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jeyben [28]
3 years ago
8

Two cars leave Phoenix and travel along roads 90 degrees apart. If Car 1 leaves 30 minutes earlier than Car 2 and averages 42 mp

h and if Car 2 averages 50 mph, how far apart will they be after Car 1 has traveled 3.5 hours?
A:230
B:250
C:210
Mathematics
1 answer:
beks73 [17]3 years ago
8 0

Answer:

C. 210 miles.

Step-by-step explanation:

If Car 1 left 30 minutes earlier

than Car 2 therefore Car 2 traveled 3 hours

compared to Car 1's 3.5 hours

Car 1 traveled 3.5 x 42 mph = 147 miles

Car 2 travelled 3 x 50 mph = 150 miles

The distance between them would be  

√147^2 + 150^2

= 210

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The time that it takes a randomly selected job applicant to perform a certain task has a distribution that can be approximated b
Gala2k [10]

Answer:

214.5 seconds or less time will qualify individuals for such training

Step-by-step explanation:

given that the time that it takes a randomly selected job applicant to perform a certain task has a distribution that can be approximated by a normal distribution with a mean value of 150 sec and a standard deviation of 25 sec.

i.e. X the time that it takes a randomly selected job applicant to perform a certain task is N(150,25)

The fastest 10% are the ones who are above the 90th percentile

We know 90th percentile for Z std normal score is 1.28

Corresponding X score would be

x=\mu+1.28 \sigma\\X= 150+1.28(25)\\= 214.50

Round off to one decimal

214.5 seconds or less time will qualify individuals for such training

3 0
3 years ago
María compró 78 metros de cuerda, ella dividió en 6 partes iguales la cuerda el día martes 8 de mayo ¿Cuántos metros mide cada t
barxatty [35]

Answer:

The length of each piece is 13 m.

Step-by-step explanation:

Maria bought 78 meters of rope, she divided the rope into 6 equal parts on Tuesday, May 8, How many meters is each piece?  

a) Each piece measures 312m

c) Each piece measures 13m

d) each piece mites 92m

b) Each piece measures 9m and 75cm

Total length, L =  78 m

Number of pieces, n = 6

length of each piece,

d = L/n = 78/6 = 13 m

So, the correct option is (c).  

6 0
3 years ago
Help!! Number 39 please
antiseptic1488 [7]
Keep in mind you would need a total of 120 ounces.
A: Corn cereal comes in 12 oz boxes and the person used 5 boxes, thus taking 60 oz away from the total, leaving 60 oz. Next, you’d have to divide 60 oz by 4 (since that’s how many boxes of wheat cereal were used). Resulting in a wheat box being worth 15 ounces!!
B: 12c+ 15w= 120 (c= corn cereal, w= wheat cereal)
C: 5 boxes of corn cereal with 4 boxes of wheat cereal; 0 boxes of corn cereal with 8 boxes of wheat cereal; 10 boxes of corn cereal with 0 boxes of wheat cereal.
8 0
3 years ago
Read 2 more answers
ANSWER ASAP !!!!!!!!!!
tekilochka [14]
Option C is correct or y=3/4x-5. Use the given functions to set up and simplify y=mx+b
to find the equation.
6 0
3 years ago
find the sum of the interior angles of the following polygons.1)Pentagon. 2)hexagon. 3)heptagon. 4)octagon.​
sergejj [24]

Answer:

Sum of interior angles of polygon = (n-2)*180

1) Pentagon:

  • (5-2)*180= 540

2)Hexagon:

  • (6-2)*180= 720

3) Heptagon:

  • (7-2)*180= 900

4) Octagon:

  • (8-2)*180= 1080
3 0
3 years ago
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