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gavmur [86]
3 years ago
9

What is the estimate of the sum of 125, 123, 392 and 294 using front end estimation?

Mathematics
2 answers:
kipiarov [429]3 years ago
7 0
Front end estimation for this question would be to the nearest hundred. So 125 rounded to the nearest hundred is 100, 123 to the nearest hundred is 100, 392 to the nearest hundred is 400, and 294 to the nearest hundred is 300. Adding 100 + 100 + 400 + 300 would be 900.
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Hope this helps!
Jobisdone [24]3 years ago
6 0
100+100+400+300=900
So your answer is 900. 
Just round each number to the nearest hundredth and add them up. 
For example, is 125 closest to 100 or 200. 100 would be the answer.
I hope this helps!
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Consider the vector add = a + b = [13 12 11 10 10] and sub = a - b = [-11 - 6 - 14 8]. Find the vector a and b.
prisoha [69]

Answer:

a = [1   3   5   7   9] and b = [12   9   6   3   1]

Step-by-step explanation:

The addition of two vectors a and b is defined as

a + b = [13   12   11   10   10]                .... (1)

The subtraction of two vectors a and b is defined as

a - b = [-11   - 6   - 1   4    8]                 .... (2)

After adding (1) and (2), we get

(a + b) + (a - b)= [13   12   11   10   10] + [-11   - 6   - 1   4    8]

On simplification we get

2a = [13-11   12-6   11-1   10+4   10+8]

2a = [2   6   10   14   18]

Divide both sides by 2.

a = [1   3   5   7   9]

Substitute the value of vector a in equation (1).

[1   3   5   7   9] + b = [13   12   11   10   10]

Subtract vector a from both sides.

b = [13   12   11   10   10] - [1   3   5   7   9]

On simplification we get

b = [13-1   12-3   11-5   10-7   10-9]

b = [12   9   6   3   1]

Therefore the vectors a and b are defined as a = [1   3   5   7   9] and b = [12   9   6   3   1].

4 0
3 years ago
Archimedes was asked by his king to figure out a way of telling if people were giving him fake gold objects. That was when Archi
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Answer:

See explanation below

Step-by-step explanation:

Archimedes was able o obtain the actual volume of the supposedly gold made object by collecting the water displaced by the object as it was sunk on a bowl filled with water to the rim. Then knowing the volume displaced and therefore the volume of the object, he could find the object's density (mass over volume). The mass he could get just by weighting the object. and compare that with the density of any other object made of real gold (like for example a coin) and see if the quotient was the same. The density of both objects should be the same if they are made of the same material.

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3 years ago
A store sells new video games for $55 each. Used video games sell for $12 each. Jacob is buying 3 new video games and x used vid
lapo4ka [179]

Answer:

D y=165x+12

Step-by-step explanation:

4 0
2 years ago
Read 2 more answers
4X + 5Y = 21<br> -4X + 8Y = -8<br> And<br> X + 5Y = 5<br> 3X - 5Y = 3
sergij07 [2.7K]

Answer:

for the first one

Step-by-step explanation:

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6 0
3 years ago
Suppose that you have 7 green cards and 5 yellow cards. The cards are well shuffled. You randomly draw two cards without replace
wlad13 [49]

Answer:

a. 7/22

b. 28/33

c. 7/22

d. dependent events

Step-by-step explanation:

The total number of cards is given as 7 + 5 = 12.

The probability if a card being green on the first pick, P(G) =  7/12

The probability of a card being yellow on the first pick, P(Y) = 5/12

Because there is no replacement, the card are going to be short by one card. Therefore, the second pick will be like this:

P(GG)  = ( 7/12×6/11)

P(GY) = ( 7/12 × 5/11)

P(YG) = ( 5/12×7/11)

P(RR) = ( 5/12 ×4/11)

a. P (G1 and G2) = ( 7/12×6/11)

                          = 7/22

b. P( At least one is green) = ( 7/12×6/11) +  ( 7/12 × 5/11) + ( 5/12×7/11)

                           = 28/33

c. P(G2G1)           = 7/22

d. the events are dependent. They do not give the same result.

6 0
3 years ago
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