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adell [148]
2 years ago
5

Which value of x makes the equation true?

Mathematics
1 answer:
Gnesinka [82]2 years ago
5 0

Answer:

C. x=8.5

Step-by-step explanation:

-18+3x+x=-2(2x-25)

-18+4x=-4x+50

   +4x   +4x

-18+8x=50

+18      +18

8x=68

8    8

x=8.5

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How do you factor the expression<br> 20k+50
Aliun [14]
Answer is 10(2k+5)

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

Work Shown:

20k+50 = 10*2k + 10*5
20k+50 = 10(2k+5)

Note how we can distribute the 10 back in to check our work
10(2k+5) = 10(2k)+10(5) = 20k+50
so that confirms we have the right answer

Another thing to notice is that 10 is the largest factor that we can pull out of 20k and 50. The value 10 is the GCF (greatest common factor) of 20 and 50.
4 0
3 years ago
Read 2 more answers
A block of wood has a mass of 120 g Qubed and a volume of 200cm what is density of wood
grandymaker [24]

density = mass / volume

so d= 120g / 200cm^3

d=0.6 g /cm^3

7 0
3 years ago
How to find instantaneous rate of change?
tensa zangetsu [6.8K]
Just differentiate it with time or with whatever respect you want ! mainly it is time !
6 0
3 years ago
The equation y = kx represents a proportional relationship between x and y, where k is the constant of proportionality. For a mo
valentinak56 [21]

Answer:

Step-by-step explanation:

y = kx represents a proportional relationship between x and y

where,

k is the constant of proportionality

Given:

d = st

Where,

d = distance

s = speed

t = time

The constant of proportionality of the quantities d, s and t is speed(s)

Speed(s) remains constant at a given time and distance

The equation can be written in different forms below:

d = st

S = d/t

t = d/s

Real world example of proportional relationships

• F=ma

Where,

F=Force

m=mass

a=acceleration

F=ma is used to calculate force

3 0
3 years ago
Help me asap you guys i need help
Thepotemich [5.8K]

Hi there! :)

Answer:

\huge\boxed{C}

To simplify the process, convert each given weight into standard notation:

Lion:

1 * 10^{5} = 1 * 100000 = 100,000 g

Ant:

2 * 10^{-3}  =  2* 0.001 = 0.002

Divide the ant's weight from the lion's weight:

100000 / 0.002 = 50,000,000

Convert to scientific notation: (use # of zeros to determine exponent)

50,000,000 = 5 * 10^{7}

Therefore, the correct answer is C.

5 0
3 years ago
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