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3 years ago

Find the value of x and the value of y.

Mathematics

1 answer:

Zina [86]3 years ago

6 0

The answer is B. x = 65, y = 10.

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The value of a stock dropped a total of $18 over a 3-day period. Each day during this stretch the value dropped the same amount.

Sphinxa [80]

1/3 of 18 = 6

the song dropped $6 each day

4 0

2 years ago

The right end of a relaxed standard spring is at the origin; the left end is clamped at some point on the negative x-axis. Holdi

ella [17]

The work required to stretch the spring is 350J.

<h3>Hooke's Law</h3>

This law can be written by the formula: F=kx, where:

F= elastic force (N)

k= spring constant (N/m)

x= linear displacement (m)

<h3>Spring Work</h3>

For finding the spring work in J, you should apply the formula $W=\frac{k*(\Delta x)^2}{2}$ , where:

W= work (J)

k= spring constant (N/m)

x= difference between the linear displacements (m)

The question gives:

x=5 cm=0.05m requires a force of 1.4N

x=8 cm =0.08m

Step 1 - First, you should find the spring constant from Hooke's law, for x=5 cm and F=1.4N.

$F=kx\\ 1.4=k*0.05\\ \\ k=\frac{1.4}{0.05} =28\frac{N}{m}$

Step 2 - Now you can apply the formula for spring work.

$W=\frac{k*(\Delta x)^2}{2}\\ \\ W=\frac{28*(8-3)^2}{2} \\ \\ W=\frac{28*(5)^2}{2}\\ \\ W=\frac{28*25}{2}\\ \\ W=\frac{700}{2}=350J$

Read more about the spring work here:

brainly.com/question/3317535

5 0

2 years ago

How many 200 mL cups can be filled from a 3 L bottle

Archy [21]

So milileter
mili means 1000
1 leter=1000milileters
3liters=3000milileters
so
how many 200's fit into 3000
200 times what=3000
divide both sides by 200
what=15
answer is 15 of such cups can be filled

4 0

3 years ago

How many 3-digit numbers contain exactly one 1?

marysya [2.9K]

I believe the answer would be 17, because 100, 210, 201, 301, 310, 401, 410, 501, 510, 601, 610, 701, 710, 801, 810, 901, 910

6 0

3 years ago

Read 2 more answers

Write the quadratic equation whose roots are −6 and 4, and whose leading coefficient is 3.

marshall27 [118]

Answer:

The quadratic equation is $( 3x^{2} +6x -72)$

Step-by-step explanation:

The quadratic equation form f(x) = a ( x- α) (x-β)

The roots are −6 and 4 and whose leading coefficient is 3.

the quadratic equation is f(x) = 3 ( x- (-6)) (x-4) = $3( x^{2} -4x +6x-24)$

The quadratic equation is $3( x^{2} +2 x -24)$

<u>Final answer</u>:-

The quadratic equation is $( 3x^{2} +6x -72)$

8 0

3 years ago