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nadya68 [22]
3 years ago
8

assume you are given the following measurements. 12 cm, 143 m , 398 km, 778 mm evaluate the sum of these measurements to the cor

rect number of significant digits.
Mathematics
1 answer:
Sati [7]3 years ago
4 0
Well it all depends what measurement your answer has to be in.

Answer in cm-
12cm stays the same
143m becomes 14,300cm
398km becomes 39,800,000cm
778mm becomes 77.8cm
Then you add them together
12+14,300+39,800,000+77.8=39,814,398.8
The answer stays the same cause it already has the right amount of sig figs so it's 39,814,398.8cm

Answer in m-
12cm becomes 0.12m
143m stays the same
398km becomes 398,000m
778mm becomes 0.778m
Then you add them together
0.12+143+398,000+0.778=398,143.898
But then you have to round to the right amount of sig figs which would be to have two numbers after the decimal point so the answer would then be 398,143.90m

Answer in km-
12cm becomes 0.00012km
143m becomes 0.143km
398km stays the same
778mm becomes 0.000778
Then you add them together
0.00012+0.143+398+0.000778=398.143898km
But then you have to round to the right amount of sig figs which would be to have three numbers after the decimal point so the answer would then be 398.144km

Answer in mm-
12cm becomes 120mm
143m becomes 143,000mm
398km becomes 398,000,000mm
778mm stays the same
Then you add them together
120+143,000+398,000,000+778=398,143,898
The answer stays the same cause it already has the right amount of sig figs so it's 398,143,898mm
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Simplify.<br> (WILL GIVE BRAINLIEST)
Novosadov [1.4K]

Answer:

\frac{\sqrt{x} }{2x}

Step-by-step explanation:

Rationalize the denominator first (keep in mind we are NOT solving this because there is no equals sign here.  We are merely simplifying.)

\frac{\sqrt{5x} }{x\sqrt{20} } *\frac{\sqrt{20} }{\sqrt{20} } =\frac{\sqrt{100x} }{20x}

Now simplify by taking the square root of 100 to get:

\frac{10\sqrt{x} }{20x}

Divide numerator and denomiator by 10 to get:

\frac{\sqrt{x} }{2x}

4 0
3 years ago
Based on the diagram shown, find θ to the nearest degree.
sattari [20]

Answer:

  θ = 38°

Step-by-step explanation:

The lower right triangle is congruent to the upper left triangle, so we have θ and 20° being the two acute angles in the triangle. The law of sines tells you ...

  sin(θ)/9 = sin(20°)/5

  sin(θ) = (9/5)sin(20°)

  θ = arcsin(9/5·sin(20°)) ≈ 38°

___

Another solution to the triangle is θ = 180° -38° = 142°. The diagram clearly shows θ as an acute angle, so we take this second solution to be extraneous.

8 0
3 years ago
The table shows the number of championships won by the baseball and softball leagues of three youth baseball divisions organized
castortr0y [4]

Answer:


Step-by-step explanation:

heyq


The correct answer is:


7/10


Explanation:


Finding the totals of each column and row, we find:


There are 3+2+1 = 6 children in the baseball league.

There are 7+2+1 = 10 children in the softball league.

There are 3+7 = 10 children in the 7-9 division.

There are 2+2 = 4 children in the 10-12 division.

There are 1+1 = 2 children in the 13-15 division.

There are a total of 10+6 = 16 children.


We start with the information that the team is a member of the softball league.  There are 10 children in this league; this is the denominator of the probability.


There are 7 children in the 7-9 division that are in the softball league.  This gives us the probability 7/10.

please you are a student study well especially graph is easy thing to do.


4 0
3 years ago
Find the value of x. Round to the nearest tenth. Help please!!!
jasenka [17]

Answer:

x=3

Step-by-step explanation:

Right triangle so you can use pythagorean theorem

a squared + b squared = c squared

b=x

14^2 + b^2= 17^2

14+b=17

b=3

8 0
2 years ago
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Artemon [7]
The anwser I got is 2.78?
8 0
3 years ago
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