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3 years ago

Equation which i dont like math not no brainly my question 3 (k-12)=k-30

Mathematics

2 answers:

vaieri [72.5K]3 years ago

7 0

3 (k-12) = k-30

3k - 36 = k - 30

3k - k = -30 + 36

2k = 6

k = 3

ollegr [7]3 years ago

7 0

First you distribute and get 3k-36=k-30.
Next you bring the variables to one side and it becomes 2k-36=-30
Then you add 36 to both sides and you get 2k=6
Lastly you divide by 2 and you get k=3 which is the answer

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Can i please get help on this Question?

Shalnov [3]

Hi there!

Given:
$4m + \frac{23 + n}{p - 3} \\ m = 7 \\ n = 2 \\ p = 8$

In order to evaluate the expression with the given values of m, n and p, we must substitute then into the expression. Then we use the correct order of operations (PEMDAS) to calculate.

Let's substitute first!
$4(7) + \frac{(23 + 2)}{(8 - 3)}$

Now find the numerator and denominator of the fraction.
$4(7) + \frac{25}{5}$

Next up: multiplying
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Divide the fraction.
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And finally add the integers.
$33$

Hence, the answer is 33.
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3 0

3 years ago

Read 2 more answers

A dozen apples costs $2.25. At this rate, how much would 4 apples cost?

AlekseyPX

Answer:

$0.75

Step-by-step explanation:

dozen=12

12=$2.25

1=2.25/12

4=2.25/12*4

=$0.75

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3 years ago

In the park, Bryce hikes 4 1/2 mi and Jessie hikes 6 7/16 mi. How much farther does Jessie hike than Bryce? Express your answer

soldier1979 [14.2K]

is simply the difference of both amounts, but firstly let's convert the mixed fractions to improper, and subtract.

$\bf \stackrel{mixed}{4\frac{1}{2}}\implies \cfrac{4\cdot 2+1}{2}\implies \stackrel{improper}{\cfrac{9}{2}}
\\\\\\
\stackrel{mixed}{6\frac{7}{16}}\implies \cfrac{6\cdot 16+7}{16}\implies \stackrel{improper}{\cfrac{103}{16}}
\\\\[-0.35em]
\rule{34em}{0.25pt}\\\\
\stackrel{Jessie}{\cfrac{103}{16}}-\stackrel{Bryce}{\cfrac{9}{2}}\implies \stackrel{\textit{our LCD is 16}}{\cfrac{(1)103-(8)9}{16}}\implies \cfrac{103-72}{16}\implies \cfrac{31}{16}\implies 1\frac{15}{16}$

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4 years ago

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Find the rate of change given the following solutions: (6, 2) and (1, 12).

blagie [28]

Answer:

The rate of change is -2

Step-by-step explanation:

f(b)-f(a) 12-2 10

---------- = ------------ = -------- = -2

b-a 1-6 -5

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3 years ago

What is the solution to 3x + 1 < 2x - 2 < 5x +7

Law Incorporation [45]

This inequality has NO SOLUTION:

PROOF:

3x + 1 < 2x - 2 < 5x +7

1st let's analyze the 1st inequality: 3x+1<2x-2
3x-2x <-2-1 Then x <-3

2nd let's analyze the 2nd inequality: 2x-2 < 5x+7
2x-5x < 7+2 Then -3x<9 OR 3x > - 9 and x> - 3

In the 1st we have x <-3 in the 2nd we have x > - 3 which is impossible

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3 years ago