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grin007 [14]
3 years ago
6

Need help with this difficult question come quick

Mathematics
1 answer:
Dovator [93]3 years ago
3 0

Answer:

Step-by-step explanation:

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(II) Time intervals measured with a stopwatch typically have an uncertainty of about 0.2 s, due to human reaction time at the st
Reil [10]

Answer:

(a) 36.36%

(b) 0.36%

(c) 0.06%

Step-by-step explanation:

Given that the time intervals measured with a stopwatch have an uncertainty of about 0.2 s.

We want to know what is the percent uncertainty of a hand-timed measurement of:

(a) 5.5 s

Percentage = (0.2/5.5) × 100

≈ 36.36%

(b) 55 s

Percentage = (0.2/55)×100

≈ 0.36%

(c) 5.5 min

5.5 min = 5.5 × 60 s

= 330 s

Percentage = (0.2/330)×100

≈ 0.06%

5 0
3 years ago
Just solve it for me no need to explain
riadik2000 [5.3K]

Answer: -5/21.

Step-by-step explanation:

\frac{2}{5}*[\frac{-3}{7} +(\frac{-1}{6})]=\frac{2}{5} *(-\frac{3}{7} -\frac{1}{6}) =\frac{2}{5}*(-\frac{3*6+1*7)}{7*6}  )=\frac{2}{5}*(-\frac{18+7}{42})=\frac{2}{5}*(-\frac{25}{42})=-\frac{5}{21} .

Good luck an' have a nice day!

8 0
2 years ago
Read 2 more answers
Evaluate each expression ​
choli [55]

Answer:

below

Step-by-step explanation:

  • c = 8 and  d = -3

c^{2} + d^{3} \\8^{2} + (-3)^{3} \\64 + (-27) \\64 - 27 \\37

  • r = -3  and   s = -4

( r -  s)^{3} + r^{2}\\(-3 -(-4))^{2} + (-3)^{2} \\(-3+4)^{3} + 9+ \\1^{3} + 9\\1 + 9 \\10

6 0
2 years ago
Michael invested 5,000 in an account that has a 5.5% annual interest rate. What equation best describes investment after T years
ivolga24 [154]

Answer:

V = 5000 +  275*T   for simple annual interest

or:   A = 5000 * (1.055)^T   for an annual compound interest

Step-by-step explanation:

I assume this is a simple interest rate.  If not I will give the one for compound interest.

V = 5000 + 5000* 0.055 * T      (Value of account after T years)

V = 5000 +  275*T   for simple annual interest

or:   A = 5000 * (1.055)^T   for an annual compound interest

5 0
3 years ago
How would you find if these two triangles are congruent?
nexus9112 [7]
Compare the small marks on the lines of the triangles, if you draw them both out next to each other, are they exactly the same? If so, they’re congruent
7 0
3 years ago
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