All categories

3 years ago

What is the best estimate of the sum of the fractions?

Mathematics

1 answer:

hoa [83]3 years ago

8 0

Answer:

14 1/2

Step-by-step explanation:

Estimations only help us do some rough calculations. They don't give us correct answer but, again, they aren't supposed to.

When estimating sum of the fractions, we should estimate each fraction separately and then just add those estimations up.

For example, 31/4 is somewhere just below 8, but we'll estimate it to 8. Similarly, 17/3, is a bit less then 6, but close enough to be rounded up.

Finally, 8/18 is somewhere near 1/2, so we round it up to that value.

Now, we simply add up all these estimations:

8+6+1/2 = 14 1/2

You might be interested in

Joel wanted his mom to buy a super-sized box of his favorite cereal, but his mom didn't think it would fit in her cupboard. The

Lorico [155]

<h3><u>Given</u>:-</h3>

Volume 6,900 cm^3
Length = 23 cm
Width = 10cm

Height of box ??

<h3><u>Solution</u>:-</h3>

$\\\diamond{\underline{\underline{\sf {\;\; Calculating\; Height\; of \; box :-}}}}\\$

$\\ \pink \star \: \: {\underline{\boxed {\bf{ Volume_{ \red{ \{Rectangle \}}} \: = l \times w \times h }}} }\; \red\bigstar \\$

Where,

» l denotes Length
» w denotes Width
» h denotes Height

$\\ \sf \implies \: {Volume_{ \red{ \{Rectangle \}}} \: = l \times w \times h} \\$

$\\ \sf \implies \: { 6,900 \: = \: 23 \: \times \: 10 \: \times h} \\$

$\\ \sf \implies \: { 6,900 \: = \: 230 \: \times \: h} \\$

$\\ \sf \implies \: { \: h \: = \: \frac{6900}{230} \: } \\$

$\\ \sf \implies \: { \: h \: = \: 30 \: {cm }^{3} \: } \\$

$\\ \implies{\underline{\boxed{\frak { Height = 30 \: cm^3 }}}} \; \purple\bigstar \: \\$

$\\\qquad \rule{120pt}{3pt}\\$

Therefore , the Volume of the Box is 30 cm ³.

5 0

2 years ago

Sam sees this newspaper headline.

Law Incorporation [45]

Ok for the last time stop cheating and the answer is b

7 0

3 years ago

Read 2 more answers

(ii) The value V of a Porsche 718 Cayman that is tyears old can be modeled by

Elena L [17]

Answer:

Part A: What would be worth the car's worth in 2 years?

Part B. In how many years will the car be worth $325,000?

<u>t = 7.2 years (rounding to the next tenth) or approximately 7 years, 2 months and 12 days</u>

Step-by-step explanation:

Part A: What would be worth the car's worth in 2 years?

If V(t) = 420,000(0.965) ^t, therefore:

V(2) = 420,000(0.965)²

V(2) = 420,000 * 0.931225

Part B. In how many years will the car be worth $325,000?

If V(t) = 420,000(0.965) ^t, therefore:

325,000 = 420,000(0.965) ^t

325,000/420,000 = (0.965) ^t

0.7738 = 0.965^t

t = log 0.965(0.7738)

t = log 0.7738/log 0.965

t = 7.2 years (rounding to the next tenth) or approximately 7 years, 2 months and 12 days

0.2 years = 0.2 * 12 = 2.4 months

4 0

3 years ago

How would the number 6,870,000,000,000,000 appear in scientific notation on a calculator screen using e?

bazaltina [42]

It would appear as 6.87E13 or 6.87*10^13

7 0

3 years ago

Read 2 more answers

Suppose an airplane traveling in a circle at 138 m/s can turn in a circle with as much as 69.6 m/s of centripetal acceleration.H

Oksanka [162]

Answer: A. 9567m

i hope i'm correct let me know if i'm wrong

6 0

3 years ago