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Serga [27]
2 years ago
15

1/2ac2 where a =5 and b=2​

Mathematics
2 answers:
Evgen [1.6K]2 years ago
8 0
I’ll assume the c is b. (1/2) x (5) x (2) x (2) is 10
stiks02 [169]2 years ago
4 0

Answer: 10

Concept:

Here, we need to understand the idea of evaluation.  

When encountering questions that gave you an expression with variables, then stated: "If x = a, y = b, z = c" (a, b, c are all constants), this means you should substitute the value given for each variable back to the expression.

Solve:

**Disclaimer** I assumed that the [1/2] in [<u>1/2</u>ac2] is a single term and [c2] in [1/2a<u>c2</u>] is b². If it was, then you may refer to my answer. If it was not, then you may tell me and I will redo it.

<u>Given information</u>

a = 5

b = 2

<u>Given expression</u>

(1/2) · a · b²

<u>Substitute values into the expression</u>

=(1/2) · (5) · (2)²

<u>Simplify exponents</u>

=(1/2) · (5) · (4)

<u>Simplify by multiplication</u>

=(2) · (5)

=10

Hope this helps!! :)

Please let me know if you have any questions

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For the polynomial function ƒ(x) = −x6 + 3x4 + 4x2, find the zeros. Then determine the multiplicity at each zero and state wheth
murzikaleks [220]

There is a multiple zero at 0 (which means that it touches there), and there are single zeros at -2 and 2 (which means that they cross). There is also 2 imaginary zeros at i and -i.


You can find this by factoring. Start by pulling out the greatest common factor, which in this case is -x^2.


-x^6 + 3x^4 + 4x^2

-x^2(x^4 - 3x^2 - 4)


Now we can factor the inside of the parenthesis. You do this by finding factors of the last number that add up to the middle number.


-x^2(x^4 - 3x^2 - 4)

-x^2(x^2 - 4)(x^2 + 1)


Now we can use the factors of two perfect squares rule to factor the middle parenthesis.


-x^2(x^2 - 4)(x^2 + 1)

-x^2(x - 2)(x + 2)(x^2 + 1)


We would also want to split the term in the front.


-x^2(x - 2)(x + 2)(x^2 + 1)

(x)(-x)(x - 2)(x + 2)(x^2 + 1)


Now we would set each portion equal to 0 and solve.


First root

x = 0 ---> no work needed


Second root

-x = 0 ---> divide by -1

x = 0


Third root

x - 2 = 0

x = 2


Forth root

x + 2 = 0

x = -2


Fifth and Sixth roots

x^2 + 1 = 0

x^2 = -1

x = +/- \sqrt{-1}

x = +/- i

7 0
3 years ago
Only 6. Please and thanks
salantis [7]

Answer:

Part a) 7.536\ m

Part b) \$34.14

Step-by-step explanation:

Part 6)

a) How much edging is needed?

we know that

To find out how much edging is needed determine the circumference of the circular garden

The circumference of the circular garden is equal to

C=\pi D

where

D is the diameter

we have

D=2.4\ m

assume

\pi =3.14

substitute

C=(3.14)(2.4)

C=7.536\ m

Part b) we know that

To find out the cost to edge the garden, multiply the length of edging plastic needed by the cost of $4.53 per meter

so

(7.536\ m)(4.53\ \$/m)=\$34.14

8 0
3 years ago
the length of a rectangle is 2 units less than a number, and the width is 4 units more than the length. which of the following e
cestrela7 [59]
L=n-2, W=4+L=n+2

A=LW, since L=n-2 and W=n+2 we have:

A=(n-2)(n+2)  so it could be this expression or the expansion

A=n^2-4
4 0
3 years ago
Please help i am stuck please
anzhelika [568]

Answer:

it is D

Step-by-step explanation:

3 0
3 years ago
The two dot plots below show the heights of some sixth graders and some seventh graders:
lara [203]

Answer:

can’t help sorry dude

Step-by-step explanation:

7 0
3 years ago
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