Answer: 229°
Step-by-step explanation:
Hi, to answer this question we have to multiply the radians by 180/π.
Since we have 4 radians, the expression is:
4 x (180/π) = 229.18 degrees
Rounding to the nearest degree:
229 degrees (because the first number after the point is less than 5 )
Feel free to ask for more if needed or if you did not understand something.
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In a given radioactive nuclide, we can easily find the mass number, mass of proton and neutron by subtracting the mass of proton from the mass number. The mass number, mass of proton and mass of neutron of the radioactive nuclide are 131, 56 and 75 respectively.
<h3>Properties of an atom</h3>
Data;
- Mass Number = 131
- Atomic Number = 56
In a given atom, the mass number of an atom comprises of the mass of proton and mass of neutron. The atomic number of the element or atom is equal to the mass of the proton.
In this case,
mass number = mass of proton + mass of neutron.

From the calculation above, the mass number, mass of proton and mass of neutron of the radioactive nuclide are 131, 56 and 75 respectively.
Learn more on mass of an element here;
brainly.com/question/496676
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Answer:
Answer is D
Step-by-step explanation:
10x+5y
10(6)+5(9)
60+45=
105
Answer:
the measure of all the angles within a triangle is = 180 degrees.
the two given angle measures are 70 and 90.
90+70= 160 making the remaining angle = 20 degrees
the two triangles are similar to each other, so they have the same angle measurements. making the measure of angle 1 = 20 degrees