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Maurinko [17]
3 years ago
10

Point (m,5)lies on line 5x-y=20 find m​

Mathematics
2 answers:
Feliz [49]3 years ago
8 0

Answer:

m = 5

Step-by-step explanation:

Let's convert 5x - y = 20 to slope-intercept format: y = mx + b

5x - y = 20

-y = -5x + 20

y = 5x - 20

Now, we can input the y-value(5) to find the x-value(m)

5 = 5m - 20

25 = 5m

m = 5

-Chetan K

Rudik [331]3 years ago
6 0

Answer:

m = 5

Step-by-step explanation:

Given , x = m, y = 5 (from (m,5) )

5x - y = 20

=> 5m - 5 = 20

=> 5m = 20 + 5

=> 5m = 25

=> m = 25/5

=> m = 5

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Female athletes at the University of Colorado, Boulder, have a long-term graduation rate of 67% (Source: Chronicle of Higher Edu
VLD [36.1K]

Answer:

Yes, we can assume that the percent of female athletes graduating from the University of Colorado is less than 67%.

Step-by-step explanation:

We need to find p-value first:

z statistic = (p⁻ - p0) / √[p0 x (1 - p0) / n]

p⁻ = X / n = 21 / 38 = 0.5526316

the alternate hypothesis states that p-value must be under the normal curve, i.e. the percent of female athletes graduating remains at 67% 

H1: p < 0.67 

z = (0.5526316 - 0.67) / √[0.67 x (1 - 0.67) / 38] = -0.1173684 / 0.076278575

z = -1.538681 

using a p-value calculator for  z = -1.538681, confidence level of 5%

p-value = .062024, not significant

Since p-value is not significant, we must reject the alternate hypothesis and retain the null hypothesis.

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3 years ago
(25 points) A weather reporter in your area said that the speed of sound in air today is about one thousand one hundred feet per
Rashid [163]
1 thousand and 1 hundred means 1100. 

In scientific notation, it's 1.1*10^3
6 0
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Lily took a survey of 80 students on 7th grade and 150 students in 8th grade she found that 80% of the 7th graders like country
Anarel [89]

Answer:

Step-by-step explanation:

80 over 100*150

80 divided by 100=0.8 *150=1208student

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8 0
3 years ago
HELP QUICKLY PLEASE
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3 years ago
Sam works 1/5 hour at the register of a store. He works 2/3 hour in the back stock room and 1/2 hour helping customers. How many
AleksandrR [38]

Answer:

Sam worked  \frac{41}{30}  hours that day (fractional answer)

Step-by-step explanation:

The total number of hours Sam worked is the sum of all the three hours given.

Let's add the first 2 using LCM and then add that result with the last.

Firstly:

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Now,

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The hours worked by Sam is 41/30 hours (fractional answer).

7 0
4 years ago
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