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nlexa [21]
3 years ago
11

How to do this question plz answer me step by step plzz plz ​

Mathematics
2 answers:
weqwewe [10]3 years ago
7 0

Answer:

20π cm

Step-by-step explanation:

The circumference (C) of a circle is calculated as

C = 2πr ( where r is the radius )

Here r = 10 , thus

C = 2π × 10 = 20π cm

Bumek [7]3 years ago
7 0

Answer:

hope it helps

Step-by-step explanation:

circumference of a circle = 2*pi*r = 2*pi*10 =20picm

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Find an equation of the tangent line to y=x²-4x at the point (3,-3)
ludmilkaskok [199]

Answer:

Well first I think you have to get rid of the exponent then get rid of the x-values then plot the point. I think

Step-by-step explanation:

7 0
4 years ago
If a and B are the zeros of the quadratic polynomial f(x) = x2- 5x + 4 find the value of 1/a+1/b-2ab
bearhunter [10]

Answer:

<h2>-27/4</h2>

Step-by-step explanation:

Given the quadratic polynomial given as g(x) = x²- 5x + 4, the zeros of the quadratic polynomial occurs at g(x) = 0 such that x²- 5x + 4 = 0.

Factorizing the resulting equation to get the roots

x²- 5x + 4 = 0

(x²- x)-(4 x + 4) = 0

x(x-1)-4(x-1) = 0

(x-1)(x-4) = 0

x-1 = 0 and x-4 = 0

x = 1 and x = 4

Since a and b are known to be the root then we can say a = 1 and b =4

Substituting the given values into the equation  1/a+1/b-2 ab , we will have;

= 1/1 + 1/4 - 2*1*4

= 1 + 1/4 - 8

= 5/4 - 8

Find the Lowest common multiple

= (5-32)/4

= -27/4

<em>Hence the required value is -27/4</em>

5 0
4 years ago
Sue solved an equation incorrectly, as shown below:
antoniya [11.8K]
She did not divide 28 by7
8 0
4 years ago
I don’t know how to figure out the ratio of the areas. The area for HGEF is 60.5 (121/2) and the area for JKLM is 378.125 (3025/
natima [27]

Answer:

25 : 4

Step-by-step explanation:

Given 2 similar figures with ratio of sides = a : b , then

ratio of area = a² : b²

For the given figures the ratio of corresponding sides is

JK : EF = 20 : 8 = 5 : 2 , thus

ratio of areas = 5² : 2² = 25 : 4

3 0
3 years ago
I d k man<br> here something easy<br> x + 5 = 10<br> x = ?
d1i1m1o1n [39]

Answer:

x = 5

Step-by-step explanation:

x + 5 = 10

<u>    -5     -5</u>

x = 5

<em><u>Hope this helped! Have a nice day! Plz mark as brainliest!!!</u></em>

<em><u>-XxDeathshotxX</u></em>

7 0
3 years ago
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