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ladessa [460]
3 years ago
12

What is −8 − 5n = 64 + 3n ?

Mathematics
2 answers:
astraxan [27]3 years ago
8 0
−8 − 5n = 64 + 3n
(combine like terms)
−8+8 − 5n-3n = 8+64 + 3n-3n
-8n=72
Divide
n=-9
emmasim [6.3K]3 years ago
4 0

Answer:

n=-9

Step-by-step explanation:

Solution for -8-5n=64+3n equation: Simplifying -8 + -5n = 64 + 3n Solving -8 + -5n = 64 + 3n Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '-3n' to each side of the equation. -8 + -5n + -3n = 64 + 3n + -3n Combine like terms: -5n + -3n = -8n -8 + -8n = 64 + 3n + -3n Combine like terms: 3n + -3n = 0 -8 + -8n = 64 + 0 -8 + -8n = 64 Add '8' to each side of the equation. -8 + 8 + -8n = 64 + 8 Combine like terms: -8 + 8 = 0 0 + -8n = 64 + 8

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3 years ago
A 5'6" person walking down the street notices his shadow. If the angle of elevation from the tip of the shadow to the sun is 60°
madreJ [45]

Answer:

The length of the shadow is 3.17 feet .

Step-by-step explanation:

Given as :

The height of the person walking on street = H = 5'6''

∴ 12" = 1 '

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I.e H = 5.5 feet

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Let The length of the shadow = X feet

<u>Now, From figure</u>'

Tan angle = \dfrac{\textrm perpendicular}{\textrm base}

Or, Tan Ф = \dfrac{\textrm AB}{\textrm AO}

Or, Tan 60° =  \dfrac{\textrm H}{\textrm X}

Or, Tan 60° =  \dfrac{\textrm 5.5 feet}{\textrm X}

Or, 1.732 = \dfrac{\textrm 5.5 feet}{\textrm X}

Or, X = \dfrac{\textrm 5.5 feet}{\textrm 1.732}

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3 0
4 years ago
8/k = -12/30 solve the proportion
Tju [1.3M]

Answer:

k=-20

Step-by-step explanation:

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Alenkinab [10]

Answer:

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Step-by-step explanation:

9−4d≥−3

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