Answer: Rita has $25 saved.
Step-by-step explanation:
You could think about it this way: $69 is $6 less than 3 times the amount of money that she has. So, let's solve this:
1) First you would add $6 to the $69 that the skateboard costs because you need to know what her savings would be if she multiplied it by 3.
$69+$6=$75
2) Now that we know that if we tripled her savings, we would have $75. We can now find out how much she actually has saved up by dividing the total of $75 by 3.
$75÷3=$25
I hope this helped you with your question!
Answer:
71°
Step-by-step explanation:
Since the sum of all the angles in a triangle equal 180°, you would add the two angles you already have (47°+62°=109°). Then you subtract the sum of the two angles you already have from 180° (180°-109°=71°).
Answer:
28
Step-by-step explanation:
-2+9 (4)=7(4)=28
Answer:
a. yes
Step-by-step explanation:
If 16 - u = -4 and u = 20:
16 - 20 = -4
The equaton is correct, therefore the given value of u is the solution to the equation.
The surface area of the model is 144π cm.²
To find the surface area of the sphere, we need to know the formula for the surface area of a sphere. The formula for the surface area of a sphere is 4πr². But, we don't have the radius! We only know the diameter. But, since the d is equal to twice the radius, if the diameter is 12, the radius is 12/2 or 6. Now we can solve.
4 * π * (6)²=
=4 * π * 36=
=144π
That means that the surface area of the model is 144π cm.²