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3 years ago

What strategy can be used to solve 8 x 25 x 23

1 answer:

7 0

The best way to multiply complicated problems mentally* is to break them into chunks.

Start with 20 times 8 to get 160, and then 8 times 5 to get 40. Add these together to get 200. 200 times 3 is 600, and 20 times 200 is 4000. Add these together to get your final answer, 4600.

In other words 8 x 20 + 8 x 5 = 200 200 x 3 + 200 x 20 = 4600

*I assumed you meant mentally, because otherwise you'd just multiply longhand, multiplying two of the three numbers and then multiplying their product with the third.

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o-na [289]

Answer:

465 Dollars

Step-by-step explanation:

15h+40f = Amount Charged

if: h = 7

f = 9

15(7)+40(9) = Amount Charged

105 + 360 = Amount Charged

465 = Amount Charged

He will charge 465 dollars.

8 0

3 years ago

Read 2 more answers

Divide. (–6m 7 + 20m 6) ÷ 2m 4 A. –3m 3 + 20m 6 B. –3m 3 + 10m 2 C. –6m 7 + 20m 2 D. –3m 7 + 10m 6 Reset Selection

allsm [11]

( –6m^7 + 20m^6<span>) ÷ 2m^4 = ???

as you know

</span> –6m^7 + 20m^6 = 2m^4 (-3m^3 + 10m^2)

[2m^4 (-3m^3 + 10m^2) ] / 2m^4 (2m^4 is canceled out)

= -3m^3 + 10m^2

answer is B. –3m^3 + 10m^2

6 0

2 years ago

Read 2 more answers

Marcus bought he used 50% on tickets on rides and 1/4 of the tickets on video games and the rest of the tickets in the batting c

GalinKa [24]

Answer:

Therefore Marcus is incorrect.

Step-by-step explanation:

Total ticket that Marcus bought= 100%.

Marcus used 50% of ticket on rides.

and he used $\frac{1}{4}$ of the tickets on the video games.

The percentage form of any number x is

$=100\times x \%$

The percentage form of $\frac{1}{4}$ is

$=\frac{1\times 100}{4} \%$

=25%

Therefore rest tickets are

=Total ticket-( ticket used in rides + ticket used in video games)

=100% - (50%+25%)

=100% - 75%

=25%

Therefore he used 25% of tickets in batting cage.

But he said that Marcus said that he used 24% of ticket in batting cage.

Therefore Marcus is incorrect.

8 0

3 years ago

Una sustancia se encuentra en 15°c pero a partir de comienzo de un experimento su temperatura disminuye de manera uniforme a raz

bija089 [108]

Answer:

1= -15 °C

2= 7 minutos y medio

Step-by-step explanation:

1= colo la temperatura va bajando 2 grados cada minuto lo único que hay que hacer es restarle 30 °C a 15 y nos da -15 ° C

2= Solo divides 15 entre 2 y ya.

6 0

2 years ago

Which of the following words is defined as “the study of hearing”? audiology audiologist audiometer audio

elena55 [62]

Audiology 100% hope this helps :)

4 0

3 years ago