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SSSSS [86.1K]
3 years ago
7

10. If PQRS is a parallelogram, then P - R is:(a) 20(b) 30(c) 90(d) 0​

Mathematics
1 answer:
statuscvo [17]3 years ago
4 0

Answer:

d) 0

Step-by-step explanation:

P -R = 0

Because in parallelogram, opposite angles are equal.

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pshichka [43]

Answer:

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Step-by-step explanation:

Because ab is not negative but c has the negative sign in front of it

5 0
3 years ago
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A random sample of 17 hotels in Boston had an average nightly room rate of $165.40 with a sample standard deviation of $21.70. T
Citrus2011 [14]

Answer:

•Lower confidence limit = $155.2109

•Upper confidence limit ,= $174.5891

Step-by-step explanation:

We are given:

U = 17

x' = $165.40

S.d = $21.70

a = 10℅ (90℅ confidence interval)

For s.d(x'), we have:

S/√u = \frac{21}{\sqrt{7}}

= 5.2630

Therefore, S.E (x') = $5.2630

At a= 0.10 (90℅ confidence level)

and degree of freedom = 16 (17-1)

Thus, t_1_6_, _0_._1_0 = 1.746

90℅ confidence interval all around sample mean, will be:

(x' ± t_(_n_-_1); a S.E (x')

= (165.4±(174.6)(5.2630)

(165.5±9.189)

($156.2109, $175.5891)

5 0
3 years ago
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What is the length if the height is 15 and the area is 45? *
Scrat [10]
I’m not sure but hi :)
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3 years ago
6-3+k=32<br><br> Solve equation.
zaharov [31]

Answer:

k=29

Step-by-step explanation:

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3 years ago
Javier weighs 175% of his brother's weight. If Javier's brother weighs 80 pounds, how much does Javier weigh?
zaharov [31]

Answer:

140

Step-by-step explanation:

80 x 1.75 = 140

6 0
3 years ago
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