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kari74 [83]
3 years ago
15

Given the conditional statement:

Mathematics
1 answer:
pogonyaev3 years ago
6 0
Seodosieodoososoeoer dodostvxdhffcoxoddoodododdododod
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A train is traveling at a constant speed of 90 miles per hour. How many feet does it travel in 10 seconds? Remember that 1 mile
Flauer [41]

Hi

1 mile = 5280 feet  

at  90 mile per hour, you have  5280 *90  = 475 200 feets  

an hour is  60*60 = 3600 second  

so in 1 second the train travel  :  475 200 /3600 = 4752 /36 = 132 feets

so in 10 seconds  :  132*10 = 1320 feets.

7 0
3 years ago
The known number in an algebraic expression is what
Snowcat [4.5K]
integer. I think ...
3 0
3 years ago
A rental car costs $65.95 if 30 miles are driven and $75.95 if 50 miles are driven. Construct
Mazyrski [523]

Answer:

y = 0.5x + 50.95

Step-by-step explanation:

Given y is total cost while x is total miles

Slope: m = (y2-y1)/(x2-x1)

m = (75.95-65.95)/(50-30) = 10/20 = 0.5

y = mx + b

y = 0.5x + b

75.95 = 0.5(50) + b

b = 50.95

Slope intercept form: y = 0.5x + 50.95

4 0
3 years ago
Which of the following equations have infinitely many solutions?
Svetllana [295]

Answer:

Choice A

Step-by-step explanation:

In each case, each equation has an equation of a line in y = mx + b form equaling another equation of a line in y = mx + b form. If the two sides are equal, it is the same equation, there are infinitely many solutions. If the sides are different, then if the slopes are different, the lines intersect at one point, and there is exactly 1 solution. If the slopes are equal, the lines are parallel, and there is no solution.

(Choice A) -10x-10=-10x-10

In Choice A, both sides of the equation are equal, so there are infinitely many solutions.

(Choice B) 10x-10=-10x+10

(Choice C) 10x-10=-10x-10

(Choice D) -10x-10=-10x+10

In choices B through D, the two sides are not equal, so there is either 1 solution (B and C since they have different slopes) or no solution (D since the slopes are equal).

3 0
3 years ago
Expand and simplify (3a + 4)(3a + 4).
alekssr [168]

Answer:

9 a²+24a+16

Step-by-step explanation:

hope it's helpful to you ☺️

3 0
3 years ago
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