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barxatty [35]
3 years ago
8

Amit wants to estimate 1 1/9+ 3 6/7. To estimate, he simplifies the expression 1 + 4. Is Amit’s estimate a close estimate, an un

derestimate, or an overestimate? A. underestimate B. overestimate C. close estimate Question Resources
Mathematics
1 answer:
Gre4nikov [31]3 years ago
5 0

Answer:

B. Over estimate

Step-by-step explanation:

11/9 + 3-6/7 in comparison to 1+4=5

11/9 + 27/7 = 77/63 + 162/63 = 239/63 = 3.79

So 5-3.79=1.21 difference so it was an overestimate by 1.21

Had they chosen 4 we could have considered that a close guesstimate but 5 is too far over of an estimation

Hope this helps.

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Acellus
kkurt [141]

Answer:

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Step-by-step explanation:

8 0
3 years ago
A ball is kicked upward with an initial velocity of 32 feet per second. The ball's height, h (in feet), from the ground is model
stellarik [79]

Answer:

1.        t = 0.995 s

2.       h = 15.92  ft

Step-by-step explanation:

First we have to look at the following formula

Vf = Vo + gt

then we work it to clear what we want

Vo + gt = Vf

gt = Vf - Vo

t = (Vf-Vo)/g

Now we have to complete the formula with the real data

Vo = 32 ft/s      as the statement says

Vf = 0     because when it reaches its maximum point it will stop before starting to lower

g = -32,16 ft/s²        it is a known constant, that we use it with the negative sign because it is in the opposite direction to ours

t = (0 ft/s - 32 ft/s) / -32,16 ft/s²

we solve and ...

t = 0.995 s

Now we will implement this result in the following formula to get the height at that time

h = (Vo - Vf) *t /2

h = (32 ft/s - 0 ft/s) * 0.995 s / 2

h = 32 ft/s * 0.995 s/2

h = 31.84 ft / 2

h = 15.92  ft

4 0
3 years ago
Dominic is driving on a long road trip. He currently has 10 gallons of gas in his car. Each hour that he drives, his car uses up
zhuklara [117]

Answer:

in three hours he would have used up 3.75 gallons of gas. He would have 6.25 gallons of gas left in his tank after driving 3 hours.

Step-by-step e

5 0
3 years ago
Who could help me please:)))I'll apreciate the answers:))))
Wittaler [7]
The answer in order is    b   a     c 

6 0
4 years ago
I need help to evaluate the function for the given value of x for y=2×5x; x=2
mars1129 [50]

Answer:

y= 20

Step-by-step explanation:

y=2*5x

Let x =2

y = 2*5 (2)

y = 10*2

y= 20

8 0
3 years ago
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