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3 years ago

6(3p – 1) = 84 can you help me with this question please? i am struggling to explain this to my son. thanks in advance.

Mathematics

2 answers:

krok68 [10]3 years ago

7 0

On photos i showed 2 ways of possible solutions

olga_2 [115]3 years ago

4 0

Answer: p=5

Step-by-step explanation:

6(3p-1)=84

You can now do it two ways. This is the first way:

Divide by 6 so the equation now writes:

3p-1= 14

Then add the one onto the other side.

3p=15

Then divide 15 by 3

P=5

The other way is to expand the brackets first.

18p-6=84

Then add the 6 onto the other side.

18p=90

Then divide 90 by 18.

P=5

This is a bit more complex so I recommend the first way. Hope you can now explain to your son. Have an amazing day!

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3 years ago

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3 years ago

Read 2 more answers

I need help with these two questions

BlackZzzverrR [31]

Problem 4

Answer: 47

------------------------

Work Shown:

f(x) = x^2 - 7x + 3
f(x) = (x)^2 - 7(x) + 3
f(-4) = (-4)^2 - 7(-4) + 3 ... replace each x with -4
f(-4) = 16 - 7(-4) + 3
f(-4) = 16 + 28 + 3
f(-4) = 44 + 3
f(-4) = 47

============================================================

Problem 5

Answer: See the attached image for the table

------------------------

Work Shown:

Plug in n = 27 and we get...
C = 26 + 10*n
C = 26 + 10*27
C = 26 + 270
C = 296
The input n = 27 leads to the output C = 296. This means that 27 people will have the cost be $296

Do the same for n = 39
C = 26 + 10*n
C = 26 + 10*39
C = 26 + 390
C = 416
The input n = 39 leads to the output C = 416. This means that 39 people will have the cost be $416

and also n = 43 as well
C = 26 + 10*n
C = 26 + 10*43
C = 26 + 430
C = 456
The input n = 43 leads to the output C = 456. This means that 43 people will have the cost be $456

4 0

3 years ago

Frank's bank charges a variable finance rate of 1.5 percent on purchases up to $100, and one percent for purchases over $100. If

Brilliant_brown [7]

Answer:

Hi there, $4.04 should be his finance charge.

Step-by-step explanation:

4 0

3 years ago

The perimeter of a rectangular garden is 42 feet. The length of the garden is 5 feet more than twice the width. Find the length

zlopas [31]

Answer:

W=5.3, l= 15.6

Step-by-step explanation:

Perimeter of a rectangle p=2(l+w)

P= 42

W= x

L= 5+2x therefore 42=2(5+2x+x)

42=10+6x , 32=6x

Make x subject of formula

X=32/6 x=5.3 there for w=5.3

Where L= 5+2x ; L=5+2(5.3)

L therefore = 15.6

3 0

3 years ago