3 circles that are divided by halves,

aleksklad [387]

For each halve it would be a full or for all of the halve together it would be 6/2

8 0

3 years ago

If (cos)x= 1/2 what is sin(x) and tan(x)? Explain your steps in complete sentences.

Natasha_Volkova [10]

The correct answers are:
1) sin(x) = $\frac{ \sqrt{3} }{2}$
2) tan(x) = $\sqrt{3}$

Explanation:
Given:
$cos(x) = \frac{1}{2}$

Step 1:
Since, according to the Trigonometric identity:
$sin^2(x) + cos^2(x) = 1$ -- (1)

Step 2:
Plug in the value of cos(x) in equation (1):
$sin^2(x) + ( \frac{1}{2} )^2 = 1 \\ sin^2(x) + \frac{1}{4} = 1 \\ sin^2(x) = \frac{3}{4}$

Step 3:
Take square-root on both sides:
$\sqrt{sin^2(x)} = \sqrt{\frac{3}{4}}$

sin(x) = $\frac{ \sqrt{3} }{2}$

Now to find the tan(x), we would use the following formula:

tan(x) = $\frac{sin(x)}{cos(x)}$ --- (2)

Plug in the values of sin(x) and cos(x) in equation (2):
tan(x) = $\frac{ \frac{ \sqrt{3} }{2} }{ \frac{1}{2} }$

Hence tan(x) = $\sqrt{3}$

6 0

3 years ago

Read 2 more answers