2 years ago

Q: Solve by the Extraction of Roots method: - -5x²=-50

Mathematics

1 answer:

My name is Ann [436]2 years ago

7 0

Answer:

$x = \sqrt{10}$

Step-by-step explanation:

$- 5 {x}^{2} = - 50 \\ {x}^{2} = \frac{ - 50}{ - 5} \\ {x}^{2} = 10 \\ x = \sqrt{10}$

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Answer:

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Step-by-step explanation:

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3 years ago

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3 years ago

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20 POINTS / WILL GIVE BRAINLIEST

padilas [110]

Answer: Total Volume = 15π + 18 π= 33π cubic mm

Step-by-step explanation:

What is the volume of the composite figure? Leave the answer in terms of π.

_33π mm3

We have a cone here conjoined to a semi-sphere.

Cone volume: C = (1/3)*(πr^2) * h

semi-sphere volume : V = (1/2)* (4/3) * (π * r^3)

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so C = (1/3)*(π (3)^2) * 5 = 15π cubic mm

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Total Volume = 15π + 18 π= 33π cubic mm

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3 years ago

Y varies inversely with x, y = 4 and x = 3, what is y, when x = 2B) given: y = 2x - 1 (x-3)(x+1) what is the I. VAII. HA III. X-

Semmy [17]

SOLUTION

(a)

$\begin{gathered} y\alpha\frac{1}{x} \\ \\ y=\frac{k}{x} \\ \\ 4=\frac{k}{3} \\ \\ k=12 \end{gathered}$ $\begin{gathered} y=\frac{12}{x} \\ \\ when\text{ x=2} \\ \\ y=\frac{12}{2} \\ \\ y=6 \end{gathered}$

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1 year ago