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
Bogdan [553]
3 years ago
5

What is the radius of the circle given by the equation x^2+y^2=49?

Mathematics
2 answers:
viktelen [127]3 years ago
8 0

The answer is "C. 7."


The equation of a circle is (x-h)²+(y-k)²=r². r² represents the radius squared, or multiplied by itself. 7 multiplied by 7 is equal to 49, so the radius of the circle would be 7.

Marta_Voda [28]3 years ago
7 0

Formula of the circle


(x-a)² +(y-b)² = r²,


where r is a radius, (a,b) - coordinates of the center.

So,

x² + y² = 49

(x-0)² + (y-0)² = 49.

Center  of this circle has coordinates (0,0).

x² + y² = 7²

r = 7


Answer is C.7.

You might be interested in
In sentence 7, the phrase by all accounts is best
hram777 [196]

<u>In sentence 7, the </u><u>phrase</u><u> by all accounts is best replaced by </u><u>however.</u>

Correct option is A

  • The sentence that precedes 7 states something that is in contrast with it.
  • Therefore 'by all accounts' in sentence should be changed to 'however' as it is generally used to present something that is different from or contrasts with the previous statement.
  • Thus A is the best answer. The other options are incorrect because they do not convey the contrast that is required in the given context.

What is a phrase in grammar?

  • In syntax and grammar, a phrase is a group of words which act together as a grammatical unit.
  • For instance, the English expression "the very happy squirrel" is a noun phrase which contains the adjective phrase "very happy".
  • Phrases can consist of a single word or a complete sentence.

Learn more about Phrases

brainly.com/question/15806900

#SPJ4

5 0
1 year ago
The cost, C. of producing coolers, x, is modeled by the equation C = 0.005x2 - 0.3x + 17. How many coolers are
melamori03 [73]

Answer:

66 coolers

Step-by-step explanation:

C = 0.005x² - 0.3x + 17

When C = $19

19 = 0.005x² - 0.3x + 17

19 - 17 = 0.005x² - 0.3x

2 = 0.005x² - 0.3x

0.005x² - 0.3x - 2 = 0

x = -b ± √b² - 4ac / 2a

= -(-0.3) ± √-0.3² - 4*0.005*-2 / 2*0.005

= 0.3 ± √ 0.09 - (-0.04) / 0.01

= 0.3 ± √ 0.09 + 0.04 / 0.01

= 0.3 ± √ 0.13 / 0.01

= 0.3/0.01 ± √0.13/0.01

= 30 ± 0.36/0.01

x = 30 ± 36

x = 30 + 36 or 30 - 36

x = 66 or -6

Number of coolers can not be negative

Therefore, number of coolers produced when the cost is $19

is 66 coolers

3 0
3 years ago
-x&lt;-29 please solve
tangare [24]

Answer:

x>29

Step-by-step explanation:

Multiply each term by -1

-x * -1 < -29 * -1

x > 29

6 0
3 years ago
Read 2 more answers
Q3) f(x) 2x^2 - 5x, g(x) = 3x^3 find g(4x)
mrs_skeptik [129]

Answer:

g(4x) = 192x^3

Step-by-step explanation:

For this problem, f(x) is irrelevant since we are simply are dealing with g(x).  We will simply replace the value of x in g(x) with 4x.  So let's do that.

g(x) = 3x^3

g(4x) = 3(4x)^3

g(4x) = 3(4^3)(x^3)

g(4x) = 3(64)(x^3)

g(4x) = 192x^3

Hence, g(4x) is 192x^3.

Cheers.

4 0
3 years ago
Please help me im really bad only higher grades can answer
myrzilka [38]
Positive sorry if it’s wrong good luck
3 0
3 years ago
Read 2 more answers
Other questions:
  • FIND THE VOLUME OF THE CONE!
    8·2 answers
  • Find the cosine of angle Z.<br> 1. 4/5<br> 2. 2/5<br> 3. 3/5<br> 4. 5/4
    13·1 answer
  • Simplify 70 - 4 x (4 - 1)^2
    5·1 answer
  • What is the value of x?
    8·1 answer
  • 5. What is the value of x?
    8·1 answer
  • Three lines intersect at a common point. In the figure below, m∠1=x°, m∠2=2x°, and m∠3=75°.
    9·1 answer
  • Use the discriminant to describe the roots of each equation. Then select the best description.
    10·2 answers
  • What Is 21+21,000 Please tell me what the answer
    8·1 answer
  • During a basketball game, Bari scored 28 points. During the same game, Denay scored
    12·1 answer
  • A. 2miles<br> B.200 miles<br> C.6 miles <br> Please help
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!