Answer:
or
Step-by-step explanation:
You need to complete the square before you can take the square root of both sides.
Subtract 10 from both sides.
To complete the square, you need to add the square of half of the x-term coefficient to both sides.
The x-term coefficient is 7. Half of that is 7/2. Square it to get 49/4. Now we add 49/4 to both sides of the equation.
Now we use the square root property, if
, then
or
or
or
Answer:
Solve for be is 56
Step-by-step explanation:
That the answer
Hi there, please give me the brandies the answer if I helped. The photo is attached below.
Answer:
Volume = 35185.8
Step-by-step explanation:
Recall the formula for the volume of a cone:
Where R is the radius of the cone's circular base (in your case half of 80 km,(that is 40 km)
And h stands for the height of the cone (in your case 21 km)
We replace such in the formula and calculate its final value:
We round it to the number of decimals your problem request (let's say to one decimal) and also include the cubic units:
Volume = 35185.8
Step-by-step explanation:
Let ABC be a right angled triangle where there's a right angle in B . Let the measure of the angle BAC be ∅. So,
Also,
Now adding the values of sin^2∅& cos^2∅,
But we know that
by applying Pythagorean Theorem
So ,