Answer:
1/4 chance or 0.25 or 25%
Step-by-step explanation:
One forth of cards in a deck are spades
Answer:
x=12
Step-by-step explanation:
To make these 2 lines perpendicular to each other, one of their angles must be equal to 90 degrees.
Therefore, we can set up an equation with one of the angles:
7x+6=90
7x=84
x=12
The information of the other angle is useless in this case, but we can use it to check by plugging in 12 for x, and seeing if it equals to 90:
8*12-6=96-6=90
Therefore, x=12.
Answer:
85 kilometers is equal to 85 000 meters
Step-by-step explanation:
1 kilometer is equivalent to 1000 meters. Then to convert from kilometers to meters use the following conversion factor

In this case 
Then

Finally 85 kilometers = 85,000 meters
Answer: 7- true 8- true 9- false
Step-by-step explanation:
Answer:
Step-by-step explanation:
You need to analize the figure carefully in order to understand the information given in the exercise.
According to the data given, you know that the lenght of the side BD of the triangle ABD is:

You can notice in the figure the lenght BD is the sum of the lenght BC and the lenght CD.
Knowing that, you can can write the following equation:

Since:

You can make the substitution into
and then solve for "y" in order to find its value.
The result is:
