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2 years ago

5-7k=-4(k+1)-3 add work pleasee!!!

Mathematics

2 answers:

soldi70 [24.7K]2 years ago

5 0

K=4
Tip next time you do this try using a calculator more reliable.

marshall27 [118]2 years ago

3 0

Answer:

k=4

Step-by-step explanation:

5-7k=-4(k+1)-3

Distribute

5-7k=-4k-4-3

Combine like terms

5-7k=-4k-7

Add 7k to each side

5-7k +7k = -4k+7k-7

5 = 3k-7

Add 7 to each side

5+7 = 3k-7+7

12 = 3k

Divide by 3

12/3 = 3k/3

4=k

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amid [387]

Answer: that is equivalent to 447

Step-by-step explanation:

5 0

3 years ago

7 times what gives me 36

Zolol [24]

To get the answer, divide 36 by 7. And the answer of that is 5.1428571428571429

8 0

2 years ago

What is the actual height of the building shown in the model?

julsineya [31]

Answer:

The actual height is 150ft

Step-by-step explanation:

Given

$Width : Height = 2cm : 5cm$

$Actual\ width = 60ft$

Required

Determine the actual height

Substitute 60ft for width in: $Width : Height = 2cm : 5cm$

$60ft:Height =2cm:5cm$

Express as fraction

$\frac{60ft}{Height} =\frac{2cm}{5cm}$

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Make height the subject

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7 0

3 years ago

Read 2 more answers

Solve by using any method of substitution<br><br>4 +8x = y <br>6x - y = 2

Bumek [7]

Answer:

(-3,-20)

Step-by-step explanation:

4 +8x = y ...... equation (1)

6x - y = 2 ........equation(2)

from equation 2

6x - y = 2

6x -(4+8x) =2

6x - 4 + 8x = 2

+4 +4

6x - 8x = 6

-2x=6

divide by -2

x= -3

put x in equation (1) to solve for y

4 + 8x = y

4+8(-3)=y

4-24=y

-20=y

y= -20

solution = (-3,-20)

8 0

3 years ago

What is the answer meyn?

Alexandra [31]

Answer:

the best value is two 50 ml bottles

Step-by-step explanation:

Okay focus with me , if you buy a bottle of 50 ml you will get a second for half price so we can say that --> 2 bottles of 50 ml =

$45 + \frac{45}{2} = 67.5$

We get 100 ml with £67.5 just , but when you buy 80ml you must pay £55 Hum !

then you can dived the volume of bottle with price ...

the price of one ml is 0.675 in first State

$\frac{67.5}{100 } = 0.675$

in the second state the price of one ml is

$\frac{55}{80} = 0.6875$

then :

$0.675 < 0.6875$

so the best value is two 50 ml bottles

4 0

3 years ago