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Zanzabum
3 years ago
7

2• 1 1/2 please help

Mathematics
2 answers:
Reika [66]3 years ago
8 0

Answer :-

2.11/2 =1.055,,

igor_vitrenko [27]3 years ago
6 0

Answer:

3

Step-by-step explanation:

Method 1:

First, we can convert 1 1/2 to 3/2.

So 2 • 1 1/2 becomes  2 • 3/2.

The 2s cancel, so the answer is 3.

Method 2:

Since 1 1/2 is just 1+1/2, the problem becomes

2(1+1/2)

Expanding, we have

2+2(1/2)

or

2+1.

Since 2+1 is 3, the answer is 3.

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John is making 3 1/2 batches of cookies. Each batch takes 2 1/4 cups of flour. How much flour will John need for the cookies?
Ivahew [28]

Answer: 7 7/8 cups of flour

Step-by-step explanation:

Since John is making 3 1/2 batches of cookies and each batch takes 2 1/4 cups of flour.

The amount of flours that John will need for the cookies will be gotten by multiply the batches of cookies made by the number of flours of cups used per batch and this will be:

= 3 1/2 × 2 1/4

= 7/2 × 9/4

= 63/8

= 7 7/8 cups of flour

7 0
3 years ago
Find the number that makes the ration equivalent to 77:99
Leno4ka [110]
Each are divisible by 11 so the ratio equivalent would be 7:9
7 0
3 years ago
Could someone please help me with this thank you very much
elena-s [515]

Answer:

Answer for #10:

y = 2 \: and \: x = 1

Answer for #1:

x = 2 \: and \: y =  - 1

Step-by-step explanation:

In order to solve a simultaneous equation using the substitution method you have to:

Use one of the equation and substitute it into the other equation, in this case equation <em>B</em><em> </em>was substituted into equation <em>A</em><em>.</em>

<em>equ. \: a = (2x - 3y = 7) \\ equ. \: b = (x = 1 - y)</em>

Therefore since x = 1 - y, equation A would be:

2(1 - y) - 3y = 7 \\ (2 - 2y) - 3y = 7 \\  - 2y - 3y = 7 - 2 \\  - 5y = 5 \\ y =  - 1 \: and \: x = 2

8 0
2 years ago
Consider the polar curve r = 4sin(2θ). What is the length of each petal, and how many petals does the graph have? a The length o
VashaNatasha [74]

Answer:

d The length of each petal is 4, and the number of petals is 4.

Step-by-step explanation:

3 0
2 years ago
The heights (in cm) and arm spans (in cm) of 31 students were measured. The association between x(height) and y(arm span) is sho
abruzzese [7]

Answer:

27.385 cm longer would we expect Mike's arm span to be than George's.

Step-by-step explanation:

We have to find how many centimeters longer would we expect Mike's arm span to be than George's using the equation:

y= 4.5x + 0.977 x

where y= arm span

and x= height

Given:

Mike's height=x = 175 cm

so Mike's arm span= y= 4.5 x + 0.977 x

                                    = 4.5* (175) + 0.977* (175)

                                    = 787.5 + 170.975

                                    = 958.475 cm

George's height = x = 170 cm

so George's arm span= y= 4.5 x + 0.977 x

                                    = 4.5* (170) + 0.977* (170)

                                    = 765 + 166.09

                                    = 931.09 cm

Mike's arm span longer than George's = Mike's arm span - George's arm span

                                                                 = 958.475 - 931.09

                                                                 = 27.385 cm.

8 0
3 years ago
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