Answer:
15 degrees
X is an Acute Angle
Step-by-step explanation:
x+ 75 = 90
x =15
Answer:
Here we can use the relationship:
Distance = time*speed.
When Jose walks, his speed is 4 mph.
Then if he walks for X hours, the distance that he will travel is:
D = 4mph*X
When Jose runs, his speed is 8mph.
Then if he runs for T hours, the distance that he will travel is:
D´ = 8mph*Y
And we know that he travels in total 20 miles, then we must have that:
D + D´= 20mi
This leads to:
4mph*X + 8mph*Y = 20mi
Where X is the time that he walked, and Y is the time that he runed.
Then the equation that represents the different amounts of times that Jose runs and walks is:
4mph*X + 8mph*Y = 20mi
Where we can not really find the solutions for Y and X, because there is only one equation and two variables.
-12, sorry but I’m not really in the mood to explain but Bc they’re both negative you add them.
One sub costs $4.5 and one cookie costs $0.75 or 75 cents
Step-by-step explanation:
Let s be the cost of one sub
and
c be the cost of one cookie
Then according to given statements
"The cost of 3 subs and 7 cookies is $18.75"

"Five subs and 21 cookies cost $38.25"

Multiplying eqn 1 by 3

Subtracting Eqn 2 from Eqn 3

Dividing both sides by 4

Putting s=4.5 in Eqn 1

Dividing both sides by 7

So,
One sub costs $4.5 and one cookie costs $0.75 or 75 cents
Keywords: Linear Equations, Variables
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