MATHEMATICS COLLEGE

PLEASE HELP- 25 points-what is the circumference of the circle. Diameter =9cm

Answers

Answer 1

Answer:

Answer:

9π cm - exact value

28.26 cm - approximate value

Step-by-step explanation:

C = πd =9π cm - exact value

C=9π≈ 28.26 cm - approximate value

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The dot plot shows the numbers of pets that students in a class own

Answers

Answer:

5 dots above zero

Step-by-step explanation:

Could the question be The dot plot shows the number of pets owned by the students in Jayod’s class.

The center, or the middle value, of the data set is _____.????

If it is that is the answer.

Hope this helps!! :)

Find all solutions of the equation algebraically. Check your solutions. (Enter your answers as a comma-separated list x^4-7x^2-144=0

Answers

Answer:

The solutions are: $x=4,\:x=-4,\:x=3i,\:x=-3i$

Step-by-step explanation:

Consider the provided equation.

$x^4-7x^2-144=0$

Substitute $u=x^2\mathrm{\:and\:}u^2=x^4$

$u^2-7u-144=0$

$u^2-16u+9u-144=0$

$(u-16)(u+9)=0$

$u=16,\:u=-9$

Substitute back $\:u=x^2$ and solve for x.

$x^2=16\nx=√(16)\n \quad x=4,\:x=-4$

$x^2=-9\nx=√(-9)\n \quad x=3i,\:x=-3i$

Hence, the solutions are: $x=4,\:x=-4,\:x=3i,\:x=-3i$

Check:

Substitute x=4 in provided equation.

$4^4-7(4)^2-144=0$

$256-112-144=0$

$0=0$

Which is true.

Substitute x=-4 in provided equation.

$(-4)^4-7(-4)^2-144=0$

$256-112-144=0$

$0=0$

Which is true.

Substitute x=3i in provided equation.

$(3i)^4-7(3i)^2-144=0$

$81+63-144=0$

$0=0$

Which is true.

Substitute x=-3i in provided equation.

$(-3i)^4-7(-3i)^2-144=0$

$81+63-144=0$

$0=0$

Which is true.

Please help I'm really stressed about this it's simple it's the last question on this assignment I'll mark brainliest plzzz help

Answers

The domain is all real numbers expect -2, and the domain is -4 to 4 expect 2.

i have 375 baseball cards in my collection . this is 5 times more than my brother has in his collection . how many do we have all together

Answers

Answer:

450

Step-by-step explanation:

Find the surface area of the triangular prism.5 ft
5 ft
13 ft
4 ft
6 ft

Answers

Answer:

234ft²

Step-by-step explanation:

Surface of the triangular prism

= ab+3bh

= (6ft×13ft)+(3×13ft×4ft)

= 78ft²+156ft²

= 234ft²

Hence, the surface area of the given triangular prism is 234ft².

Find the missing segment in the image below

Answers

the missing segment is 25

The missing segment is 25

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