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densk [106]
4 years ago
10

Edward evaluates the expression 7.2 × 4.9 and gets an answer of 35.28. Is this a reasonable answer? Explain why.

Mathematics
2 answers:
san4es73 [151]4 years ago
8 0

Answer:

it is reasonable because 7.2 rounds up to 7 and 4.9 rounds up 5 its reasonable

Step-by-step explanation:

I had got it right on my test

Bad White [126]4 years ago
7 0
Yes that is correct
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If $\sqrt{5+n}=7$, then what is the value of $n$?
alina1380 [7]

Answer:

44

Step-by-step explanation:

We can solve the equation by simplifying it.

$\sqrt{5+n}=7$, let's square both sides.

5+n = 49. Now lets subtract 5 from both sides.

n = 44.

Hope this helped!

3 0
3 years ago
Read 2 more answers
Which expression shows the distance on the number line between −12 and 8?
makkiz [27]

Answer: The answer for this would be the rise over run. If you know what the rise over run expression is great. If not, here it is. The slope of a non-vertical line is the ratio of the amount it rises over some interval, over the length of that interval.

It is written like this rise/run.

Step-by-step explanation: Start from 8 and RISE (vertically) 4 places, the RUN (horizontally) and count until you get to -12. Then you take your numbers and divide.

7 0
4 years ago
E is the midpoint of Df, DE=2x+4, and EF=3x-1. Find all segment lengths
sertanlavr [38]
If E is the midpoint, DE and EF are equivalent.
2x+4=3x-1
4=x-1
5=x

Plug the value of x in
2(5)+4
14

3(5)-1
14

14+14=28

Final answer: DE=14, EF=14, DF= 28
6 0
4 years ago
While playing baseball, sofia takes note of the extreme vectors for which she bats. what is the angle between her two extreme ba
k0ka [10]

The angle between the two extreme vectors of Sofia bats is 74.60 degrees.

In this question,

The angle between two vectors will be deferred by a single point, which is called as the shortest angle at which we have to turn around one of the vectors to the position of co-directional with another vector.

The extreme vectors of Sofia bats are  \vec u = < -8, 12 > and \vec v = < -8, 12 >

The angle between the vectors is

\theta = cos^{-1} \frac{\vec u.\vec v}{||\vec u|| ||\vec v||}

The dot product is calculated as

\vec u. \vec v = (-8)(13)+(12)(15)

⇒ -104+180

⇒ 76

The magnitude can be calculated as

||\vec u|| = \sqrt{(-8 )^{2} +(12)^{2} }

⇒ \sqrt{64+144}

⇒ \sqrt{208}

||\vec v|| = \sqrt{(13 )^{2} +(15)^{2} }

⇒ \sqrt{169+225}

⇒ \sqrt{394}

Thus the angle between the vectors is

\theta = cos^{-1} \frac{76}{(\sqrt{208} )(\sqrt{394} )}

⇒ \theta = cos^{-1} \frac{76}{\sqrt{81952} }

⇒ \theta = cos^{-1} \frac{76}{286.27 }

⇒ \theta = cos^{-1} (0.2654)

⇒ \theta=74.60

Hence we can conclude that the angle between the two extreme vectors of Sofia bats is 74.60 degrees.

Learn more about angle between two vectors here

brainly.com/question/19726452

#SPJ4

5 0
2 years ago
What is 41/10 as a decimal
Juli2301 [7.4K]
41/10 as a decimal is 4.1 i think.
7 0
3 years ago
Read 2 more answers
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