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3 years ago

Why is it helpful to represent fractions and division with models?

Mathematics

1 answer:

solniwko [45]3 years ago

4 0

Answer:

R fraction visual models are incredibly effective for teaching fraction concepts. Conceptual understanding means knowing the meaning of a numerators and a denominators. As well as understanding what actually happens when we perform fraction operations.

Step-by-step explanation:

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Which equation has the same solution as x²- 6x - 12 = 0

marshall27 [118]

Hey There Baby and, Welcome to Brainly

Which equation has the same solution as x²- 6x - 12 = 0

 x^2 - 6x = 12 

x^2 -6x + 9 = 12+9 

x^2 -6x + 9 =21 

(x-3)^2 = 21

So the answer will be (x-3)^2=21

5 0

3 years ago

What is the value of arcsin(0) in degrees? Enter your answer in the box.

melisa1 [442]

Answer:

Therefore,

The value of arcsin(0) is 0° or 180° or 360° or 540° or n×180° so on.

Step-by-step explanation:

To Find:

arcsin(0) in degrees =?

Solution:

' arcsin ' a mathematical function that is the inverse of the sine function.

Therefore, arcsin (x) is called the inverse sine function.

It is the angle whose sine is the number x.

So here we require angle in degree for which the Sine is '0'.

It is also written as

$\sin^{-1}x$

We Know that

$\sin 0\°=0\\or\\\sin 180\°=0$

Therefore,

$\arcsin (0) = 0\°\\or\\\arcsin (0) = 180\°$

Also integer multiples of 180° will have

$\arcsin (0)=n\times 180\°$

Where n = integer

Therefore for '0' we can have 2×180° , 3×180° , 4×180°....and so on i.e 360° , 540° and so on

Therefore,

The value of arcsin(0) is 0° or 180° or 360° or 540° or n×180° so on.

5 0

3 years ago

A dentist is making identical dental care bags for patients using 56 tubes of toothpaste, 112 packets of floss, and 85 toothbrus

marin [14]

Answer : Greatest number of identical dental care bags the dentist can make with the least items leftover is 1.

Number of bags will be 2,4,3 respectively.

Explanation:

Number of tubes of toothpaste = 56

Number of packets of floss = 112

Number of toothbrushes = 85

So, Greatest number of identical dental care bags the dentist can make with the least amount of items leftover from toothbrush = H.C.F of 56,112, 85= 1 ( ∵ as they are coprime to each other )

Since there is no common factor among 56,112,85 but there is common factor between 56 and 112 i.e. 56 remaining bags from toothbrushes will be 85-56=29 .

So we consider 28 ,

Now, 56 can be written as 28×2

112 can be written as 28×4 and

84 can be written as 28× 3

So, there can be 28 bags in which all the three materials can be present and there is no leftover from toothpaste and floss but there is leftover from toothbrushes only as we consider 84 instead of 85 to get divisible by 28 so we get the common factor easily.

so, there will be 2 two bags for toothpastes and 4 bags for floss and 3 bags for toothbrushes.

8 0

3 years ago

The ratio of sixth graders to seventh graders at the school dance is 2 to 3.

Inessa [10]

Answer:

Step-by-step explanation:

2:3 x 9

18:27

18 + 27 = 45

6 0

3 years ago

Mercury is the closest planet to the sun at a distance of 36 million miles. The closest star to the sun is Proxima Centauri, whi

SpyIntel [72]

Answer:

2.36 * 10^13 miles

Step-by-step explanation:

Given that :

Proxima centauri is at a distance of 4.24 light years away from the sun.

Distance in miles of Proxima centauri from the sun ;

1 light year = 5.9 * 10^12 miles

Number of light years from the sun * 5.9 * 10^12

= 4 * (5.9 * 10^12)

= 23.6 * 10^12 miles

= 2.36 * 10^13 miles

3 0

3 years ago