1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
7nadin3 [17]
2 years ago
13

Help please!! Solve for y.

Mathematics
1 answer:
Nimfa-mama [501]2 years ago
7 0

Answer:

y = 3\sqrt{7}

Step-by-step explanation:

The 2 right triangles inside the right triangle are similar, then ratios of corresponding sides are equal, that is

\frac{y}{9} = \frac{7}{y} ( cross- multiply )

y² = 63 ( take the square root of both sides )

y = \sqrt{63} = 3\sqrt{7}

You might be interested in
What type of number has exactly two factors
yarga [219]

I'm pretty sure it's a prime number.


3 0
3 years ago
Read 2 more answers
Multiply each equation by a constant that would help to eliminate the y terms.
Zinaida [17]

Answer:

Therefore the required resulting equation is

6x-15y=-63\\-15x+15y=90

6 x minus 15 y = negative 63.

Negative 15 x + 15 y = 90

Step-by-step explanation:

Given:

2x-5y=-21         ......................Equation ( 1 )

3x-3y=-18         ......................Equation ( 2 )

To Find:

Expression after multiplying to eliminate y term,

Solution:

So to eliminate 'y' term we need to multiply equation 1 by a constant 3 and equation 2 by a constant -5,  such that equations  becomes

3(2x-5y)=3\times -21\\\\6x-15y=-63 .....( 1 )

-5(3x-3y)=-5\times -18\\\\-15x+15y=90  .....( 2 )

so now by adding new equation one and two we can eliminate y term that means -15y and +15y will get cancel,

Therefore the required resulting equation is

6x-15y=-63\\-15x+15y=90

6 x minus 15 y = negative 63.

Negative 15 x + 15 y = 90

3 0
3 years ago
Read 2 more answers
Which equation shows the commutative property of addition?
kipiarov [429]

Answer:

C

Step-by-step explanation:

7 0
2 years ago
I need help on this question
kherson [118]

Answer:

A

Step-by-step explanation:

Just put x = 80 and y = 210 into the equation...

or put x = 40, y = 90.

A:

210 - 90 = 3(80-40)

120 = 120√

B:

210 + 90 = 3(80+40)

300 = 360×

C:

210 - 90 = 2.6(80-40)

120 = 104×

D:

210 + 90 = 2.6(80+40)

300 = 312×

8 0
3 years ago
Triangle A′B′C′ is the image of triangle ABC after a dilation.
IceJOKER [234]

Answer:

3

Step-by-step explanation:

could the length of the first triangle to the length of the second triangle

7 0
2 years ago
Other questions:
  • Max packs cereal boxes into a larger box. The volume of each cereal box is 175 cubic inches. What is approximiate volume of the
    14·1 answer
  • What is the area of the following circle
    6·1 answer
  • Write all the numbers that round to 50 80 and 240
    11·2 answers
  • Express 6/25 as a decimal fracture​
    15·2 answers
  • Discount on LCD TV is $240.<br><br> Sale Price is $1575.00<br><br> What was the list price?
    10·1 answer
  • HELP! What is VT?<br><br><br> Geometry (10 pts)
    10·1 answer
  • The elevation E, in meters, above sea level at which the boiling point of a certain liquid ist degrees Celsius is given by the f
    13·1 answer
  • (I’ll give brainliest)Find the area of the circle below leave your answer in terms of Pi
    8·1 answer
  • What’s the answer hurry
    15·1 answer
  • Find the sum of the measures​
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!