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Vlad [161]
2 years ago
11

86-[(4-9)².3] simplify

Mathematics
2 answers:
Sonja [21]2 years ago
4 0

Answer: 218

Step-by-step explanation:

Leokris [45]2 years ago
4 0

Answer:

11

Step-by-step explanation:

86-[(4-9)². 3] Subtract 9 from 4 to get -5

86-(-5)² ×3 Calculate -5 to the power 2 get 25

86-25×3. Multiply 25 and 3 to get 75

86-75. Subtract 75 from 86

= 11

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Please someone help, I know its kind of a lot, but I need these answers fast pls.
Dmitry_Shevchenko [17]

Answer:

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Step-by-step explanation:

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5 0
3 years ago
Four resistors are connected in series such that their total resistance is 50ohm . If the resistance of resistors is 5 ohm , 10o
Katyanochek1 [597]
<h2>Answer:</h2>

\boxed{R_{4}=20\Omega}

<h2>Step-by-step explanation:</h2>

If resistors are in series, so the current  I is the same in all of them. In this problem we have four resistors. So, we can get a relationship between the Equivalent resistance  of series combination and the four resistors as follows:

R_{eq}=R_{1}+R_{2}+R_{3}+R_{4}

R_{eq} is the total resistance 50\Omega. Moreover:

R_{1}=5\Omega \\ R_{2}=10\Omega \\ R_{3}=15\Omega

Therefore:

50=5+10+15+R_{4} \\ \\ R_{4}=50-(5+10+15) \\ \\ R_{4}=50-30 \\ \\ \boxed{R_{4}=20\Omega}

7 0
3 years ago
. The psychology club is having a self-proclaimed psychic come to their campus fund-raising event to demonstrate his abilities.
ElenaW [278]

Answer:

the club looses 12.50$

Step-by-step explanation:

125 tickets * 1.50$ per ticket

125 * 1.50 = 187.5 earned

200$ fee for psychic - 187.5$ earned

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3 0
3 years ago
a bag contains 4 red, 3 orange and 5 purple marbles. what is the probability of drawing 2 purple marbles in a row without replac
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Step-by-step explanation: this one is for zack!!!!!!!!!

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3 years ago
Read 2 more answers
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.

so

Cone volume:  C = (1/3)*(πr^2) * h

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

r = 3 mm  and  h = 5mm

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

V = (1/2)* (4/3) * (π * 3^3) = 18 π cubic mm

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

3 0
3 years ago
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