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creativ13 [48]
3 years ago
15

What the full work out for this A mesasurment on a house plan scaled at 1:100 is Calculate what this would represent in a real h

ouse? 3cm x 100= 300 cm or 3m long
2. A buliding architet drawing has wall 4cm long and the scale on the drawing is 1:50 what is the actual length of wall that needs to be built?
4cm x 50 = 200cm =2m long

Mathematics
1 answer:
MaRussiya [10]3 years ago
5 0

Answer:

you have to have the a measurement with the 3cmx 100 q1the anser is 1

Step-by-step explanation:

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B) 64/125

Step-by-step explanation:

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Mrs. Powell has $800 invested in stocks and $500 invested in a Certificate of Deposit. The CD has an interest rate twice as grea
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Let's use the variable "r" to represent the investment rate of the stocks:
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You and your friends find a rope that hangs down 15 m from a high tree branch right at the edge of a river. You find that you ca
Crazy boy [7]

Answer:

Vertical angle=9.5°

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Step-by-step explanation:

The maximum distance x is reached when rope swings to a maximum height, maximum height is gotten from the equation KE= 1/2MU^2 = MgH = MgL= Mgl(1- cos theta.

Where theta is the vertical angle, U=2m/s and L= 15m

2gl -2glcostheta=U^2

2gl U^2=2gl cos theta

But theta= Acos(1- U^2)/2gl

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Maximum height li given by

Lsintheta

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6 0
3 years ago
A metropolitan transportation authority has set a bus mechanical reliability goal of 3,800 bus miles. Bus mechanical reliability
DaniilM [7]

Answer:

(A) T-stat = 1.82

(B) Critical value is 1.645

(C) Yes, there is sufficient evidence to reject the null hypothesis using a 0.05 significance level.

Step-by-step explanation:

(A) T-stat (z) = (sample mean - population mean) ÷ sd/√n

sample mean = 3850 bus miles

population mean = 3800 bus miles

sd = 275 bus miles

n = 100

z = (3850 - 3800) ÷ 275/√100 = 50 ÷ 275/10 = 50 ÷ 27.5 = 1.82

(B) The test is a one-tailed test. The critical value is obtained from the standard normal distribution table. The critical value using a 0.05 significance level is 1.645

(C) Null hypothesis: The bus mechanical reliability is 3850 bus miles.

Alternate hypothesis: The bus mechanical reliability is less than 3850 bus miles.

Conclusion:

There is sufficient evidence to reject the null hypothesis because the test statistic (1.82) is greater than the critical value (1.645)

6 0
3 years ago
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