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AlladinOne [14]
3 years ago
10

EXPERT HELP EXPLAIN THE ANSWER:

Mathematics
2 answers:
Rudik [331]3 years ago
7 0
The answer is b I just did the test
KengaRu [80]3 years ago
4 0

Answer: Its B!!!

Step-by-step explanation:

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Which expression can be used to check the answer to 56+(-14)=n?
Delvig [45]

Answer: n = 42

Step-by-step explanation:

56 - 14 = 42

If + and - are right next to each other, the + cancels out.

7 0
3 years ago
Read 2 more answers
Anyone know how to do these and explain so I can do the rest lol.
klasskru [66]

Answer:

Option B. m⁷/n²  is the correct answer.

Step-by-step explanation:

Identity,

xᵃ * xᵇ = xᵃ⁺ᵇ  

xᵃ/xᵇ = xᵃ⁻ᵇ

x⁻ᵃ = 1/xᵃ

It is given that,

m⁻⁶ n⁻³/m⁻¹³ n⁻¹

Using  these three identities we can write,

m⁻⁶ n⁻³/m⁻¹³ n⁻¹ = m⁻⁶ m¹³/n⁻¹n³   (since x⁻ᵃ = 1/xᵃ)

m⁻⁶ m¹³/n⁻¹n³ =m⁽⁻⁶⁺¹³⁾/n⁽⁻¹⁺³⁾ = m⁷/n²  (since xᵃ * xᵇ = xᵃ⁺ᵇ   and xᵃ/xᵇ = xᵃ⁻ᵇ)

Therefore Option B. m⁷/n² is the correct answer

6 0
3 years ago
Read 2 more answers
A student who is training for a distance race jogged for thirty minutes and covered a distance of 7.5 km. What is the average sp
Tju [1.3M]

Answer:

<h2>Average speed is 15km/h</h2>

Step-by-step explanation:

Step one:

given data:

total distance =7.5km

time taken= 30 min= 0.5 hours

we know that the average speed is the average distance divided by time taken

Step two:

mathematically expressed as

speed=distance/time

substituting we have

speed=7.5/0.5

speed=15km/hour

Hence the average speed is 15km/h

3 0
3 years ago
It’s easy please help please please
lions [1.4K]

Step-by-step explanation:

4x - 2y = 8

y = -2

4x -2(-2) = 8

4x + 4 = 8

4x = 4

x = 1

5 0
2 years ago
A fish was at 1,965 feet below sea level. It then swam down to 2,327 feet below sea level. How far did the fish swim? [INTEGERS
Allisa [31]

Answer: Its negative

Step-by-step explanation:

7 0
2 years ago
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