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3 years ago

How do u solve -18-6k=6 (1+3k)

2 answers:

5 0

Let's solve your equation step-by-step.−18−6k=6(1+3k)

Step 1: Simplify both sides of the equation.
−18−6k=6(1+3k)
Simplify: (Show steps)−6k−18=18k+6

Step 2: Subtract 18k from both sides.−6k−18−18k=18k+6−18k−24k−18=6

Step 3: Add 18 to both sides.−24k−18+18=6+18−24k=24

Step 4: Divide both sides by -24.−24k−24=24−24k=−1

Answer:k=−1

iVinArrow [24]3 years ago

3 0

We can to ANYTHING to an equation as long as you do it to both sides

we can undistribuet a 6 on left
6(-3-k)=6(1+3k)
divide both sides by 6
-3-k=1+3k
add k both sides
-3=1+4k
minus 1 both sides
-4=4k
divide by 4
-1=k

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Can someone please help meee

34kurt

Answer:

90 degrees

Step-by-step explanation:

If two angles are supplementary they are a linear pair which means they form a straight line, and if you know a straight line equals 180 degrees which is the total degrees of a triangle.

Now if you have two supplementary angles and they are congruent that means not only are they right angles but its half of 180 so you divide these pair of 2 by 180 giving you your total of 90 degrees.

Have a nice rest of your day !

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2 years ago

The cost to rent an instrument is $05 for the first month. It costs $30 for each additional

mihalych1998 [28]

Answer:

total cost, or c = number of months rented after first month, or x, times $30 + $5

c=30x+5

Step-by-step explanation:

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3 years ago

According to a certain website, wine critics generally use a wine-scoring scale to communicate their opinions on the relative qu

const2013 [10]

Answer:

$\bar x = 82$

$\sigma = 9.64$

Step-by-step explanation:

Given

$n = 12$

$87\ 91\ 86\ 82\ 72\ 91\ 60\ 77\ 80\ 79\ 83\ 96$

Solving (a); Point estimate of mean

To do this, we simply calculate the sample mean

$\bar x = \frac{\sum x}{n}$

$\bar x = \frac{87+ 91+ 86+ 82+72+91+60+77+80+79+83+96}{12}$

$\bar x = \frac{984}{12}$

$\bar x = 82$

Solving (b); Point estimate of standard deviation

To do this, we simply calculate the sample standard deviation

$\sigma = \sqrt{\frac{\sum(x-\bar x)^2}{n - 1}$

$\sigma = \sqrt\frac{(87-82)^2+ (91-82)^2+ ....+ (79-82)^2+ (83-82)^2+ (96-82)^2}{12-1}$

$\sigma = \sqrt\frac{1022}{11}$

$\sigma = \sqrt{92.91}$

$\sigma = 9.64$

Note that: The sample mean and the sample standard deviation are the best point estimators for the mean and the standard deviation, respectively.

Hence, the need to solve for sample mean and sample standard deviation

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3 years ago

A rectangular pyramid has a volume of 160 cubic feet. Find two possible sets of measurements for the base area and height of the

muminat

$\bf \textit{volume of a pyramid}\\\\ V=\cfrac{1}{3}Bh~~ \begin{cases} B=area~of\\ \qquad its~base\\ h=height\\ \cline{1-1} V=160 \end{cases}\implies 160=\cfrac{Bh}{3}\implies 480=Bh \\\\[-0.35em] ~\dotfill\\\\ \begin{cases} 480=&2\cdot 2\cdot 2\cdot 2\cdot 2\cdot 3\cdot 5\\ &8\cdot 60\\ &32\cdot 15 \end{cases}~\hspace{5em}\stackrel{B}{8}\times\stackrel{h}{60}\qquad \qquad \stackrel{B}{32}\times\stackrel{h}{15}$