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3 years ago

Find the value of x in each of the following a) x/3-2 = 6 b) x/5+ 1 = 5

Mathematics

2 answers:

AnnyKZ [126]3 years ago

6 0

X/3 -2 = 6

Add 2 to both sides:

X/3 = 8

Multiply both sides by 3:

X = 24

X/5 +1 = 5

Subtract 1 from both sides:

X/5 = 4

Multiply both sides by 5:

X = 20

ss7ja [257]3 years ago

5 0

Answer:

a) 24.

b) 20.

Step-by-step explanation:

a) x/3 - 2 = 6

x/3 = 6 + 2 = 8

x = 3*8

x = 24.

b). x/5 + 1 = 5

x/5 = 5 - 1 = 4

x = 5*4

x = 20.

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−15x + 60 ≤ 105 AND 14x + 11 ≤ −31

almond37 [142]

Answer:

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Step-by-step explanation:
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3 years ago

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The miles-per-gallon rating of passenger cars is a normally distributed random variable with a mean of 33.8 mpg and a standard d

EleoNora [17]

Answer:

The probability that a randomly selected passenger car gets more than 37.3 mpg is 0.1587.

Step-by-step explanation:

Let the random variable <em>X</em> represent the miles-per-gallon rating of passenger cars.

It is provided that $X\sim N(\mu=33.8,\ \sigma^{2}=3.5^{2})$ .

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$P(X>37.3)=P(\frac{X-\mu}{\sigma}>\frac{37.3-33.8}{3.5})$

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Thus, the probability that a randomly selected passenger car gets more than 37.3 mpg is 0.1587.

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3 years ago

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ANEK [815]

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3 years ago

Write an equation of a circle whose center is (-5,4) and whose diameter is 12

musickatia [10]

Answer:

(x + 5)² + (y - 4)² = 36

Step-by-step explanation:

The equation of a circle in standard form id

(x - h)² + (y - k)² = r²

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Here (h, k) = (- 5, 4) and r = 12 ÷ 2 = 6 , thus

(x - (- 5))² + (y - 4)² = 6², that is

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3 years ago

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antoniya [11.8K]

B. 28
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3 years ago