ANSWER: a=12 b=15
Explanation: (look at work below)
4a + 1b = 63 (eq1)
5a + 3b = 105 (eq2)
-12a + -3b = -189 (subt. eq1 from eq2)
————————-
-7a = -84
a = 12
4(12) + 1b = 63 (plug in the a value)
48 + 1b = 63
b = 15
Answer: Option D
D. 
; 
Step-by-step explanation:
We know that the cost of preschool is $ 45 per day plus a monthly fee of $ 70.
We also know that a total of $ 880 was paid last month
To write an equation that represents this situation, let us call "d" the number of days that Barry attends school
So the cost was:
Now we solve the equation for the variable d
Therefore answer is the option D
Patrick because he can run 1 lap in 90 seconds
Yes! 40:70 can be simplified! A ratio can be simplified if both numbers have a GCF that is not 1. Looking at 40 and 70, we see that they have a GCF of 10. That means that to simplify 40:70, we need to divide both numbers by 10. 40/10 = 4, and 70/10 = 7, so that means that our simplified ratio is 4:7.
Answer:
Rational
please put me as brainliest
Step-by-step explanation:
Here 3 is recurring , so from statement 1) 0.3333 or 1/3 is a rational number. And also 0.3333 is non-terminating as the decimal is not ending or the remainder for 1/3 is not zero
