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2 years ago

How many solutions does the equation 6z − 3z − 7 = −2 + 3 have?

Mathematics

1 answer:

xxTIMURxx [149]2 years ago

6 0

Answer:

Equation have Unique solution with $z=2.67$

Step-by-step explanation:

Given Equation:

$6z - 3z - 7 = -2 + 3$

Solving the equation:

$6z-3z-7=1$

Adding 7 to both sides:

$6z-3z-7+7=1+7\\\\6z-3z=8\\\\3z=8\\\\z=8/3 \\\\or\\\\ z=2.67$

The Equation have Unique solution with $z=2.67$

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A train to New York city leaves a station every 7 minutes. Another train to Boston leaves the station every 6 minutes. Suppose i

Virty [35]

Answer:

7:12 a.m

Step-by-step explanation:

Given that:

Train to New York city leaves station every 7 minutes

Train to Boston leaves station every 6 minutes

Current time = 6:30 a.m

Time both will leave station together is obtained by finding the least common multiple of 6 and 7

Multiples of ;

6 = 6, 12, 18, 24, 30, 36, 42, 48, 54, 60,...

7 = 7, 14, 21, 28, 35, 42, 49, 56, 63, 70,...

The least common multiple of 6 and 7 is 42.

Hence, both trains will leave the station together after 42 minutes ;

Current time + 42 minutes

6:30 a.m+ 42 minutes = 7:12 a.m

7 0

2 years ago

a person who take 40 paces to cover 20m finds that a square field has a side that is 520 paces long .calculate the length of the

Hoochie [10]

Look at picture for explanation

4 0

3 years ago

Simplify the following expressions by using the order of operations

MariettaO [177]

11. 6 + 5 * 2 + (-3)
6 + 10 - 3
16 - 3
13 <==

12. 67 + 84 - 12 * 4 / 16
67 + 84 - 48/16
67 + 84 - 3
148 <==

13. -5 * -6 - 25/5 - 2
30 - 5 - 2
23 <==

14. 18 - (9 + 3) + 2^3
18 - 12 + 8
14 <==

15. -24 / -6 * 2
4 * 2
8 <==

16. 8 [ (26 + 10) - 4(3 + 2)]
8 [ (36 - 4(5)]
8 [ 36 - 20 ]
8 [ 16 ]
128 <==

17. 6 * 3 / 9 * 2 + 1
18/9 * 2 + 1
2 * 2 + 1
4 + 1
5 <==

18. (9 - -4)(-8 - -7)
(9 + 4)(-8 + 7)
13 * -1
-13 <==

5 0

3 years ago

PLEASE HELP THIS IS DUE SOON <33

ozzi

Answer:

5 inches

Step-by-step explanation:

Theorem states that the smaller two sides of a triangle have to be greater than the biggest side.

The least possible answer would be 5 inches.

6 0

2 years ago

2350 million in standard form

topjm [15]

Answer:

in this problem we have

2,350 million

Remember that

1 million=1,000,000

2,350 million=2,350*1,000,000=2,350,000,000

convert to standard form

2,350,000,000=2.35*10^{9}

therefore

the answer is

2.35*10^{9}

Step-by-step explanation:

8 0

3 years ago

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