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Alborosie
4 years ago
11

While driving from​ Chicago, Brent had a visibility problem due to the fog. After 1 1/2

Mathematics
1 answer:
liq [111]4 years ago
5 0
1) Let x be the original speed that he was driving; 

x mph ---> 1.5 hours 
x+44 mph --> 2.5 hours 

1.5x + 2.5(x+44)=206 
1.5x+2.5x+110=206 
4x=206-110 
4x=96 
x=24 
Therefore, he was travelling at 24 mph in the fog. 

2) Let x be the speed of 1 snail, 
The other snail travels at the speed of x+1 cm/min 

23x+23(x+1)=391 <-- solve for x 
23x+23x+23=391 
46x=368 
x=368/46 
x=8 

Therefore one of the snail travels at 8 cm/min while the other goes at 9 cm/min 

7) Let x be one crew 
Then the other crew would be working at x+0.5 

3.2x+3.2(x0.5)=8 <-- solve for x 
3.2x+1.6x=8 
4.8x=8 
x=8/4.8 
x=1.6666 or 1.7 miles 

Therefore, one of the crew does 1.7 miles per day and the other crew does (0.5*1.7)=0.85 miles

Hope I helped :) 
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Answer:

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3 years ago
Make a table of ordered pairs for the equation. y= 1/2x − 3
Dennis_Churaev [7]

Answer:


Step-by-step explanation:

Please enclose the fractional coefficient inside parentheses:  y= (1/2x) − 3 for greater clarity.

Make a table of ordered pairs:

x    y = (1/2)x - 3

0                   -3

1            (1/2)(1) - 3 = -2 1/2

3           (1/2)(3) - 3 = -3/2

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3 years ago
Whats the Axis of Symmetry? willing to give 15 points !!
nydimaria [60]

The axis of symmetry of a parabola in the form

y=ax^2+bx+c

is a vertical line

x=k

where k is the x coordinate of the vertex of the parabola.

The x coordinate of the vertex of the parabola is given by

-\dfrac{b}{2a}

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3 years ago
20 POINTS PLZ HELP!!!!!!!!!!!!!!!!!!!!
mars1129 [50]

Answer:

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Step-by-step explanation:

First, you have to combine like terms: 5a and 3a, -5, -15, 6, and 4.

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4 years ago
Read 2 more answers
Gary has (20x + 7) dollars. Gary decides to buy two pairs of jeans. Each pair of jeans costs (2x - 3) dollars.
hichkok12 [17]

Complete question :

Gary has (20x + 7) dollars. Gary decides to buy two pairs of jeans. Each pair of jeans costs (2x - 3) dollars. write an expression that represents how much money gary will have left over after the purchase then simplify your expression

Answer:

$(16x - 1)

Step-by-step explanation:

Given that:

Amount Gary has = $(20x + 7)

Price per pair of jeans = $(2x - 3)

Number of pairs = 2

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Amount left after purchase :

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20x - 7 - 4x + 6

20x - 4x - 7 + 6

$(16x - 1)

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3 years ago
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