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3 years ago

(marking brainliest or however you spell it)

Mathematics

1 answer:

Elodia [21]3 years ago

8 0

Answer:

6.4

Step-by-step explanation:

To do this you just have to multiply 40 by 2 to get 80 and than divide by 12.5 and you get 6.4

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(sin30°+cos60°) (tan60°-sec30°)<br>

olga_2 [115]

Answer:

$\frac{ \sqrt{3} }{3}$

Step-by-step explanation:

$(sin30 + \cos(60) )( \tan(60) - \sec(30)$

$( \frac{1}{2} + \frac{1}{2} )( \sqrt{3} - \frac{2 \sqrt{3} }{3})$

$(1)( \sqrt{3} )$ over 3

$= \frac{ \sqrt{3} }{3}$

5 0

3 years ago

Read 2 more answers

Finding the roots by completing the square

Andrej [43]

For y=x^2-6x-11

complete the square

so roots
set y=0
0=x^2-6x-11

group x terms
0=(x^2-6x)-11
take 1/2 of linear coefient (-6) and square it
-6/2=-3, (-3)^2=9
add positive and neative to inside of parenthasees
0=(x^2-6x+9-9)-11
complete square
0=((x-3)^2-9)-11
expand
0=(x-3)^2-9-11
0=(x-3)^2-20
add 20 to both sides
20=(x-3)^2
sqrt both sides
remember positive and negative roots

+/-2√5=x-3
add 3 to both sides
3+/-2√5=x

so
x=3+2√5 and 3-2√5

6 0

3 years ago

Please Answer THIS QUESTION ASAP ty!! First 2 answer right is BRAINLESS

pav-90 [236]

Hi there! :)

Answer:

$\huge\boxed{A = 119.44 cm^{2} }$

To find the area of the shaded region, we will need to find the areas of both the rectangle and the circle:

Rectangle: A = l × w

A = 11 × 12

A = 132 cm²

Circle: A = πr² (Let π = 3.14)

A = π(2)²

A = 4π

A ≈12.56 cm²

Subtract the area of the circle from the area of the rectangle:

132 - 12.56 = 119.44 cm².

4 0

3 years ago

Hiii pple can yall help me out here plz

levacccp [35]

Answer:

the answer is Monomial I hope this helps

6 0

3 years ago

Read 2 more answers

(1×1)-tan×(-tan) evaluate it by Determinants

andrew11 [14]

Answer:

1x1

Step-by-step explanation:

4 0

3 years ago