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IceJOKER [234]
3 years ago
11

Expand the following 4 (x - 1)

Mathematics
2 answers:
RSB [31]3 years ago
7 0

Answer:

4x - 4

Step-by-step explanation:

4 × x = 4x

4 × -1 = -4

4x - 4

pantera1 [17]3 years ago
3 0

Answer:

4x-4

Step-by-step explanation:

  • 4(x-1)
  • 4*x-1*4
  • 4x-4
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It takes Emily eight hours to paint her house. Mike can paint the same area in nine hours. Find how long it would take them if t
emmasim [6.3K]

It will take them 4.24 hours together to paint the area together

Step-by-step explanation:

If Emily takes eight hours to paint the area then she will paint 1/8 of the house in one hour

Similarly, if Mike can paint the same area in 9 hours, then he will paint 1/9 of the same area

Let x be the number of hours in which they will together paint the area.

If x hours are taken by them to paint the area then 1/x of the area will be painted in one hour

So,

\frac{1}{8}+\frac{1}{9}=\frac{1}{x}\\Multiplying\ both\ sides\ with\ the\ LCM\\72x\\(72x)*\frac{1}{8}+(72x)*\frac{1}{9}=72x * \frac{1}{x}\\9x+8x=72\\17x=72\\Dividing\ both\ sides\ by\ 17\\\frac{17x}{17}=\frac{72}{17}\\x=4.24\ hours

It will take them 4.24 hours together to paint the area together

Keywords: Linear equation, Variables

Learn more about linear equations at:

  • brainly.com/question/10772025
  • brainly.com/question/10879401

#LearnwithBrainly

4 0
3 years ago
Read 2 more answers
PLEASE ANSWERRR NOW!!!
finlep [7]

The answer is [ yes; ΔJLK ~ ΔMLN by AA Similarity ]

AA similarity states that both triangles have corresponding angles that equal the same measure. Even though the question doesn't state the measure of the angles, the angles look the same.

ASA similarity states that two angles and a side equal the same in both triangles. Both triangles in the image aren't the same size, so, this is also false.

Best of Luck!

7 0
3 years ago
HELP ASAP PLEASE
Verizon [17]

Answer:

  • 1.25 g

Step-by-step explanation:

<u>Given:</u>

  • Initial mass is m = 80 g.
  • Half life = 10 days
  • Total time = 60 days

<u>Number of half-life periods:</u>

  • r = 60/10 = 6

<u>Equation for remaining sample:</u>

  • s = m*(1/2)^r
  • s = 80*(1/2)^6 = 80/64 = 1.25 g
5 0
2 years ago
Which ordered pair is a solution to the system of inequalities?
Vinil7 [7]
A! Because 9 is greater than 2 and 9 is greater than 7






5 0
3 years ago
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Convert 8.1616 to a fraction
loris [4]

<u>The answer is 808/99</u>




7 0
3 years ago
Read 2 more answers
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