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Travka [436]
3 years ago
12

Simplify the expression. -3(5g + 1) + 8g = Please answer fast! I got 2 minutes!

Mathematics
2 answers:
ehidna [41]3 years ago
8 0

Answer:

-7g - 3

Step-by-step explanation:

1.(0 -  3 • (5g + 1)) +  8g

Pull out like factors :

2.-7g - 3  =   -1 • (7g + 3)

and your answer is  -7g - 3

mrs_skeptik [129]3 years ago
4 0

Answer:

-1(7g + 3)

Step-by-step explanation:

-3(5g + 1) + 8g

opening the bracket

= -15g -3 + 8g

collect like terms

= -15g + 8g - 3

= -7g - 3

dividing each by -1

= -1(7g + 3)

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When p = 12, t = 2, and s = One-sixth, r = 18. If r varies directly with p and inversely with the product of s and t, what is th
bagirrra123 [75]

Answer:

k = \frac{1}{2}

Step-by-step explanation:

Given

p = 12

t = 2

s = \frac{1}{6}

r = 18

r\ \alpha\ p\ * \frac{1}{s * t}

Required

Find the constant of variation

From the question, the variation is as follows

r\ \alpha\ p\ * \frac{1}{s * t}

r\ \alpha\ \frac{p * 1}{s * t}

r\ \alpha\ \frac{p}{s * t}

Convert variation to equation

r\ = k\frac{p}{s * t}

Where k represents the constant of variation

Make k the subject of formula;

Multiply both sides by s * t

r * s * t = k\frac{p}{s * t} * s * t

r * s * t = kp

Divide both sides by p

\frac{r * s * t}{p} = \frac{kp}{p}

\frac{r * s * t}{p} = k

k = \frac{r * s * t}{p}

Substitute the values of p, r, s and t in the above equation

k = \frac{18 * \frac{1}{6} * 2}{12}

k = \frac{6}{12}

Divide numerator and denominator by 6

k = \frac{1}{2}

Hence, the constant of variation is; k = \frac{1}{2}

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MA_775_DIABLO [31]

Answer:

slope(m)=-3

Step-by-step explanation:

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