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2 years ago

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 [1/2ac2] is a single term and [c2] in [1/2ac2] 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.

Given information

a = 5

b = 2

Given expression

(1/2) · a · b²

Substitute values into the expression

=(1/2) · (5) · (2)²

Simplify exponents

=(1/2) · (5) · (4)

Simplify by multiplication

=(2) · (5)

=10

Hope this helps!! :)

Please let me know if you have any questions

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Jason owes the bank a little more than $10. Which could be his balance?

nadezda [96]

I would say C seeing that he owes the bank a little more than $10, but im not sure it could also be A. I chose the negative number because if he owes them that would be money coming out of his account.
Hope This Helps!

5 0

3 years ago

Maggie buys a dress and a pair of shoes at The Home Store. Before adding the sales tax, she pays $48 for a dress that normally s

mezya [45]

Answer:

a) $26

b) 24.07%

c) $94.3

Step-by-step explanation:

Given that:

Before tax:

Normal price of dress = $62

Discounted price of dress = $48

Normal price of a pair of shoes = $46

Discounted price of a pair of shoes = $34

a) Before the sales tax, total savings = ($64 - $48) + ($46 - $34) = $26

b) Total percentage discount on total sales.

Total bill for original price = $62 + $46 = $108

Percentage discount can be found by the formula:

$\dfrac{\text{Total discount}}{\text{Total bill for original price}}\times 100\\\Rightarrow \dfrac{26}{108} \times 100 = 24.07\%$

c) Total amount paid if the sales tax is 15%.

Amount paid with tax = Amount after discount + 15% of amount after discount

Amount after discount = $48 + $34 = $82

15% of $82 = $18.29

Amount paid with sales tax = $82 + $12.3 = $94.3

6 0

3 years ago

Not good at physics problems, need help!

xxMikexx [17]

Next time, please post in the physics section. It is not exactly a math problem because it requires knowledge of kinematics equations, assumptions and constants.

Given:

A rocket fired (assumed vertically upwards) at an initial velocity of +123 ft./s (positive upwards) against acceleration due to gravity of (assumed -32.2 ft/s^2) at an initial height of +4 feet above the ground. Need to find the time it takes before rocket reaches ground (assuming air resistance negligible) due to free fall.

Kinematics equations:

Using given numerical information

u=inivitial velocity=+123 ft/s

g=acceleration due to gravity= -32.2 ft/s^2

s0=initial location, height=+4 ft

s1=final local, height = 0 ft (ground)

We make use of the kinematics equation

s1=s0+u*t+at^2.............................(1)

where a=acceleration = g = -32.2 ft/s^2

Subsitute values in (1)

0=4+123*t-32.2t^2

and solve for t using the quadratic formula (knowing that t>0)

t=[-123 &pm; sqrt(123^2-4*(-32.2)*4)]/(2*-32.2) =>

t = -0.03225 sec. or t=3.852 sec.

Reject negative root, so the rocket will hit the ground 3.852 seconds since airborne.

Note: since #61 and #62 are pale in colour, it will be assumed that you can handle those two, or they will be the subject of other questions. Thank you.

4 0

3 years ago

98 points! Easy! Show work!

Svet_ta [14]

Hello there!~

a² - 6a + 9

The factorization of that is (a - 3)²

6h² + h - 70

The factorization of this is (3h - 10)(2h + 7)

I'm gonna take a look at the other questions.

4 0

3 years ago

Read 2 more answers

Determine the convergence or divergence of the series.

GREYUIT [131]

Answer:

i think that the correct answer would be the third one

Step-by-step explanation:

hope this helps

7 0

2 years ago

1/2ac2 where a =5 and b=2​

1/2ac2 where a =5 and b=2