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MissTica
3 years ago
6

What is the sum? 16x^3+9x^3

Mathematics
1 answer:
Ipatiy [6.2K]3 years ago
6 0
Your answer is 25x^3
just add the real numbers and the powers stay the same :)
hope this helped if it did please give a brainlest and say thank you . 
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(b) Find the angle between u and v to the nearest degree.
yulyashka [42]

<u>Question 1 (b)</u>

<u />u \cdot v=11\\\\|u|=\sqrt{3^{2}+(-1)^{2}}=\sqrt{10}\\\\|v|=\sqrt{4^{2}+1^{2}}=\sqrt{17}

So,

\cos \theta=\frac{11}{\sqrt{10}\sqrt{17}}\\\\\theta=\cos^{-1} \left(\frac{11}{\sqrt{10}\sqrt{17}} \right) \approx \boxed{32^{\circ}}

<u>Question 2 (b)</u>

<u />u \cdot v=22\\\\|u|=\sqrt{5^{2}+2^{2}}=\sqrt{29}\\\\|v|=\sqrt{4^{2}+1^{2}}=\sqrt{17}

So,

\cos \theta=\frac{22}{\sqrt{29}\sqrt{17}}\\\\\theta=\cos^{-1} \left(\frac{22}{\sqrt{29}\sqrt{17}} \right) \approx \boxed{8^{\circ}}

6 0
2 years ago
6. If element Q has 11 protons, its atomic<br> is 11.
Vladimir79 [104]

Answer: If element Q has 11 protons, its atomic  <u>number</u> is 11.

Step-by-step explanation:

The atomic number of a chemical element is the total number of protons that each atom of that element has.

In other words: it indicates the amount of protons that is present in the nucleus of an atom.

In this sense, the periodic table of the elements arranges the chemical elements in the form of a table, ordered by their atomic number (number of protons), by their configuration of electrons and their chemical properties.

5 0
3 years ago
Read 2 more answers
Find the general solution, y(t), which solves the problem below, by the method of integrating factors.
Sonbull [250]

The general solution, y(t), which solves the problem by the method of integrating factors is; y = ¹/₂₁t⁴ + (1/t)c₁t^(⁴/₅)

<h3>How to solve differential equations?</h3>

We want to find the general solution of;

5t(dy/dt) + y = t⁴

We will divide through by 5t to get;

(dy/dt) + y/5t = t³/6

Using Integration factor, we have;

u(t) = e^∫(¹/₅t) dt = t^(¹/₅)

Thus, we now have;

[t^(¹/₅)](dy/dt) +  [t^(¹/₅)]y/5t = [t^(¹/₅)]t³/6

Completing this with a differential calculator gives us the general solution as;

y = ¹/₂₁t⁴ + (1/t)c₁t^(⁴/₅)

Read more about differential equations at; brainly.com/question/17201048

#SPJ1

7 0
3 years ago
Can someone plz help me witt this??
ivann1987 [24]

Answer:

23

Step-by-step explanation:

sythenic division hard asab

4 0
3 years ago
135% of what number is 108?
Allisa [31]

Answer:

N = 80

Step-by-step explanation:

of means multiply and is means equals

135% * N = 108

Change to decimal form

1.35 * N = 108

Divide each side by 1.35

1.35 * N/ 1.35 = 108/1.35

N = 80

3 0
3 years ago
Read 2 more answers
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