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SVETLANKA909090 [29]
3 years ago
8

Please help I dont get it :(​

Mathematics
1 answer:
Crazy boy [7]3 years ago
3 0

Answer:the answer is Knowing that 9^2+12^2= 13^2, , draw the 9 cm side and the 12 cm side with a right angle between them. The 13 cm side will fit to form a right triangle. ( C.) boooooooooooooom

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Use the elimination method to solve the system of equations. Choose the correct ordered pair.
ki77a [65]
You answer is A. You have to substitute the values of x and y into the equation.

(3*1)= 4-1
 
4-(2*1)=2

(4,1)
(x,y)
8 0
3 years ago
In a circle a chord 10 inches long is parallel to a tangent and bisects the radius drawn to the point of tangency. How long is t
Lorico [155]
Check the picture below.

keeping in mind that the point of tangency for a radius line and a tangent is alway a right-angle, since the "red" chord is parallel to the "green" tangent line outside, then the chord is cutting the "green" radius there in two equal halves at a right-angle, as you see in the picture.

we know the chord is 10 units long, so 5 + 5, since is perpendicularity with the radius will also cut the chord in two equal halves.

anyhow, all that said, we end up with triangle you see on the right-hand-side, and then we can just use the pythagorean theorem.

\bf \textit{using the pythagorean theorem}
\\\\
c^2=a^2+b^2
\qquad 
\begin{cases}
c=hypotenuse\\
a=adjacent\\
b=opposite\\
-------\\
c=2a\\
a=a\\
b=5
\end{cases}\implies (2a)^2=a^2+5^2

\bf (2^2a^2)=a^2+25\implies 4a^2=a^2+25\implies 3a^2=25
\\\\\\
a^2=\cfrac{25}{3}\implies a=\sqrt{\cfrac{25}{3}}\implies a=\cfrac{\sqrt{25}}{\sqrt{3}}\implies a=\cfrac{5}{\sqrt{3}}
\\\\\\
\textit{and then we can \underline{rationalize the denominator} }
\\\\\\
a=\cfrac{5}{\sqrt{3}}\cdot \cfrac{\sqrt{3}}{\sqrt{3}}\implies a=\cfrac{5\sqrt{3}}{\sqrt{3^2}}\implies a=\cfrac{5\sqrt{3}}{3}

7 0
3 years ago
The sum of two numbers is 7.If one number is subtracted from the​ other, the result is negative 3.Find the numbers.
Natali5045456 [20]
The numbers are 5 and 2.

5 + 2 = 7

5 - 2 = -3
6 0
3 years ago
Read 2 more answers
I WILL MAKE YOUR ANSWER THE BRAINLIEST IF YOU KNOW IT IS RIGHT
Bad White [126]

Answer:

54π

Step-by-step explanation:

To find the volume of a cylinder, you multiply the area of the base times the height.

The formula for the area of a circle is πr², so the base is 9π units².

Multiplying that by the height (6 units) gives you 54π units³.

5 0
3 years ago
Read 2 more answers
When you start from a given set of rules and conditions and determine what must be true you are using _ reasoning
asambeis [7]

Answer:

Deductive

Step-by-step explanation:

4 0
3 years ago
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