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Nastasia [14]
3 years ago
6

If 2k - 3 = 9 (k+7)-3 then k is ????

Mathematics
2 answers:
Akimi4 [234]3 years ago
6 0

Answer:

K = -9

Step-by-step explanation:

2k-3 = 9(k+7)-3

2k-3 = 9k+63-3

2k-3 = 9k+60

2k-9k = 60+3

-7k = 63

-k = 9

k = -9

m_a_m_a [10]3 years ago
4 0

Answer:

k= -9

Step-by-step explanation:

2k-3=9k+63-3     [expand the 9(k+7) first]

2k-9k=63-3+3     [put the like terms together]

-7k=63                 [do the simple math]

k= 63 ÷ by -7

k=-9  

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A pair of pants cost 50% more than a tie. A shirt cost 25% more than the same tie. By what percentage is the cost of the pair of
Lisa [10]

<u>Answer</u>

20%


<u>Explanation</u>

let the cost of tie = x

Then cost of a pair of pants = (100+50)%x

                                               = 150%x

                                                 = 1.5x

The cost of shirt = (100+25)%x

                           = 125%x

                             = 1.25x

(1.5x - 1.25x)/1.25x × 100

0.25x/1.25x × 100

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8 0
4 years ago
If land the domain of the following peicewise function f(x)={x^2 +2 if -6
tester [92]

Answer:

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Step-by-step explanation:

3 0
3 years ago
A wheel rotates 15 times each minutes. How many degrees will it rotate in 1 second of time?​
liubo4ka [24]

Answer:

In 1 second it Rotates 15× 360 / 60

Step-by-step explanation:

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This implies that the wheel completes

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8 0
3 years ago
G(8.3,-1.4) is the midpoint between B(x,y) and L(-5.9,8). Find the coordinates of B
Dominik [7]

The coordinates of B is (22.5, -3.6)

<h3>How to find the coordinates of B?</h3>

The points are given as:

G = (8.3,-1.4)

B = (x,y)

L = (-5.9,8).

The midpoint is calculated as:

G = 0.5 * (x1 + x2, y1 + y2)

So, we have:

(8.3,-1.4)  = 0.5 * (x - 5.9, y + 0.8)

This gives

(16.6,-2.8)  = (x - 5.9, y + 0.8)

Solve for x and y

x - 5.9 = 16.6

y + 0.8 = -2.8

Evaluate

x = 22.5

y = -3.6

Hence, the coordinates of B is (22.5, -3.6)


Read more about midpoints at:

brainly.com/question/25886396

#SPJ1

4 0
2 years ago
Is 1/2 or 4/8 bigger???
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1/2 x 2/2 = 4/8

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