8 times 9 - 7 + 4 times 5
Use PEMDAS. Parentheses, Exponent, Multiply, Divide, Add, Subtract
Multiply:
8 times 9 = 72
4 times 5 = 20
72 - 7 + 20
Add:
72 + 20 = 92
Subtract:
92 - 7 = 85
8 times 9 - 7 + 4 times 5 is equal to 85.
Hi love...
The correct answer after solving for d is D=78. That’s a quick answer, but I can give you steps on how to solve.
1. Simplify both sides of the equation
2. Isolate the variable
3. Simplify
Then you’d have the answer!
Please let me know if you need further assistance! Have a jolly evening.
~Brooke❤️
Consider right triangle ΔABC with legs AC and BC and hypotenuse AB. Draw the altitude CD.
1. Theorem: The length of each leg of a right triangle is the geometric mean of the length of the hypotenuse and the length of the segment of the hypotenuse adjacent to that leg.
According to this theorem,

Let BC=x cm, then AD=BC=x cm and BD=AB-AD=3-x cm. Then

Take positive value x. You get

2. According to the previous theorem,

Then

Answer: 
This solution doesn't need CD=2 cm. Note that if AB=3cm and CD=2cm, then

This means that you cannot find solutions of this equation. Then CD≠2 cm.
Answer:
Step-by-step explanation:
2×radius with pi, 28*pi=28 pi or 87.92
Answer:
Step-by-step explanation:
so first you look it up and if that dont work then u guess