3 years ago

Which number is a reasonable estimate for 39x24?

Mathematics

2 answers:

Troyanec [42]3 years ago

8 0

Answer:

800

Step-by-step explanation:

I rounded 39 to 40 and 24 to 20 to get numbers that are eadult multiplied

then we can do 40*20 which is 800 using mental math

hope this helps <3

gregori [183]3 years ago

7 0

Answer:

1000

Step-by-step explanation:

4*2 = 8

40 * 20 = 800

4*5 = 20

40* 5 = 200

40 * 20 + 40 * 5 = 800 + 200 = 1000

40 * 25 = 1000

You might be interested in

To prove that vwz~yxz by sas similarity theorem which other sides or angles should be used

Fudgin [204]

Is there a picture?

4 0

3 years ago

Find the value of x. Round the length to the nearest tenth.

kirza4 [7]

Answer: 7.2ft

I explanation

4 0

3 years ago

The length of the rectangle is 3 times its width.

Blizzard [7]

Answer:

Since length is three times, hence it is 6 inches.

let the width be x.

then, length= 3x

perimeter= 16 inches.

perimeter of a rectangle = 2( L+B)

2(3x+x)=16.

3x+x= 16÷2

4x= 8

x= 2

since length=3x

hence, 3×2= 6 inches

4 0

3 years ago

f(x)=8−4x−x3 g(x)=x2+7x−9 Find f(x)+g(x). Select one: a. x3+x2+3x−1 b. −x3+x+3x−1 c. −x3+x2+11x−9 d. 8x2+3x−9x3

vovangra [49]

Answer:

Step-by-step explanation:

We are given the two functions:

$f(x) = 8 - 4x - x^3\text{ and } g(x) = x^2 + 7x - 9$

And we want to find:

$f(x) + g(x)$

Substitute:

$= (8 - 4x - x^3) + (x^2 + 7x - 9)$

Rewrite:

$= (-x^3) + (x^2) + (7x - 4x) + (8 - 9)$

Combine like terms:

$= -x^3 + x^2 +3x -1$

In conclusion:

$f(x) + g(x) = -x^3 + x^2 +3x -1$

Hence, our answer is B.

7 0

3 years ago

PLEASE HELP ME! I WILL MARK AS BRAINLIEST!!

Natalija [7]

I can't see the problem

5 0

4 years ago