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3 years ago

8

Why is estimation useful when finding actual products and solving real-world problems?

2 answers:

Molodets [167]3 years ago

7 0

It's Cause We Study Real-World-Problems Without Education We wouldn't learn anything so its good to study independently so our brains can grow!

suter [353]3 years ago

7 0

Estimation is useful to quickly compute a value without needing a calculator. This way you can get a sense of scale of a project. Of course, when it comes time to doing the actual project, you should compute more accurate values to avoid rounding error.

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For example:

2.3*5.7 estimates to 2*5 = 10

The actual value is 2.3*5.7 = 13.11; we see the estimate 10 is an underestimate. The estimate isn't too far off, so we get a sense of the size/scale of this product.

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Factorise -75ab² - 15ac

krok68 [10]

Answer:

9) 51 × 10⁻⁵ = 0.00051

10) Cash price = #54,000 × (1 - 0.125) = #47,250

11) -40·p·q÷(-2)² = -10·p·q

12) 0.003 × 0.045 = 1.35 × 10⁻⁴

13) N40°W = 320°

14) The base diameter of the cylinder = √(4 × (700×π cm³/7)/π) = 20 cm

15) The LCM of 2·x²·y, 3·x·y² is 12·x²·y²

16) 636,000 = 6.36 × 10⁵

17) 1/3·π·r²·h₁ = π·r²·h₂

h₂/h₁ = 1/3·π·r²/( π·r²) = 1/3

h₂/12 = 1/3

h₂ = 12/3 = 4 cm, the height of the cylinder = 4 cm

18) The angle = 180 + 45 = 225°

19) The total surface area = 22/7×14²/4 + 22/7 ×14 × 20 = 1034 cm²

20) The number is 58/2 = 29.

Step-by-step explanation:

3 0

3 years ago

Read 2 more answers

Tom has a recipe for punch that calls for 1/2 gallon of fruit drink, how much fruit drink will tom need to make 5/2 batches of t

Hunter-Best [27]

Answer:

Tom will need $\dfrac{5}{4}$ gallons of fruit drink.

Step-by-step explanation:

Hint- This question can be solved by unitary method.

Tom has a recipe for punch that calls for $\dfrac{1}{2}$ gallon of fruit drink.

i.e for 1 batch of the punch Tom needs $\dfrac{1}{2}$ gallon of fruit drink.

For $\dfrac{5}{2}$ batch of the punch Tom needs $\dfrac{1}{2}\times \dfrac{5}{2}=\dfrac{5}{4}$ gallons of fruit drink.

Therefore, Tom will need $\dfrac{5}{4}$ gallons of fruit drink.

4 0

3 years ago

I need help with all of these questions please?

damaskus [11]

What do you need help with? it helps us to know the question!

6 0

3 years ago

How many kilograms is a rice packet that weighs 750 g?<br> (Please answer quick!)

RideAnS [48]

Answer:

0.750 kg

Step-by-step explanation:

Hi there ,

As you know 1 kg = 1000g

So when we convert g to kg then we divide the given value of grams by 1000.

So in this case we have 750 grams, changing it we have :

$\frac{750}{1000}$

Since there are 3 zeroes in 1000 we move the decimal point by 3 places to the left leaving the answer as : 0.750 kg or $\frac{750}{1000}$ kg

Please mark me as brainliest if you found the above answer helpful

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2 years ago

Which property justifies

algol [13]

B - commutative.......

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3 years ago