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3 years ago

Please Help Me With This Math. It's 4th Grade Math!!!

Mathematics

2 answers:

Debora [2.8K]3 years ago

8 0

Answer:

1 1/2 hours

Other ways to show would be; = 1 1/2 hours = 1 .5 hrs = 90 minutes

Step-by-step explanation:

We write out the question 2 1/4 - 3/4 = ?

Then you use the model A below

Next you can add on from the smaller number 3/4 being step 1

And you use model B to find step 2 + step 3 as it reminds you that there is 1/4 in total time being the smallest box out of the sum.

step 1 = 3/4 + 1/4 = 1 = 1/4 is missing in A model box

step 2 = + 1 (to make 2) = 1 is left in B model box

step 3 is + 1/4 is left in B model box

Then add the up = 1/4 + 1 + 1/4 = 1 1/2

Your answers will be model represents 3hrs divided into 6 hours

Jessi played in the afternoon

Playedi n afternoon for 1 1/2 hours

jolli1 [7]3 years ago

5 0

Answer:

1 1/2 hours

Step-by-step explanation:

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timama [110]

Answer:

The volume of the irregular figure would be 144 $cm^3$ .

Step-by-step explanation:

If you wish to make the process of calculating the volume easier, you can picture the irregular figure as two rectangular prisms: the large one on the bottom, and the smaller one appearing to protrude from the prism below it. Using this method, you only need to find the volumes of the two rectangular prisms and add the values together to get the volume for the irregular figure. The formula used to find the volume of a rectangular prism is $l*w*h$ , where $l$ , $w$ , and $h$ , represents the length, width, and height of the rectangular prism respectively. Using the formula above, the volume of the larger rectangular prism would be 12 * 3 * 3 = 12 * 9 = 108 $cm^3$ , and the volume of the smaller rectangular prism would be 4 * 3 * 3 = 12 * 3 = 36 $cm^3$ . So the volume of the entire irregular figure would be 108 + 36 = 144 $cm^3$ .

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2 years ago

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