All categories

3 years ago

How do I solve this? I'm so confused on what I'm doing

Mathematics

1 answer:

MakcuM [25]3 years ago

8 0

This is a square means ithas all sides equal
Let say side is x
And diagonal length is given 5
U know something is called pythagorean thoeram
Which says relationship between sides of a right triangle
Square has right triangle each side
So hypotenuse^2=lenghth^2+base^2
Here hypotenuse is diagonal which is given 5
So 5^2=x^2+x^2
25=2x^2
x^2=12.5
x=√12.5=2.5√2
Answer is A

You might be interested in

Can someone explain how to get the right answer thx

nirvana33 [79]

Answer:

x = 20

Step-by-step explanation:

These two angles are equal:

5x + 7 = 6x - 13

Subtract 5x from both sides.

7 = x - 13

Add 13 to both sides.

20 = x

I hope this was helpful to you! If it was, please consider rating, pressing thanks, and marking my answer as 'Brainliest.' It would help a lot. Have a wonderful day.

6 0

3 years ago

(a) For what values of k does the function y = cos kt satisfy the differential equation 4y" = -25y?(b) For those values of k, ve

zalisa [80]

a. $y=\cos kt\implies y''=-k^2\cos kt$

Substituting these into the ODE gives

$-4k^2\cos kt=-25\cos kt\impliesk^2=\dfrac{25}4\implies k=\pm\dfrac52$

b. $y=A\sin kt+B\cos kt\implies y''=-k^2A\sin kt-k^2B\cos kt$

If $k=\dfrac52$ , then

$4\left(-\dfrac{25}4A\sin\dfrac52t-\dfrac{25}4B\cos\dfrac52t\right)=-25\left(\sin\dfrac52t+\cos\dfrac52t\right)$

as required, and the same can be said for $k=-\dfrac52$ . (Note that $\sin(-x)=-\sin x$ and $\cos(-x)=\cos x$ .)

6 0

4 years ago

What is the equation of a line that passes through (4, 3) and has a slope of 2?

KiRa [710]

So right of the bat the equation we know from what's given is y = 2x (+b)
we gotta find out what b is
so we plug the coordinate in
3=8+b.
b=-5
so we put all the pieces back together to get
y = 2x - 5

3 0

4 years ago

Eliza’s parents are installing an above ground swimming pool in their backyard. The pool is a right circular cylinder with a dia

steposvetlana [31]

Answer:

H = 1781

Step-by-step explanation:

First, find the radius which is 9; 18/2. Then use cyclinder formula pi*r^2*h. Substitute values, but replace height with 6 because you are finding volume of water. Equation: pi*9^2*6

6 0

4 years ago

Evaluate ab-0.5bab-0.5ba minus 0 point 5,b when a=1a=1a equals 1 and b=5b=5

schepotkina [342]

Answer:

$2.5$