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3 years ago

When multiplying whole numbers by fractions, why do we place the whole number over 1?

Mathematics

2 answers:

swat323 years ago

5 0

Answer:

yes

Step-by-step explanation:

because you can not just multiply without a 1 it will not work at all .

Svetlanka [38]3 years ago

4 0

So it can become a fraction and easier to multiple by

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Does anyone know how to answer this?

max2010maxim [7]

Given that
The length of the rectangle 4cm and the breadth is 3cm
Area of rectangle= length * breadth
Area= 4*3
= 12cm^2
Hope it helped

3 0

2 years ago

Read 2 more answers

A certain brand of dinnerware set comes in three colors: red, white, and blue. Twenty percent of customers order the red set, 45

denis23 [38]

Answer:

a) 0.20

b) 0.45

c) 0.65

d) Yes

e) Yes

f) Z = X + Y (except when X = 1 and Y = 1)

This is because the successes of X and Y are mutually exclusive events but their failures aren't. X and Y cannot both be 1.

Step-by-step explanation:

Probability of a red set = 20% = 0.20

Probability of a white set = 45% = 0.45

Probability of a blue set = 35% = 0.35

Probability of the single set being a red or white set = 20% + 45% = 65% = 0.65

P(X=1) = 0.20, P(X=0) = 1 - 0.2 = 0.80

P(Y=1) = 0.45, P(Y=0) = 1 - 0.45 = 0.55

P(Z=1) = 0.65, P(Z=0) = 1 - 0.65 = 0.35

a) pX = P(X=1) = 0.20

b) pY = P(Y=1) = 0.45

c) pZ = P(Z=1) = 0.65

d) Since only one order is being considered at a time, it isn't possible to order red & white set in a single set, hence, both X and Y cannot both be successes (equal to 1) at the same time. But they can both be failures (both equal to 0) if a blue set is ordered. The successes of X and Y are mutually exclusive events but their failures aren't

e) Is pZ = pX + pY

pX = 0.2, pY = 0.45, pZ = 0.65

Hence, this statement is correct!

f) Z = X + Y

Let's check all the probabilities

when X = 1 and Y = 1, Z = 1

1 ≠ 1 + 1

when X = 0 and Y = 1, Z = 1

1 = 0 + 1

when X = 1 and Y = 0, Z = 1

1 = 1 + 0

when X = 0 and Y = 0, Z = 0

0 = 0 + 0

Hence, Z = X + Y (except when X = 1 and Y = 1)

This is because the success of X and Y are mutually exclusive events but their failures aren't.

8 0

3 years ago

How can you be sure that 9.9 ÷ 1,000 = 0.0099?

Nastasia [14]

Answer:

When dividing by 1000, move the decimal point three places to the left (the last one)

Step-by-step explanation:

7 0

3 years ago

Read 2 more answers

A sports equipment store rents road bikes for $23 an hour.

kobusy [5.1K]

Answer:

$24,840

Step-by-step explanation:

Please mark brainliest.

6 0

3 years ago

As a part of their weather unit, Anoki’s science class took a hot air balloon ride. As they passed over a fenced field, the angl

yulyashka [42]

Please refer to the figure attached for the diagram of this problem.

Steps needed to find the width of the field (CD):

First, we should note that angle d would be equal to 27 degrees because there are two parallel lines that are cut by a transversal. Furthermore, angle a would be equal to 5 degrees since we just need to subtract 27 from 32.

We then subtract 27 and 5 from 180 to get angle c. $180-27-5=148$ . Angle c is therefore 148 degrees.

Next, we need to find angle e which is just the supplementary of angle c. Angle e therefore measures $180-148=32$ degrees.

For the next step we use sine law to find the length of segment AC:
$\frac{sin(32)}{800} = \frac{sin(90)}{AC}$
$AC=1509.66$

Lastly, we need to utilize the sine law again to find the length of segment CD or the width of the field:
$\frac{sin(27)}{1509.66} = \frac{sin(5)}{CD}$
$CD=290$

ANSWER: The width of the field is 290 ft.

7 0

3 years ago