All categories

3 years ago

Help anyone !?????????????????

Mathematics

1 answer:

Art [367]3 years ago

3 0

Answer: He will save $1.18

Step-by-step explanation:

1-Subtract $1.44 from $9.12 = $7.68

2-Subtract $8.86 from $7.68 = $1.18

You might be interested in

Esther needs a bin for her hair bows. A yellow bin has a length of 11.4 inches, a width of 4.2 inches, and a height of LaTeX: \f

fenix001 [56]

Answer:

Yellow Bin

Step-by-step explanation:

<u>Yellow Bin</u>

Length = 11.4 inches,

Width = 4.2 inches,

Height = $\frac{8}{3}$

Volume of the yellow bin=LWH $=11.4 X 4.2 X \frac{8}{3}=127.68 \:cubic \:inches$

Length = 9 inches,

Width = 5.45 inches,

Height = $\frac{11}{5}$

Volume of the red bin=LWH $=9X 5.45 X \frac{11}{5}=107.91 \:cubic \:inches$

The yellow bin has a greater volume since 127.68 is greater than 107.91.

6 0

3 years ago

What is the surface area of 14cm 4cm and 6cm

daser333 [38]

The six sides would be:
2 sides of 14*4=56cm^2, 112 in total
2 sides of 4*6=24cm^2, 48 in total
2sides of 14*6=84cm^2, 168 in total
112+48+168=328cm^2

3 0

3 years ago

If 123 and x are in proportion find the value of x

Marizza181 [45]

1:2=3:x

1/2=3/x

1×x=3×2

x=6

3 0

3 years ago

The displacement of a 500 g mass, undergoing simple harmonic motion, is defined by the function :

Valentin [98]

To solve this problem, we have to write out the simple harmonic motion equation and then use the respective formula to solve. The maximum kinetic energy, maximum potential energy and the maximum mechanical energy is equal to 7.56J.

<h3>Simple Harmonic Motion</h3>

The given equation of the simple harmonic motion is

$x = 3.5sin(\frac{\pi}{2t} + \frac{5\pi}{4})\\$

Data;

ω = π/2
k = 1.254N/m

Solving this

$\frac{dx}{dt} = \theta = -3.5 * \frac{\pi}{2} cos (\frac{\pi }{2}t + \frac{5\pi}{4})\\$

Let's calculate the maximum velocity.

$V_m = \frac{3.5\pi}{2}$

This is only possible when cos θ = -1

The maximum kinetic energy is

$K_m = \frac{1}{2}mv_m^2 = \frac{1}{2}* \frac{500}{1000} * (\frac{7\pi}{4} )^2\\K_m = 7.56J$

The maximum kinetic energy is 7.56J

The maximum potential energy can be calculated as

$\omega^2 = \frac{k}{m} \\k = \omega^2 m \\k = \frac{\pi^2}{4} * \frac{500}{1000}\\ k= 1.254 N/m$

Using the value of spring constant, we can find the maximum potential energy

$P.E = \frac{1}{2}kx^2\\P.E = \frac{1}{2} * 1.234 * 3.5^2\\P.E = 7.56J$

The maximum potential energy is 7.56J

The maximum mechanical energy is equal to the sum of maximum potential energy and the maximum kinetic energy.

$ME = P.E + K.E\\ME = 7.56J$

The reason ME is equal to 7.56J is because when x is at maximum, v = 0 and makes kinetic energy equal to zero.

ME = 7.56J

From the calculations above, the maximum kinetic energy, maximum potential energy and the maximum mechanical energy is equal to 7.56J.

Learn more on simple harmonic motion here;

brainly.com/question/15556430

#SPJ1

3 0

2 years ago

PLease help quickly!!!!!!!!

allochka39001 [22]

32k=8*4k
24=8*3

ab+ac=a(b=c)
32k+24=8(4k+3)

7 0

3 years ago