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inna [77]
3 years ago
6

IN A CERTAIN SKYSCRAPER THE ELEVATORS WHISK YOU TO A RESTURAUNT IN THE SKYSCRAPER AT A SPEED OF 800 feet in 70 seconds. If the r

esturaunt is 600 feet up how long will it take you to reach the restaurant by elevator??
Mathematics
2 answers:
d1i1m1o1n [39]3 years ago
8 0
800 /70 = 600/x =42000/800 = 52.5 seconds
givi [52]3 years ago
7 0
Im just gonna get the free points 
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Can someone help me please
Dimas [21]

Answer:

  g(x)=-x^2-8x-22

Step-by-step explanation:

Perform the multiplication and addition:

  g(x)=-(x+4)^2-6=-(x^2+8x+16)-6=-x^2-8x-16-6\\\\g(x)=-x^2-8x-22

_____

<em>Comment on the squaring</em>

There are several ways you can find the square (x+4)².

  1. Use your knowledge that (x+a)² = x²+2ax+a².
  2. Use FOIL* to compute (x+4)(x+4) = x² +4x +4x +4² = x²+8x+16
  3. Use the distributive property: (x+4)(x+4) = x(x+4) +4(x+4) = x² +4x +4x +4² (same as FOIL for two binomials)

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* FOIL is mnemonic for {First, Outer, Inner, Last} referring to pairs of terms in the factors (x +a)(x +b). The x terms are the First terms. The Outer terms are the first x and b. The Inner terms are "a" and the second x. The Last terms are "a" and "b". You are to form the sum of those pairs of terms to find the product of the binomials.

5 0
3 years ago
The sector of a circle has an area of 104pi/9 square inches and a central angle with measure 65 degrees. What is the radius of t
vagabundo [1.1K]

Answer: b : 8

Step-by-step explanation:

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3 years ago
A power system will collapse if a ground fault occurs on any two of lines A, B, and C simultaneously. Assume that ground faults
nadya68 [22]

Answer:

0.000298 = 0.0298% probability that the system will collapse

Step-by-step explanation:

Number of possible ways the system can fail:

2 lines from a set of 3 fail, or all three fail.

Two from a set of 3:

Can be A and B, A and C, or B and C. Three possible outcomes then.

The probability of each is:

0.01*0.01*0.99

Two failling, each with 0.01 probability, and 1 working, with 0.99 probability.

All three:

Each with 0.01 probability.

a) What is the probability that the system will collapse

Both cases, so

p = 3*(0.01)^2*0.99 + (0.01)^3 = 0.000298

0.000298 = 0.0298% probability that the system will collapse

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3 years ago
What are some ways I can have a good wardrobe without breaking the bank?
Alex
Fast fashion even though you promoting child labor if you were that poor go ahead
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3 years ago
Two equations are given below: m + 4n = 8 m = n - 2 What is the Solution ?
Sophie [7]
M+4n=8
m=n-2
we see that m=n-2
so we can subsitute 'n-2' for m in the first equation
(n-2)+4n=8
n-2+4n=8
5n-2=8
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5n=10
divide by 5
n=2
subsitute
n=2
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the answer is c. 0,2
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3 years ago
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