Answer:
800. Here's why:
Step-by-step explanation:
This indicats that 440 students make up 55% of the 6th grade population. We can write this as
55/440.
We also know that 'x' total students make up 100% of the 6th-grade population, so we can write this as
100/x.
55/440 must be equal to 100/x. When cross multiplied, it becomes 50x=44000. If we divided each side by 50, we'll find that x=880. Therefore, there are 800 6th graders
Answer: A. 72
Explanation: 15 + 25 + 10 = Total of marbles = 50
10/50 10 Marbles out of 50 total marbles
10/50 = ?/360
360 / 50 = 7.2
7.2*10= 72
72/360 so yeah it’s 72
Answer:
4x + 10y = 36 ≡ to 2x + 5y = 18
As you can see, the the coefficients on the first one are double those in the second.
12x - 9y = -60 ≡ to -4x + 3y = 20
In this case, the terms in the first one are all the same, but multiplied by -3
And by simple elimination we can say:
-24x - 8y = 40 ≡ -6x - 2y = 10
In this case, the terms of the first equation are equal to those of the latter, but all multiplied by 4.
7 * 9 = 63
add four 0's from 700 and 900
630,000
Answer:
Download photomath it'll solve everything 4 u