i need help with this question

The cost of the mp3 player after the discount is $27.98.

A percentage is a number or ratio that can be expressed as a fraction of 100. If we have to calculate percent of a number, divide the number by whole and multiply by 100.

Given

An mp3 player is on sale for 30% off the regular price of $39. 98.

The price of the mp3 player after the 30% is given

[tex]\rm Cost \ of \ player \ after \ discount = Cost \ of \ player \times discount\\\\\rm Cost \ of \ player \ after \ discount = 39.98\times 0.30\\\\\rm Cost \ of \ player \ after \ discount = 11.99[/tex]

The cost of mp3 player after 30% discount is;

= $39.98 - $11.99 = $27.98

Hence, the cost of the mp3 player after the discount is $27.98.

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Answer:

12.3

Step-by-step explanation:

Use the law of sines.

[tex] \dfrac{a}{\sin A} = \dfrac{b}{\sin B} [/tex]

[tex] \dfrac{14}{\sin 80^\circ} = \dfrac{x}{\sin 60^\circ} [/tex]

[tex] x = \dfrac{14\sin 60^\circ}{\sin 80^\circ} [/tex]

[tex] x = 12.3~cm [/tex]

Answer:

i think its 9 but im not sure. please dont take my word for it

Given that,

Time taken by Hua to complete her homework is 35 minutes

ATQ,

The time taken by Carrie is five less minutes than twice the amount of time as Hua to complete her homework. Let it is x minutes.

The numerical expression for this is given by :

x = 2(times taken by Hua)-5

x = 2(35)-2

Above is the numerical expression for time taken by Carrie.

We can also solve it, x = 70-2 = 68 minutes

Hence, this is the required solution.

Answer:

<2 ~= <4 - Vertical Angles Theorem

<2 ~= <8 - Alternate Exterior Angles Theorem

<4 ~= <8 - Corresponding Angles Theorem

line I || line m - Transitive Property

Answer:

Point slope form is y+1=4(x-1)

Step-by-step explanation:

She lifts water at a rate of 4ft/s.

After 1 second, the bucket is 1 feet below the top of the well. So, point form of this would be (1,-1).

Here, let's use the slope m= rate = 4 ft/s

Point as (1,-1)

So, y-(-1)= 4(x-1)

Simplify, it gives

y+1= 4(x-1)

Answer:

y + 1 = 4 (x - 1 )

Step-by-step explanation:

Answer 1:

+

Answer 2:

1

Answer 3:

4

Answer 4:

1

What is the importance of geometric figures in one’s life?

➪ Geometry plays an important role in our day to day life because it helps us in deciding material, design etc.. of an object. It also plays a vital role in construction process itself. Different types of houses and buildings are built using geometric shapes to give them a modern look.

The importance of geometric figures in one's life can be used for architectural drawings and design, astronomy work, or construction purposes.

Geometric figures are mathematical shapes that are used for construction by combining points, straight lines, or planes.

The importance of geometric figures in one's life has large importance depending on the intended purpose it's required to carry out. Geometric figures can be used:

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Answer: A straight angle

Step-by-step explanation:

90 + 90 = 180

Answer: y=|x-2|+3

Step-by-step explanation:

Answer:

[tex]x=2\sqrt5[/tex]

Step-by-step explanation:

I'm assuming that 15 is the length of only part of the hypotenuse of the larger triangle.

The remaining part can be easily found by noticing that the red triangle is half an equilateral triangle of side x, so the missing part is x/2.

Now for a known theorem (easily proved with the fact that triangles AHC and ABC are similar) you can write the following equation containing x:

[tex]x^2 = \frac x2 ( \frac x2 +15) \rightarrowx^2 = \frac {x^2}4+15 \\\\3x^2=60 \rightarrow x^2 = 20 \\x=2\sqrt5[/tex]

(where we obviously took only the positive root since x is a lengtth measure.

Answer:

Word problem is the operation

Answer:

C 60 inches

Step-by-step -

60 x 2 = 120, which is both lengths, and since he width is half the length, then 30 x 2 = 60. So 130 (length) + 60 (width) = 180. So 60 inches would be the maximum length for both sides.

Answer:

C

Step-by-step explanation:

I just took the unit test

° ║_Answer_║°

₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋

8y4 is not a perfect square.

₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋

Step-by-step explanation:

₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋

Knowing that; A difference of two perfect squares,  A2 - B2  can also be factored into  (A+B) • (A-B)

Verification;

(A+B) • (A-B) =

A2 - AB + BA - B2 =

A2 - AB + AB - B2 =

A2 - B2

Notes;

AB = BA is the commutative property of multiplication.

AB + AB equals zero and is therefore eliminated from the expression.

Answer:

25  is the square of  5

8 is not a square

₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋

~[RevyBreeze]~

Expression 25x⁴ - 8y⁴ is not the difference of two squares because 8y⁴ is not a perfect square.

Subtraction in mathematics means that is taking something away from a group or number of objects. When you subtract, what is left in the group becomes less.

Given that;

The expression is,

⇒ 25x⁴ - 8y⁴

Now, We have;

⇒ 25x⁴ - 8y⁴

⇒ (5y²) - 8y⁴

Clearly, 8y⁴ is not a perfect square.

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Answer:

10/20

40/80

80/160

Step-by-step explanation:

5/10 x 2 = 10/20

5/10 x 8 = 40/80

5/10 x 16 = 80/160

Hope this helps!!

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Answer:

it is 1111.1

Step-by-step explanation:

divide 400 by 36 percent

Answer:

144 meters are damaged, 256 meters are undamaged

Step-by-step explanation:

400m = 100%

Xm = 36%

Xm= (400m)(36%)/100%

Xm=14400 meters/100%

Xm= 144meters

To know how much of the road is undamaged:

400m-144m= 256m

Step-by-step explanation:

following properties have been used in constructing the kite

1. diagonals at right angles

2. one of the diagonals bisect

3. pairs of consecutive sides are equal

Answer:

b

Step-by-step explanation:

because u will subtract 0.5 from 8 nine times

8-0.5= 7.5

7.5-0.5=7.0

7.0-0.5= 6.5

6.5-0.5=6.0

6.0-0.5=5.5

5.5-0.5=5.0

5.0-0.5=4.5

4.5-0.5=4.0

4.0-0.5=3.5

Answer:

COMMUTATIVE PROPERTY OF ADDITION

Step-by-step explanation:

Answer:

8:40 a.m.

Step-by-step explanation:

Let's start by finding the time John should arrive at school.

9:00 a.m. - 5 minutes = 8:60 a.m. - 5 minutes = 8:55 a.m.

Note that there are 60 minutes in an hour

Now, we find the time he should leave home...

8:55 a.m. - 15 min = 8:40 a.m.

Therefore John should leave at 8:40 a.m.

Another way to solve this problem:

John needs to leave home in "x" minutes before 9:00 a.m. to arrive when the bell rings (9:00 a.m.). To find "x", we need to add 15 and 5 to get:

15 min + 5 min = 20 min.

Therefore he must arrive 20 minutes before 9:00 a.m.

9:00 a.m. - 20 min = 8:40 a.m.

Therefore John should leave at 8:40 a.m.

Answer:

30ft

Step-by-step explanation:

i think by common sense as an high schooler

8 times 5 equals 40ft and 6 times 5 equals 30 ft

Answer: table C or 3

Step-by-step explanation:

If you graph it on paper then it creates a straight line, where the others do not.

Answer:

4x-6y-12=0 than it passes through the origin so.distance equals /ax+by+c/all over a^2+ b^2= 4(0)+6(0)-12/4^2+6^2= -12/16+36=12/52=0.23077

Answer:

10-5-8 or 10+(-5)+(-8)

Step-by-step explanation:

Answer:

Step-by-step explanation:

Answer:

the answers in the photo

Step-by-step explanation:

9514 1404 393

Answer:

  C.  2y = (2x-1)/4

Step-by-step explanation:

An equation is linear when the exponents of the variables are 1 and the sum of the exponents of the variables in any term is 1.

a) 3xy = 4 . . . . sum of exponents is 1+1=2

b) f(x) = 2/3(1 -x^2) . . . . exponent is 2

c) 2y = (2x -1)/4 . . . . all exponents are 1 (linear)

d) y = 3/(x+1)  ⇒  xy +y = 3 . . . . sum of exponents is 1+1 = 2

Answer: If this is 2 multiplying the bracket

x+14

If the bracket is raised to the power of 2

1/4x+7x+49

Step-by-step explanation:

(1/2x +7)2

((1/2x*2)+(7*2))

x+14.

(1/2x+7)(1/2x+7)

1/2x(1/2x+7)+7(1/2x+7)

1/4x+7/2x+7/2x+49

Answer:

(L • W)(x) = 12x^3 − 20x^2 + 24x (the last option)

Step-by-step explanation:

It's very simple actually. To find an area of a rectangle, all we have to do is multiply its two sides. We are given the length and the width of the rectangle - its sides. All we have to do is simply multiply them:
Area = L(x) * W(x)
L(x) = 4x
W(x) = 3x^2 - 5x + 6
Therefore the area is equal to:
(4x) * (3x^2 - 5x + 6) =
= 4x * 3x^2 - 4x * 5x + 6 * 4x =
= 12x^3 - 20x^2 + 24x
And there's your answer, option D, or 4 or whatever you call the last one.

Answer:

i think the answer is 2

Step-by-step explanation:

because it depends on how many brushes u buy so x is how many brushes u buy. and theres the cost