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
Andrew [12]
3 years ago
12

Write the equation in standard form of a circle with center (-7,2), tangent to the y-axis.

Mathematics
1 answer:
Vesna [10]3 years ago
7 0

Answer:

(x+7)^2+(y-2)^2=7^2

Step-by-step explanation:

Tangent to y-axis means that the side of the circle TOUCHES the y axis.

Since the center is at (-7,2) and it touches the y axis, we can figure out the radius. It goes from (-7,2) to y-axis. Horizontally, the center is 7 units left of y-axis, so that is the radius -----  7 units

The standard form of a circle is:

(x-h)^2+(y-k)^2=r^2

Where

(h,k) is the center

r is the radius

Putting the information into the form, we have:

(x-h)^2+(y-k)^2=r^2\\(x-(-7))^2+(y-(2))^2=7^2\\(x+7)^2+(y-2)^2=7^2

THis is the standard form.

You might be interested in
The manufacturer of a metal stand for home TV sets must be sure that its product will not fail under the weight of the TV. Since
ikadub [295]

Answer:

a) "This is an upper-tail test because the company wants to show the stands will hold 525 pounds (or more) easily."

b) "They will decide the stands are safe when they're not."

c) "They will decide the stands are unsafe when they are in fact safe."

Step-by-step explanation:

a) As the alternative hypothesis Ha is μ>575, the rejection region lays in the upper tail. Then, it is an upper-tail test.

They are testing the claim that the stand supports an average of 575 pounds or more, and are looking for statistical evidence for that claim.

"This is an upper-tail test because the company wants to show the stands will hold 525 pounds (or more) easily."

b)  A Type I error happens when a true null hypothesis is rejected.

This would mean that a stands that doesn't really hold 575 pounds or more has passed the test. The stand would appear more safe than it is.

"They will decide the stands are safe when they're not."

c) A Type II error happens when a false null hypothesis failed to be rejected. In this case, a safe stand, that suports 575 pounds or more, does not pass the test.

"They will decide the stands are unsafe when they are in fact safe."

4 0
3 years ago
Can someone help me please
fredd [130]
The answer to that is C.
6 0
3 years ago
I need helpppp thank you
anyanavicka [17]

Answer:

B. <

Step-by-step explanation:

you dont even have to reduce the fractions to compare the decimals cause 5 is bigger then 4 off the bat.

3 0
3 years ago
Read 2 more answers
Evaluate 3.6/ x for x =2
MakcuM [25]

Answer:

1.8

Step-by-step explanation:

3.6/ x for x =2

3.6/2 = 1.8

8 0
3 years ago
Read 2 more answers
Calvin has 13 coins , all of which are quarters and nickels. The coins are worth $2.45. How many of each coin does Calvin have ?
zalisa [80]

Answer:

Step-by-step explanation:

6 0
3 years ago
Other questions:
  • Step 1: Subtract 3 from both sides of the inequality. Step 2: __________ Step 3: Divide both sides of the inequality by the coef
    14·2 answers
  • Im super confused on how to do this. Please help
    15·1 answer
  • What is the equation of the line that is perpendicular to the line y=-2?
    14·1 answer
  • What is 2(5-n) in a word phrase
    8·1 answer
  • A rattlesnake at a zoo is 5 1/2 feet long. A corn snake at a zoo is 3/4 of that length.
    12·2 answers
  • The interior angles formed by the sides of a hexagon have measures that sum to 720°. What is the measure of angle F?
    15·1 answer
  • It will take an hour for plane A to meet plane B which is flying in the opposite direction. If, in 45 minutes, the distance betw
    12·2 answers
  • Can someone pls solve this
    9·2 answers
  • 6(3u+4) please help I am in a classwork
    14·1 answer
  • A water tanklalready contains
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!