Answer:
-8
Step-by-step explanation:
I looked it up on ma th way like the previous user said and got -8.
Answer:
Yes, your answers are correct!
Step-by-step explanation:
Answer:
Expression: p = 320 x 1.2
Your price: $384
Step-by-step explanation:
Finding 20% is the same as multiplying that number by 0.2 adding it on to the original number. This can also be represented as multiplying by 1.2.
This means the expression is p = 320 x 1.2, where p is the new price.
This gives you $384.
50= 4x + x
50=5x
50÷5=x
x=10
She bought 10 green apples
She bought 40 red apples
40-10=30
She bought 30 more red apples than green apples
Answer:
8.1
Step-by-step explanation:
Use Pythagoras to find the length of BD- 7.5^2 +5^2=81.25
The square root of 81.25 is 9.01
BD-9.01 cm
Then use the cos rule to find BC.
c=a2+b2﹣2abcosγ=9.012+132﹣2·9.01·13·cos(38°)≈8.09819(square root)
round to 8.1
