Answer:
Mark has 24
Don has 79
Step-by-step explanation:
Let x = marbles mark has
don has 3x+7
Together they have 103
mark + don = 103
x+ (3x+7) = 103
Combine like terms
4x+7 = 103
Subtract 7
4x = 96
Divide by 4
x = 96/4
x =24
Mark has 24
Don has 103 -24
Done has 79
Answer:
1. 243
2. 262,144 divided by 64 = 4096 = 8^4
3. 8^8
4. 4^5
5. 7^6
6. 10^0
7. 1/4^3
8. C or A but I think most likely C
10. 2(4)^-2
A 1:4
Find a common factor. In this case it’s 15
15/15=1 60/15=4
Therefore the answer Is 1:4
Answer:
10 cm
Step-by-step explanation:
The diagonal d divides the rectangle into 2 right triangles with legs 8 and 6 and hypotenuse d
Using Pythagoras' identity in one of the right triangles, then
d² = 8² + 6² = 64 + 36 = 100 ( take square root of both sides )
d = = 10 cm