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ANEK [815]
3 years ago
5

HELPP URGENT!

Mathematics
2 answers:
ollegr [7]3 years ago
4 0

Answer:

Step-by-step explanation:

It’s B

bixtya [17]3 years ago
3 0

Answer:

B.

Step-by-step explanation:

I had this question on a test and got it right

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Eric works in landscaping. He charges a fee of $25 plus $15 per hour. What is the least number of hours he must work in order to
nlexa [21]

Answer:

5 hours

Step-by-step explanation:

you would so 100 minus 25 (25 is just one charge fee) which is 75 then divide 75 into 15 which is the hourly pay, and get 5 which is the hours he must work

3 0
3 years ago
A mass of 5 kg stretches a spring 10 cm. The mass is acted on by an external force of 10sin( t ) N(newtons) and moves in a mediu
yKpoI14uk [10]

Answer:

A) C1 = 0.00187 m = 0.187 cm,  C2 = 0.0062 m = 0.62 cm

B)  A sample of how the graph looks like is attached below ( periodic sine wave )

C) w = \sqrt[4]{3} is when the amplitude of the forced response is maximum

Step-by-step explanation:

Given data :

mass = 5kg

length of spring = 10 cm = 0.1 m

f(t) = 10sin(t) N

viscous force = 2 N

speed of mass = 4 cm/s = 0.04 m/s

initial velocity = 3 cm/s = 0.03 m/s

Formulating initial value problem

y = viscous force / speed = 2 N / 0.04 m/s = 50 N sec/m

spring constant = mg/ Length of spring = (5 * 9.8) / 0.1 = 490 N/m

f(t) = 10sin(t/2) N

using the initial conditions of u(0) = 0 m and u"(0) = 0.03 m/s to express the equation of motion

the equation of motion = 5u" + 50u' + 490u = 10sin(t/2)

A) finding the solution of the initial value

attached below is the solution and

B) attached is a periodic sine wave replica of how the grapgh of the steady state solution looks like

C attached below

3 0
3 years ago
What the answer tonthis question 10x=-4(2x-9)​
mylen [45]

10x = 4(2x -9)

10x = 8x - 36

10x - 8x = -36 - 8x

2x = -36

2x ÷ 2 = -36 ÷ 2

x = -18

If you need a better explanation just as in the comments.

Happy to help! Please mark as BRAINLIEST! Thanks

7 0
3 years ago
H (x)=x^2+ 8x+7 , what function family does this equation belong to?
Semenov [28]

Answer:

Algebra

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Please explain or show how you got the answer
natka813 [3]
The answer is D) $0.15

James spent: $2.65
On 5 box of markers and 1 erase
So I divided 2.65 by 5 and got .15
$2.65 ÷ 5 = 0.15
So he spent $2.50 on markers an $0.15
Erasers

Based of James, Becky spent a dollar on. 2 boxes of markers
And $0.45 on 3 erasers

Hope I helped if so mark me as brainliest
3 0
3 years ago
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