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2 years ago

HELP ME I NEED HELP!!!

Mathematics

1 answer:

docker41 [41]2 years ago

5 0

Answer: B

Step-by-step explanation:

4.2 / 0.25 = 21

0.4 · 21 = 8.4

8.4 + 2.5 = 10.9

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70 p x 2 1/2 = how many pounds

Setler79 [48]

70 x 2 = 140, so 1 pound 40p. Adding 35p (half of 70p) equals 175p. This is £1.75p.

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2 years ago

Convert 0.45 (5 is a repeating number) to a fraction

Jobisdone [24]

Let the given number be 'x',

$\begin{gathered} x=0.4\bar{5} \\ x=0.45555555\ldots\ldots \end{gathered}$

Multiply both sides by 10,

$\begin{gathered} 10x=4.\bar{5} \\ 10x=4.5555555\ldots\ldots \end{gathered}$

Subtract the equations,

$\begin{gathered} 10x-x=4.5555\ldots-0.45555\ldots \\ 9x=4.5+0.0\bar{5}-(0.4+0.0\bar{5}) \\ 9x=4.5+0.0\bar{5}-0.4-0.0\bar{5} \\ 9x=4.1 \\ 9x=\frac{41}{10} \\ x=\frac{41}{90} \end{gathered}$

Thus, the recurring decimal number is equivalent to the fraction,

$0.4\bar{5}=\frac{41}{90}$

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11 months ago

Complete the sentence by selecting the correct word from each drop-down menu. A measure of ______ summarizes all of the values i

AleksAgata [21]

<span>variation and large

hope this help!!! <3</span>

8 0

2 years ago

For what values of theta (0 less than or equal to theta less than or equal to 2pi) do maximum r values occur on the graph the po

9966 [12]

Answer:

Step-by-step explanation:

To find the values of the angle which makes maximum r you use the derivative of r

$\frac{dr}{d\theta}=\frac{1}{3}sin(3\theta)$

If you equals this derivative to zero you obtain the value of the angle:

$\frac{dr}{d\theta}=0\\\\cos3\theta=0\\\\3\theta=\frac{\pi}{2}\\\\\theta=\frac{\pi}{6}$

However, the values of 5π/6 and 9π/6 are also available, because makes the sinusoidal function equal to 1.

hence, the answer is:

$\theta_1=\frac{\pi}{6} \\\\\theta_2=\frac{5\pi}{6}\\\\\theta_3=\frac{9\pi}{6}=\frac{3\pi}{2}$

answer b

7 0

3 years ago

Simplify and evaluate. 4−2

Nikitich [7]

4-2 = 2-1
You can do the evaluating part.

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3 years ago