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Pie
3 years ago
13

Plz plz help plz plz​

Mathematics
2 answers:
Ilia_Sergeevich [38]3 years ago
7 0

Answer:

1

Step-by-step explanation:

when dividing numbers with exponents with the same base, subtract the exponents.

\frac{8^{7} }{8^{7} }

7 - 7 = 0

\frac{8^{7} }{8^{7} } = 8^{0}

anything to the power of 0 is 1

8^{0}= 1

Lunna [17]3 years ago
4 0

Answer:

1

Step-by-step explanation:

Any number divided by itself equals 1 with the exception of 0 since 0/0 is undefined.

8^7 is not equal to zero, so without doing any calculations or using any other rules, we know that

8^7/8^7 = 1

We can use the rule of exponents for dividing powers.

Rule:

\dfrac{a^m}{a^n} = a^{m - n}

Here we have a = 8, m = 7, and n = 7.

Applying the rule, we get

\dfrac{8^7}{a^7} = 8^{7 - 7} = 8^0

Another rule of exponents:

a^0 = 1

We the zero power rule now:

8^0 = 1

Therefore,

\dfrac{8^7}{a^7} = 1

Answer: 1

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Which is the correct answer
denpristay [2]

Answer:

44 2/4

Step-by-step explanation:

178/4= 44.5

44 2/4 =

44 x 4 = 176

176 + 2 = 178

hope this helps and if it is wrong i am sorry

4 0
3 years ago
the bottom of zeyda's jewelry box is a rectangle with length 5 3/8 inches and width 3 1/4 inches. What is the area of tge bottom
nadya68 [22]
Well you could do 5 3/8 plus 3 1/4 and your denominator 4 can become a 8 so multiply 4x2 to get 8 and 2x1 to get 3 2/8 and add that to 5 3/8 to get the sum of 8 7/8
4 0
3 years ago
Read 2 more answers
1. Find the value of x in the figure below.
bagirrra123 [75]

Answer:

see details and attached figure below.

Step-by-step explanation:

Going row by row

1. 12  (isosceles triangles have equal legs from the vertex)

2. 55 deg. (isosceles triangles have equal base angles)

3. 90 = 180-45-45 (isosceles triangles have equal base angles)

4. 2x-8 = 10

=> x = 18/2 = 9 (isosceles triangles have equal legs from the vertex)

5. sum of angles of triangle = 180

3x+3x+2x+4 = 180 => 8x = 176, x = 22, angle A = 3x = 66 deg.

6. sum of angles of triangle = 180

(isosceles triangles have equal base angles)

25+25+angle Z = 180 => angle Z = 180-25-25 = 130

7 0
4 years ago
Read 2 more answers
The distance traveled at a constant speed is directly proportional to the time of travel. If Olivia traveled 112 miles in 3.5 ho
NARA [144]

Answer:

The distance traveled at a constant speed is directly proportional to the time of travel. If Olivia traveled 112 miles in 3.5 hours, how many miles will Olivia travel in 8.9 hours at the same constant speed?

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

Proportion:

x/8.9 = 112/3.5

---

x = 8.9(112/3.5)

x = 284.8 miles

=====================

Cheers,

7 0
3 years ago
Read 2 more answers
Refer to the Teaching Psychology (May 1998) study of how external clues influence performance. Two different forms of a midterm
kozerog [31]

Answer:

P(X

P(Y

So for this case we have a higher probability for the red exam so we can conclude that the student is more likely to score below 20% on the difficult questions in the red one.

Step-by-step explanation:

Previous concepts

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

The Z-score is "a numerical measurement used in statistics of a value's relationship to the mean (average) of a group of values, measured in terms of standard deviations from the mean".  

Solution to the problem

Let X the random variable that represent the scores for the blue exam, and for this case we know the distribution for X is given by:

X \sim N(53,15)  

Where \mu=53 and \sigma=15

We are interested in the probability that P(X<20%)

And the best way to solve this problem is using the normal standard distribution and the z score given by:

z=\frac{x-\mu}{\sigma}

And if we replace we got:

P(X

Let Y the random variable that represent the scores for the red exam, and for this case we know the distribution for X is given by:

Y \sim N(39,12)  

Where \mu=39 and \sigma=12

We are interested in the probability that P(Y<20%)

And the best way to solve this problem is using the normal standard distribution and the z score given by:

z=\frac{y-\mu}{\sigma}

And if we replace we got:

P(Y

So for this case we have a higher probability for the red exam so we can conclude that the student is more likely to score below 20% on the difficult questions in the red one.

7 0
4 years ago
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