2 years ago

How many lines of symmetry does a triangle have?

Mathematics

1 answer:

lora16 [44]2 years ago

5 0

It has three lines of symmetry.

You might be interested in

3(3f-2)>5f-3 solve the inequality

qwelly [4]

open () to make 9f-6>5f-3

minus 5f to make 4f-6>-3

add 6 to make 4f>3 so f >3/4

5 0

3 years ago

Read 2 more answers

What is the Radius of a cylindrical water tank that has a circumference of 85 meters?

Tju [1.3M]

C=2pr

r=C/(2p) and we are given C=85 so

r=85/(2p) meters

r≈13.53 meters (to nearest one-hundredth of a meter)

7 0

3 years ago

Read 2 more answers

Stacy borrowed 22 books from the library this summer. She read three books each week, and at the end of the summer, there were 4

tino4ka555 [31]

ㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤ

3 0

2 years ago

Read 2 more answers

House B is a reflection of House A.

Luden [163]

Answer:add all them up !

Step-by-step explanation:

8 0

3 years ago

For what positive values of k does the function y=sin(kt) satisfy the differential equation y''+144y=0 ?

lina2011 [118]

Answer:

The positive value of k that the function y = sin(kt) satisfies the differential equation y'' + 144y = 0 is +12

Step-by-step explanation:

To determine the positive values of k that the function y = sin(kt) satisfy the differential equation y''+144y=0.

First, we will determine y''.

From y = sin(kt)

y' = $\frac{d}{dt}(y)$

y' = $\frac{d}{dt}(sin(kt))\\$

y' = kcos(kt)

Now for y''

y'' = $\frac{d}{dt}(y')$

y'' = $\frac{d}{dt}(kcos(kt))$

y'' = $-k^{2}sin(kt)$

Hence, the equation y'' + 144y = becomes

$-k^{2}sin(kt)$ + $144(sin(kt))$ $= 0$

$(144 - k^{2})(sin(kt)) = 0$

$(144 - k^{2})= 0$

∴ $k^{2} = 144\\$

$k =$ ± $\sqrt{144}\\$

$k =$ ± $12$

∴ $k = +12$ or $-12$

Hence, the positive value of k that the function y = sin(kt) satisfies the differential equation y'' + 144y = 0 is +12

7 0

3 years ago