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Lorico [155]
3 years ago
10

What formula can we use to find the circumference of a circle?

Mathematics
2 answers:
Assoli18 [71]3 years ago
6 0

Answer:

B plz mrk brainliest

Step-by-step explanation:

Olenka [21]3 years ago
5 0

Answer:

we could use the formula C= π2r

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Solve 2x^2<br> + x - 4= 0.<br> x2 +<br> = 0<br> DONE
inessss [21]

\\ \sf\longmapsto 2x^2+x-4=0

\\ \sf\longmapsto 2x^2+x=4

\\ \sf\longmapsto 8(2x^2+x=4)

\\ \sf\longmapsto 16x^2+8x=32

\\ \sf\longmapsto (4x)^2+2(4x)(1)=32

\\ \sf\longmapsto 4x^2+2(4x)(1)+1^2=32+1^2

\\ \sf\longmapsto (4x+1)^2=33

\\ \sf\longmapsto 4x+1=\pm\sqrt{33}

\\ \sf\longmapsto 4x=-1\pm\sqrt{33}

\\ \sf\longmapsto x=\dfrac{-1\pm\sqrt{33}}{4}

8 0
3 years ago
**At noon the minute and the hour hands overlap. When will it happen next?
Svetllana [295]

Answer: At 01:05 p.m. it will overlap again.

Explanation:

Since there are 22 times in a day the minute and the hour hands overlap.

During the first half of the day , it overlaps 11 times and during the rest of the day it overlap 11 more times.

At noon, the minute and the hour hands overlap and after that it will happen at 01:05 p.m.

Since the minute hand completes a full circle in one hour, so it forms 6 degrees per minute .

So, at 01:05 p.m. it will overlap again.

7 0
3 years ago
HELP it's a maths question worth 4 marks
Ksenya-84 [330]

a = 3, b= - 4 and c = - 4

expand the left side using FOIL

(2x + 1)(ax + b) = 2ax² + 2bx + ax + b = 2ax² + x(2b + a) + b

compare the coefficients of expressions on left and right sides.

compare 2ax² + x(2b +a) + b with 6x² - 5x + c

coefficients of x² terms → 2a = 6 ⇒ a = 3

coefficients of x terms → 2b + a = - 5 → 2b + 3 = - 5 → 2b = - 8 ⇒ b = - 4

constant terms c = b = - 4


4 0
3 years ago
Please refer to the image
Dafna11 [192]
I do not know what to answer here, you did not include the question itself.
5 0
3 years ago
#1: Simplify the expression below. Type your answer as an integer.<br> 7 + 1 - 18 : 6
myrzilka [38]

Answer:

5

Step-by-step explanation:

<u>Steps of calculation:</u>

  • 7 + 1 - 18 : 6 =
  • 7 + 1 - 3 =
  • 8 - 3 =
  • 5

Answer is 5

8 0
3 years ago
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