Answer:
-6
Step-by-step explanation:
Answer:
<h2>B.</h2>
Step-by-step explanation:
If the given right triangles are similar, that meanst they have a ration in common, that is, one of them can be double size the other one. In other words, they are related by a scale ratio.
Notice, that one hypothenuse is double the other one, that is, 10 is double than 5. Also, 8 is double than 4. This means the scale factor is 2, one triangle has double size than the other.
Therefore, the proportion that relates these triangles is
![\frac{10}{5} =\frac{8}{4}=2](https://tex.z-dn.net/?f=%5Cfrac%7B10%7D%7B5%7D%20%3D%5Cfrac%7B8%7D%7B4%7D%3D2)
or
![\frac{4}{8}=\frac{5}{10}=\frac{1}{2}](https://tex.z-dn.net/?f=%5Cfrac%7B4%7D%7B8%7D%3D%5Cfrac%7B5%7D%7B10%7D%3D%5Cfrac%7B1%7D%7B2%7D)
Therefore, the right answer is B.
To answer the question above, substitute the values of the variables x, y and z given to the equation.
2x² - 2(z^4)y² - x²(z^4)
2(-4)² -2(2^2)(3²) - (-4)²(2^4) = -296
Thus, the numerical answer to the question above is -296.
Answer:
Width is 20cm
Step-by-step explanation:
Step one:
Given data
let the width be x
W= x
L= x+5
P= 90
Step two:
The expression for the perimeter is
P= 2L+2W
90= 2*x+2(x+5)
90= 2x+2x+10
collect like terms
90-10=4x
80= 4x
divide both sides by 4
x= 80/4
x= 20
Ok so if you are rounding it to the nearest tenths place the answer would be 6
hope that's right!!