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soldi70 [24.7K]
3 years ago
12

What is the solution for 7 +2x/5=13

Mathematics
1 answer:
o-na [289]3 years ago
3 0

Answer:

The correct answer is,

x =  \frac{65}{37}

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What is the repulsive force between two pith balls that are 13.0 cm apart and have equal charges of −24.0 nC?
daser333 [38]

Answer:

The repulsive force is 3.067\times10^{-4}N.

Step-by-step explanation:

Consider the provided information.

The coulomb's law to calculate the repulsive force: F=\frac{kQ_1Q_2}{r^2}

Where the value of k is 9.00×10⁹ Nm²/C²

Substitute the respective values in the above formula.

F=\frac{9\times10^9\frac{N\cdot m^2}{c^2} \times(-24\times10^{-9}C)^2}{[(13 cm)(\frac{1m}{100cm} )]^2}

F=\frac{9\times10^9\frac{N\cdot m^2}{c^2} \times(-24\times10^{-9}C)^2}{(0.13 m)^2}

F\approx0.0003067N

F=3.067\times10^{-4}N

Hence, the repulsive force is 3.067\times10^{-4}N.

8 0
3 years ago
Future scientists: Education professionals refer to science, technology, engineering, and mathematics as the STEM disciplines. A
nalin [4]

Answer:

The probability that the proportion of freshmen in the sample of 150 who plan to major in a STEM discipline is between 0.29 and 0.37 is 0.3855

Step-by-step explanation:

The probability that the proportion of freshmen in the sample of 150 who plan to major in a STEM discipline is between 0.29 and 0.37 can be calculated by finding <em>z-scores</em> and subtracting P(z<z(0.29)) from P(z<z(0.37))

z-score in the binomial distribution of 28% of freshmen entering college in a recent year planned to major in a STEM discipline can be calculated using the equation:

z=\frac{p(s)-p}{\sqrt{\frac{p*(1-p)}{N} } } where

  • p(s) is proportion of freshmen we are interested (0.37, 0.29)
  • p is the proportion found in recent year found by research group (28% or 0.28)
  • N is the sample size (150)

Then z(0.37)=z=\frac{0.37-0.28}{\sqrt{\frac{0.28*0.72}{150} } } ≈ 2.4550 and P(z<2.4550)=0.993

z(0.29)=z=\frac{0.29-0.28}{\sqrt{\frac{0.28*0.72}{150} } } ≈ 0.2728 and P(z<0.2728)=0.6075

Then P(z(0.29)<z<z(0.37))=0.993-0.6075=0.3855

4 0
3 years ago
If AB = 13 cm and BC = 12 cm, what is the length of AC?
SIZIF [17.4K]

Using the Pythagorean theorem:


AC = √(13^2 - 12^2)

AC = √(169 -144)

AC = √25

AC = 5 cm

6 0
4 years ago
Joseph, Pedro, Samuel, and David leave their backpacks by the classroom door at the start of class. When the fire alarm rings th
aev [14]

\huge\pink{Answer}

3/4 is the probability

3 0
3 years ago
The owner of a flower shop sells 18 roses for $90. What is the cost in dollars per rose
Lorico [155]
90/18=5. Hope this helps
3 0
4 years ago
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