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-Dominant- [34]
2 years ago
7

Simplify: 5 square root 7 x 7 square root 7

Mathematics
2 answers:
lozanna [386]2 years ago
7 0

Answer:

35 square root of 49

Step-by-step explanation:

frez [133]2 years ago
3 0

Both 5 and 7 are prime numbers so they cannot be factored.

√5×√7=√5√7=√35



Hope this helps ;)
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A tunnel is in the shape of a parabola. The maximum height is 31 m and it is 13 m wide at the base as shown below.
yan [13]
Using the given values from the problem and the illustration, three points are known which are (0,0), (6.5,-31), (-6.5,-31). The first step in solving this problem is to determine the equation of the parabola.
y = ax²
-31 = a(6.5)²
-31 = 42.25a 
a = -31/42.25 
a = -124/169 

Therefore, the equation of the parabola is y = (-124/169)x². The value 4.5 is then substituted in the equation as x to get the answer which is 16.14 meters.
6 0
2 years ago
Can someone please answer step by step?
alukav5142 [94]

Answer:

George is correct

Step-by-step explanation:

if the jacket is in sales for 20% off, Jane's coupon would give her a discount of 10% on top of the already discounted 20%.

Jane is incorrect because, if she added the 2 discount together, she gets a total of 30%, but that is a 30% discount of the original price of $75 which isn't correct. what we want to do is find how much the jacket cost after 20% discount THEN use the coupon to get a further 10% discount on the sales price of the jacket. and for this reason, George is correct.

hope this helped

3 0
2 years ago
Percentage of the different pet people own:
Verizon [17]

Answer:

The answer should be 120.

Step-by-step explanation:

30% of 400 = 120 cats

8 0
3 years ago
Does anyone know the answers to these?
dem82 [27]

Step-by-step explanation:

a. The point estimate is the mean, 47 days.

b. The margin of error is the critical value times the standard error.

At 31 degrees of freedom and 98% confidence, t = 2.453.

The margin of error is therefore:

MoE = 2.453 × 10.2 / √32

MoE = 4.42

c.  The confidence interval is:

CI = 47 ± 4.42

CI = (42.58, 51.42)

d. We can conclude with 98% confidence that the true mean is between 42.58 days and 51.42 days.

e. We can reduce the margin of error by either increasing the sample size, or using a lower confidence level.

3 0
3 years ago
rudie earn 942 each month. last month gis fixed expense month were 625 and his variable expenses were 259. how much did he save
mel-nik [20]

Answer:

He saved 58 last month.

Step-by-step explanation:

All expenses: 625 + 259 = 884

Total earned: 942 - 884 = 58

7 0
2 years ago
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