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labwork [276]
4 years ago
7

Whats the value of y 2y + 15 = 4y - 45

Mathematics
2 answers:
kati45 [8]4 years ago
8 0

Answer:

\boxed{\bold{y=30}}

Step By Step Explanation:

[ Step One ] Subtract 15 From Both Sides

\bold{2y+15-15=4y-45-15}

[ Step Two ] Simplify

\bold{2y=4y-60}

[ Step Three ] Subtract 4y From Both Sides

\bold{2y-4y=4y-60-4y}

[ Step Four ] Simplify

\bold{-2y=-60}

[ Step Five ] Divide Both Sides By -2

\bold{\frac{-2y}{-2}=\frac{-60}{-2}}

[ Step Six ] Simplify

\bold{y=30}

Rudiy274 years ago
3 0
The answer is 30 you don’t even need this app to answer that question use photo math
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Determine if line AB is tangent to the circle. Please help!!
Ugo [173]

Answer:

B. Tangent

Step-by-step explanation:

Tangent always makes 90 degree angle with the radius. Now in triangle let's see if it's right angled triangle or not.

To confirm if it's a right angled triangle it should follow Pythagoras Theorem.

Which states square of hypotenuse = sum of squares of other two legs

12 {}^{2}  + 16 {}^{2}  = 20 { }^{2}  \\ 144 + 256 = 400 \\ 400 = 400

it proves that it's a right angled triangle. Hence AB is a tangent to circle.

7 0
3 years ago
Use the above figure to answer the question. How long is arc ACB if the radius of the circle is 6? Round your answer to two deci
Svet_ta [14]
After a thorough research, there exists the same question that has the following choices.

A. 6.29 
<span>B. 12.57
</span><span>C. 18.86
</span><span>D. 25.13</span>

The correct answer is letter B 12. 57
First, we need to get the circumference
C = 2*pi*r
C = 12 pi
360/ 60+60 = 360/120 = 3
12 pi / 3 = 4 pi = 4 x 3.1415 = 12.57


7 0
4 years ago
One leg of a right triangle is 7 units long, and its hypotenuse is 16 units long. What is the length of the other leg? Round to
NemiM [27]

Answer:

7^{2} + x^{2} = 16^{2}

49+x^2=256

x^2=207

x=14.387=14

4 0
1 year ago
The area of a triangular sign is 54ft². If the base of the sign measures 12ft, what is the height of the sign?
LuckyWell [14K]

Area of a Triangle Formula:

A=(1/2)base*height

A=54

base=12

Fill in

54=(1/2)*12*h

Solve for h

5 0
3 years ago
Read 2 more answers
Do you know the answer to this
ludmilkaskok [199]

Answer:

4x^2y\sqrt[4]{3y}

Step-by-step explanation:

\sqrt[4]{768x^8y^5} =

= \sqrt[4]{256 \times 3(x^2)^4y^4y}

= \sqrt[4]{4^4 \times 3(x^2)^4y^4y}

= 4x^2y\sqrt[4]{3y}

8 0
2 years ago
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