Answer:
x= -11
Step-by-step explanation:
-2x-6+5x=-39
3x-6=-39
3x=-39+6
3x=-33
x= -11
Answer:
m = 5 n = 
Step-by-step explanation:
5/2x2=5
5/3xsqrt3=5sqrt3/2
Answer:
6.4 minutes, or 6 minutes and 24 seconds
Step-by-step explanation:
She is running 4 laps, so she is running 1600 meters total. If she runs 250 meters per minute, divide 1600 by 250 to determine how many minutes it will take...
1600/250 = 6.4
Which is 6 minutes + 0.4 minutes
*there are 60 seconds in a minute, so the 0.4 represents 40% of another minute. Multiply 60 by 0.4 to see how many seconds this is...
(0.4)60 = 24 seconds,
So she ran the laps in 6 minutes and 24 seconds
Answer:
a = -7/3
Step-by-step explanation:
4 - (3a + 4) = 7
4 - 3a - 4 = 7
-3a = 7
a = -7/3
Answer:
There will be a minimum of 8,100 books with coloured illustrations.
Step-by-step explanation:
Change the percentages to fractions
90% = 9/10
Books with Illustrations: 9/10 of 10,000
Books in Colour: 9/10 of 10,000
Because both events are not mutually exclusive, they can happen at the same time. So multiply their fractions (probabilities).
9/10 * 9/10 =
9 * 9 = 81
10 * 10 = 100
The probability of having a book with coloured illustrations is 81/100.
Find this as a fraction of 10000.
10000 ÷ 100 × 81 = 8,100
