Step by step
Step 1 - -4(5.6)-3(-2.9) {multiply the numbers}. -> -22.4 + 8.7
Step 2 - -22.4 + 8.7 {calculate the sum}
-> -13.7
So the answer is -13.7
Answer:
-6x+13
Step-by-step explanation:
7x+9-13x+4
7x-13x+9+4
-6x+9+4
-6x+13
Answer:
n=-5
Step-by-step explanation:
First, let's write down this inequality:
<span>There are at least 245 students enrolled in the school.
y≥245
This inequality says what the sentence says!
now, the number of teachers must be:
x≥2*(y/25)
(two times the number of groups of students of 25!)
so those two inequalities, taken together will be the answer!
</span>
Answer:
After 5 hours, the amount of bacteria increased: 7800-6000=1800
After 1 hours, the amount of bacteria increased: 1800/5=360
After 18 hours, the amount of bacteria increased: 360*18 = 6480
=> Total amount of bacteria after 13 hours: 6000+6480 =12480