1. x/9+10=11 (x=89)
2. 3x-5=-2 (x=1)
3. 2x+15=-23 (x=19)
4. 5x-4=16 (x=4)
5. -8x+9=-7 (x=2)
6. 10x-12=-28 (x=1.6)
7. 3x+7=52 (x=15)
8. 5x-11=19 (x=6)
9. 4x+13=-91 (x=-26)
10. 2x-7=43 (x=-19)
Answer:
In mathematics, a real number is a value of a continuous quantity that can represent a distance along a line.
Answer:
21
Step-by-step explanation:
First you have to solve for x in the equation 2x + 9 = 23. Cancel 9 on both sides. You cancel 9 by subtracting 9 on the left side and on the right side:
23 - 9 = 14.
Now, you have 2x = 14. To isolate the variable, divide by 2 to cancel out 2.
14 / 2 = 7.
This will give you x = 7. Now that you know what x equals, you can substitute x in 3x. This would make it 3(7), or in other words 3 x 7.
3 x 7 = 21.
This means that 3x would be equal to 21. Hope it helps!
Hey there!
If she missed 4 problems, and that took off 20%, that means 4 is 20% of the total items.
20% is the same as 1/5 of the total amount, since there are 5 20s in 100.
So, we can simply multiply 4 by 5 to get the total amount of problems.
4 x 5 = 20
This means there were 20 problems on the test.
Hope this helps!
Answer:
4:5
Step-by-step explanation:
1HR=60 MIN
48 MIN - 60MIN
48/60=4/5
4/5=4:5
