Mathematics
Mathematics, 31.10.2019 22:31, etwerner23

If you can, answer at least half or more : d you so much!

what value of x satisfies the equation 4x+0.2=3?

which equation has the solution, k=1.2?

3k+2=5.4

2k+5.4=3

2k+3=5.4

3k+5.4=2

what value of x satisfies the equation x6βˆ’15=730?


choose all the equations that have a=-1/2 as a solution.

2a/7+6/7=5/7

2a/7βˆ’6/7=5/7

4a/7+3/7=1/7

4a/7βˆ’3/7=1/7

7 times the difference of a number and 3.2 is 8.4.

find the number.

-4.4

-0.74

1.66

4.4

what value of x satisfies the equation 5x+1.5=7? explain your answer.

x=1.1 satisfies the equation because 7βˆ’1.5=5.5 and 5.55=1.1.

x=1.1 satisfies the equation because 7βˆ’1.5=5.5 and 1.1β‹…5=5.5.

x=-1.1 satisfies the equation because 1.5βˆ’7=-5.5 and -1.1β‹…5=-5.5.

x=-1.1 satisfies the equation because 1.5βˆ’7=-5.5 and -5.55=-1.1.


what value of x satisfies the equation 3x+1.2=3? explain your answer.

x=-0.6 satisfies the equation because 1.2βˆ’3=-1.8 and -0.6β‹…3=-1.8.

x=0.6 satisfies the equation because 3βˆ’1.2=1.8 and 0.6β‹…3=1.8.

x=-0.6 satisfies the equation because 1.2βˆ’3=-1.8 and -1.8/3=-0.6.

x=0.6 satisfies the equation because 3βˆ’1.2=1.8 and 1.8/3=0.6.

one sixth of a number, z, added to one fourth of the same number is 76.

what is the number? explain your answer.

a.47, because the equation that represents this sentence is 1/6zβˆ’1/4z=7/6.

b.145, because the equation that represents this sentence is 1/6z+1/4z=7/6.

c.74, because the equation that represents this sentence is 1/6z+1/2z=7/6.

d.112, because the equation that represents this sentence is 1/6z+1/4=7/6.

hree halves of a number, z, added to one third of the same number is 13.

what is the number and why?

a. 213, because the equation that represents this sentence is 2/3z+3/2z=1/3.

b. 211, because the equation that represents this sentence is 3/2z+1/3z=1/3.

c. 112, because the equation that represents this sentence is 3/2z+1/3z=1/3.

d. 132, because the equation that represents this sentence is 2/3z+3/2z=1/3.

answer
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