Answer:
Step-by-step explanation:
P=a+b+c
Right scalene triangle.
Sides: a = 21 b = 8 c = 22.472
Area: T = 84
Perimeter: p = 51.472
Semiperimeter: s = 25.736
Angle ∠ A = α = 69.146° = 69°8'44″ = 1.207 rad
Angle ∠ B = β = 20.854° = 20°51'16″ = 0.364 rad
Angle ∠ C = γ = 90° = 1.571 rad
Height: ha = 8
Height: hb = 21
Height: hc = 7.476
Median: ma = 13.2
Median: mb = 21.378
Median: mc = 11.236
Inradius: r = 3.264
Circumradius: R = 11.236
Vertex coordinates: A[22.472; 0] B[0; 0] C[19.624; 7.476]
Centroid: CG[14.032; 2.492]
Coordinates of the circumscribed circle: U[11.236; -0]
Coordinates of the inscribed circle: I[17.736; 3.264]
Exterior (or external, outer) angles of the triangle:
∠ A' = α' = 110.854° = 110°51'16″ = 1.207 rad
∠ B' = β' = 159.146° = 159°8'44″ = 0.364 rad
∠ C' = γ' = 90° = 1.571 rad
Lets take a look at the options first.
option 1 and option 4 are not possible as (8x) (8x) would give us 64x^2, which is not what we want.
we’re left with option 2 & 3. when expanded, option 2 will look like :
16x^2 - 40x - 10x + 25
= 16x^2 - 50x + 25
however, we do not want the 50x. so the answer is option 3, (4x-5) (4x+5)
if you don’t want to find the answer using expanding, there is also another method of expanding.
(a+b)^2 = a^2 - b^2
in this case, 16x^2 will be a^2 and 25 will be b^2. not sure whether you’ve learn this but yea.
Answer:
x= -1/5y+9/5
Step-by-step explanation:
5x+y=9
Step 1
First you need to add -y to both sides, basically subtracting y
5x+y-y= 9-y
Step 2
Divide both sides by 5, or multiply by 1/5. You want to do this because to cancel out 5, so you multiply the reciprocal, or divide the constant.
1/5*5x=-y+9/5
Then, you will get the answer
Hope this helps, sorry if it is wrong, I am just 4th grade :(
But I am sure this is correct :)
The greatest common factor is 3y.
9 - 1,3,9
12 -1,3,4,12
There is a y in both terms.
So, 3y is the greatest common factor.
Answer:
7 hours and 9 minutes
Step-by-step explanation:
4 hours and 33 minutes is 273 minutes
7 m/s —> 273 minutes
11 m/s —> M
Criss cross to get M
11x273= 7M
3003=7M
M=429 minutes
==> 429 minutes is 7 hours and 9 minutes