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Natalka [10]
3 years ago
5

Help anyone please !!!

Mathematics
1 answer:
RSB [31]3 years ago
5 0
If you are learning about how to calculate the mean of something, than to estimate the height just find the mean, all the peaks added together, and divided by the amount of numbers (27 + 18 + 12 = 57 ... 57 divided by 3 = 19. Your mean is 19)
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Identify the values of P, r ,and n in the expression P(1 + r/n)^nt based on the verbal description of the Emma's situation. Then
finlep [7]

Answer:

300(1.0125)^12t

Step-by-step explanation:

P=300

R=0.15

N=12

substitute them into the equation P(1+r/n)^nt and then simplify the equation. The answer should be 300(1.0125)^12t

8 0
3 years ago
Solve the Inequality:<br> -0.5x &gt; 4
nydimaria [60]

Answer:

x < -8

Step-by-step explanation:

Step 1: Divide both sides by -0.5 and flip the inequality sign.

  • \frac{-0.5x}{-0.5} > \frac{4}{-0.5}
  • x < -8  

Therefore, the answer is x < -8.

3 0
3 years ago
The diagram shows a sector of a circle radius 10cm. Find the perimeter of the sector, giving your answer correct to 1 decimal pl
qwelly [4]
<h2>Explanation:</h2><h2></h2>

Hello! Remember you have to write complete questions in order to get good and exact answers. Anyway, I'll help you either way. A sector is a region of a circle between two radii. Let's assume the sector as:

s=25\pi cm^2

Then, we can find the central angle by the following equation:

s=\frac{\theta}{360}\times\pi r^{2} \\ \\ r=10cm \\ \\ s=25\pi cm^2 \\ \\ \\ So: \\ \\ \frac{25\pi(360)}{10^2\pi}=\theta \\ \\ \theta = 90^{\circ}

But:

90^{\circ}=\frac{\pi}{2}

Then:

C:Perimeter \ of \ sector \\ \\ \\ C=\theta r \\ \\ C=\frac{\pi}{2}(10) \\ \\ C=5\pi cm \approx \boxed{15.7cm}

6 0
4 years ago
Factorize fully 12x^3-4x^2
serg [7]

Answer:

4x² (3x - 1)

Step-by-step explanation:

→ Find the LCM of 12 and 4

LCM = 4

→ Find the LCM of x³ and x²

LCM = x²

→ Combine both LCM's together to form the outside multiplier

4x² (? - ?)

→ Complete the operations of 12x³ ÷ 4x² to find the first ? and 4x² ÷ 4x² to find the second ?

12x³ ÷ 4x² = 3x

4x² ÷ 4x² = 1

→ Therefore,

∴ 4x² (3x - 1)

4 0
3 years ago
Find the constant proportionality for the ratio 2/5
jonny [76]

The "constant of proportionality" is the value that relates the two amounts<span>Example: you are paid $20 an hour (continued)<span>The constant of proportionality is 20 because:</span></span><span><span>Earnings = 20 × Hours worked</span></span>

<span><span />This can be written:  y = kx</span>

<span><span>Where k is the constant of proportionality
</span></span>

6 0
3 years ago
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