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monitta
4 years ago
15

The highest point in North America is Mt. McKinley, and the lowest point is Death Valley. Mount McKinley is 6184 m above de leve

l. Death Valley is 87 m below sea level. Is 6100 m or 6300 m a better estimate of the difference between these heights? Explain
Mathematics
2 answers:
Karo-lina-s [1.5K]4 years ago
8 0
It's probably 6300. Adding the two numbers together gives you 6271, which can be rounded up to 6300.
Agata [3.3K]4 years ago
5 0
It's 6,300 because 6184 about 6200..…
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kari74 [83]
V = s/t => average speed = 39,1/2,06= about 19 mi/hr, i guess
6 0
3 years ago
If sin(y°) = cos(x°), which of the following statements is true?
Firdavs [7]

Answer:

<u>y = w and ΔABC ~ ΔCDE</u>

Step-by-step explanation:

Given sin(y°) = cos(x°)

So, ∠y + ∠x = 90°  ⇒(1)

And as shown at the graph:

ΔABC is aright triangle at B

So, ∠y + ∠z = 90° ⇒(2)

From (1) and (2)

<u>∴ ∠x = ∠z </u>

ΔCDE is aright triangle at D

So, ∠x + ∠w = 90° ⇒(3)

From (1) and (3)

<u>∴ ∠y = ∠w</u>

So, for the triangles ΔABC and ΔCDE

  • ∠A = ∠C  ⇒ proved by ∠y = ∠w
  • ∠B = ∠D  ⇒ Given ∠B and ∠D are right angles.
  • ∠C = ∠E  ⇒ proved by ∠x = ∠z

So, from the previous  ΔABC ~ ΔCDE by AAA postulate.

So, the answer is <u>y = w and ΔABC ~ ΔCDE</u>

4 0
3 years ago
Read 2 more answers
What is the solution to the system of equations graphed below?<br><br><br> Help please.
Goryan [66]
Whats the attachment
6 0
4 years ago
Read 2 more answers
A national business magazine reports that the mean age of retirement for women executives is 61.7. A women’s rights organization
Marina CMI [18]

Answer:

The calculated value |Z| = |-2.0375| = 2.0375<2.0541.96 at 0.02 level of significance

A women’s rights organization believes that the average value does not accurately depict the current trend in retirement.

Step-by-step explanation:

<u><em>Step(i):-</em></u>

Given that the mean age of retirement for women, executives is 61.7

Given mean of the Population = 61.7

Given that the size of the sample 'n' = 82

Given that the mean of sample x⁻ = 60.8

Given that the standard deviation  'σ' = 4.0years

<u><em>Step(ii):-</em></u>

Null hypothesis:H₀: μ ≠ 61.7

Alternative Hypothesis: H₁: μ = 61.7

Test statistic

    Z = \frac{x^{-} -mean}{\frac{S.D}{\sqrt{n} } }

   Z = \frac{60.8-61.7}{\frac{4.0}{\sqrt{82} } }

  Z =  -2.0375

|Z| = |-2.0375| = 2.0375< 2.054 at 0.02 level of significance

<u><em>Final answer:-</em></u>

The calculated value |Z| = |-2.0375| = 2.0375 <2.054 at 0.02 level of significance

A women’s rights organization believes that the average value does not accurately depict the current trend in retirement.

   

7 0
3 years ago
6x + 11 + 3x .........................................
Westkost [7]

Answer: I'm assuming you want this problem simplified.

6x + 11 + 3x

Combine like terms: 9x + 11

Your expression now looks like: 9x + 11

There is nothing left to simplify, so you're done!

Hope this helps!

3 0
3 years ago
Read 2 more answers
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