If you save 10% off headphone that normally
cost $8.90, how much do you have to pay?

Answer:

The answer is "The total number of stamps is 35".

Step-by-step explanation:

There are many 35 stamps in total. The number of stamps during the first mixture is= 35  

Then let the other configurations be checked  

[tex]\to 20 + 15= 35 \\\to 22+13 = 35 \\\to 25 + 10 = 35 \\[/tex]

Therefore the correct answer is =35

The total number of stamps is 35. Therefore, the correct answer is option C.

From the given table,

Which ever the combination we choose, we get total number of stamps as 35.

Total cost of stamps in each case is

i) 18×0.45+17×0.65​

= $14.65

ii) 20×0.45+15×0.65​

= 9+9.75

= $18.75

iii) 22×0.45+13×0.65​

= 9.9+8.45

= $18.35

iv) 25×0.45+10×0.65​

= 11.25+6.5

= $17.75

Therefore, the correct answer is option C.

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Answer:

(5 + 3y)(25 - 15y + 9y²)

Step-by-step explanation:

This is a sum of cubes and factors in general as

a³ + b³ = (a + b)(a² - ab + b²), thus

125 + 27y³

= 5³ + (3y)³ with a = 5 and b = 3y

= (5 + 3y)(5² - 5(3y) + (3y)² )

= (5 + 3y)(25 - 15y + 9y²)

Answer:

[tex]\bold{x=\dfrac{-3\pm i\sqrt{7}}{2}}[/tex]

Step-by-step explanation:

Given quadratic equation is:

[tex]-x^2 - 3x = 4[/tex]

Rewriting the given equation:

[tex]-x^2 - 3x - 4 = 0[/tex]

OR

[tex]x^2 + 3x + 4=0[/tex]

Solution of a quadratic equation represented as [tex]ax^2+bx+c=0[/tex] is given as:

[tex]x=\dfrac{-b\pm\sqrt{b^2-4ac}}{2a}[/tex]

Comparing the given equation with standard equation:

a = 1

b = 3

c = 4

So, the roots are:

[tex]x=\dfrac{-3\pm\sqrt{3^2-4\times 1 \times 4}}{2\times 1}\\\Rightarrow x=\dfrac{-3\pm\sqrt{9-16}}{2}\\\Rightarrow x=\dfrac{-3\pm\sqrt{-7}}{2}[/tex]

[tex]\sqrt{-7 }[/tex] can be written as [tex]7\sqrt{-1}[/tex]

and [tex]\sqrt{-1} = i[/tex]

So, [tex]\sqrt{-7} = i\sqrt7[/tex]

The numbers containing [tex]i[/tex] in them, are called as complex numbers.

Therefore, the roots of the equation can be written as:

[tex]\Rightarrow \bold{x=\dfrac{-3\pm i\sqrt{7}}{2}}[/tex]

Answer:

Step-by-step explanation:

Given the expression, 130.715 ft ÷ 4.022 ft, we are to find its quotient.

Converting to fraction first 130.715 ft = 130,715/1000 and 4.022 ft = 4022/1000

130.715 ft ÷ 4.022 ft = 130,715/1000 ÷ 4022/1000

= 130,715/1000 * 1000/4022

= 130,715/4022

= 32.500 ft

Hence the quotient of the expression to the correct level of precision is 32.500 ft

Answer:

32.500ft or 32.5ft

Step-by-step explanation:

Answer:

the ans in decimal will be 2.55 bcz of 2 s.f ( significant figures)

Answer:

2.5555

Step-by-step explanation:23 divided by 9 is 2.5 repeating

Answer:

217.75

Step-by-step explanation:

Divide the distance traveled by the gallons used.  This will give you the distance that can be traveled using one gallon.

130/4 = 32.5

Now, multiply this value by 6.7 to find the distance that can be covered.

6.7 × 32.5 = 217.75

Answer:

8.726%

Step-by-step explanation:

Purchase price = $45.23

Current selling price of stock = $52.00

Intended increase before sale = 25%

25% of purchase price :

100% + 25% = 125%

125% of $45.23

1.25 × 45.23 = $56.5375

$56.5375 is the price at which Mason intends to sell the stock after purchase.

If current price = $52.00;

What percentage increase above the current price is $56.5375.

Let the percentage increase = p

Therefore,

p% of $52 = $56.5375

(p/100) * 52 = 56.5375

52p/100 = 56.5375

52p = 5653.75

p = 5653.75 / 52

P = 108.72596

Therefore p = 108.72596% - 100%

The percentage increase above the current price is thus :

8.72596%

= 8.726%

Answer:

The correct option is;

10.25 + (-3.5) = 6.75

Step-by-step explanation:

We note that when adding numbers the negative sign is equivalent to the minus sign which is a mathematical operator. Therefore, when we subtract one number from another, it is equivalent to adding the negative of the other number to the first number

The given expression is 10.25 - (3.5)

The result of the given expression is 10.25 - (3.5) = 6.5

Therefore, we have;

10.25 + (-3.5) = 6.75

Answer:

(- 4, 2 )

Step-by-step explanation:

Under a reflection in the x- axis

a point (x, y )→ (x, - y ), thus

(- 4, - 2 ) → (- 4, 2 )

The image of the coordinate after a reflection over the x-axis is (-4, 2).

When you reflect a point across the x-axis, the x-coordinate remains the same, but the y-coordinate is taken to be the additive inverse. The reflection of point (x, y) across the x-axis is (x, -y).

The given coordinate point is (-4, -2).

The rule of reflection is (x, y)→(x, -y)

Here, (-4, -2)→(-4, -(-2))

= (-4, 2)

Therefore, the image of the coordinate is (-4, 2).

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The cost for 4 hours is 850, the cost for 7 hours is 1300 then the cost for 12 hours will be equal to 1906.8.

The four basic mathematical operations are the addition, subtraction, multiplication, and division of two or even more integers. Among them is the examination of integers, particularly the order of actions, which is crucial for all other mathematical topics, including algebra, data organization, and geometry.

As per the data given in the question,

Cost for 4 hours = 850

4 × 212.5 = 850

Cost for 7 hours = 1300

7 × 185.7 = 1300

The rate at which it is increasing,

212.5 - 185.7 = 26.8

For 12 hours,

185.7 - 26.8 = 158.9

12 × 158.9 = 1906.8

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Answer:

12

Step-by-step explanation:

Let x = number of 50.00 notes.

They are worth 50x

Then, 2x = number of 20.00 notes.

They are worth 2x * 20 = 40x

50x + 40x < 1100

90x < 1100

9x < 110

x < 12.2

Answer: 12

Check:

x = 12   (number of 50.00 notes)

2x = 24    (number of 20.00 notes)

12 * 50 + 24 * 20 = 1080

If she used one more 50.00 note, she'd go over 1,100, so 12 is correct.

Answer:

Ratio = 5/12

Jack had = $972

Step-by-step explanation:

Given:

Since they spent same amount of money:

The ratio was 5/12

Sum of money:

As per ratio, x = 5/12y, substituting x in above equation:

Jack had $972

Answer:

s = 5.48 in

Step-by-step explanation:

Area of square = s²

30 in² = s²

s = √30

s = 5.48 in

Answer:

Approximately 5.48 inches.

Step-by-step explanation:

Area of a square formula: Area = length^2

Area here = 30 in^2

30 = length^2

Take square root of both sides to get rid of the square.

[tex]\sqrt{30\\}[/tex] = length

length = 5.47722558

The approximate side length of the frame is about 4.58 inches.

Answer:

-2

Step-by-step explanation:

The opposite of 2 is - 2 because it is the distance way away from 0, just in the opposite side.

Hope this helped!

Answer:

kindly see attached picture

hope it helped you:)

Answer:

48

Step-by-step explanation:

-12 x -4 = 48 (When we multiply two negetive numbers, the product becomes positive )

Answer:

48

Step-by-step explanation:

i did the quiz

Answer:

Step-by-step explanation:

a. 2a(3+7a)

b.2x(x^3+x^4+x^9)

c.3z(z-5)

d i cant see

Answer:

1) 6a + 14a^2

2a(3+7a)

2) 2x^4 + 2x^5 + 2x^10

2x^4(1 + x + x^6)

3) 6z^2 - 15z

3z(2z - 5)

4) 42w^3 - 14w + 77w^2

42w^3 + 77 w^2 - 14 w

7w(6w^2 + 11w - 2)

Step-by-step explanation:

Let [tex]y[/tex] be bags of chips and [tex]x[/tex] bottles of Gatorade.

The system of linear equations emerges.

[tex]3y+2x=7.35[/tex]

[tex]x=1.8[/tex]

Insert value of x from second equation into first to get rid of the system and get:

[tex]3y+2(1.8)=7.35[/tex]

Now solve for y.

[tex]y=\frac{7.35-2(1.8)}{3}=1.25[/tex].

A bag of chips costs $1.25.

Hope this helps.

Answer:

[tex]LO = OT = 8cm[/tex]

Step-by-step explanation:

Given

LT = 16cm

Required

Determine LO and OT

First, we have:

[tex]LO + OT = LT[/tex]

From the question, we understand that O is the middle of LT

This implies that LO = OT

Substitute OT for LO in the above formula

[tex]OT + OT = LT[/tex]

[tex]2OT = LT[/tex]

Divide both sides by 2

[tex]OT = \frac{1}{2}LT[/tex]

Substitute 16cm for LT

[tex]OT = \frac{1}{2} * 16cm[/tex]

[tex]OT = 8cm[/tex]

Recall that LO = OT

So;

[tex]LO = OT = 8cm[/tex]

Answer:

3a+2b+6

Step-by-step explanation:

Combine like terms 6a and -3a to get 3a

Everything else stays the same, so the answer is 3a+2b+6

Answer:

a

Step-by-step explanation:

Answer:

2x-2= -21

Step-by-step explanation:

Answer:

-9.5

Step-by-step explanation:

We can create an equation to represent this, where [tex]n[/tex] is the missing value.

[tex]2n - 2 = -21[/tex]

Now we can solve for [tex]n[/tex] by isolating it on one side of the equation.

Add 2 to both sides:

[tex]2n - 2 + 2 = -21+2\\\\2n = -19[/tex]

Divide both sides by 2:

[tex]2n\div2 = -19\div2\\\\n = -9.5[/tex]

Hope this helped!

Answer:

The answer to this is 3x+8

Answer:

x + 4

Step-by-step explanation:

Factor the polynomial.

6 (x+4)^2

Answer: B. The domain is {x|x<0 or x>0} and the range is {y|y>0}

Step-by-step explanation:

f(x)=x^-2

----------------------------

#1 Any negative (-) exponents means the answer will be 1/ the term

- for example, 3^-2=1/3^2=1/9

NOTE: NEGATIVE EXPONENTS DOES NOT MEAN IT IS A NEGATIVE NUMBER, IT IS STILL A POSITIVE NUMBER IF THE BASE IS POSITIVE.

-----------------------

The domain, which will be the value of x.

x can be any real number, except 0, because 0 can't go to negative exponents or else it will be undefined.

{x|x<0 or x>0}

-------------------------------------

The range, which will be the value of y.

Since the x value is being squared, it is always positive

{y|y>0}

Answer:

A. The first choice.

Step-by-step explanation:

[tex] f(x) = x^{-2} [/tex]

Let's rewrite the function in a more familiar way.

[tex] f(x) = \dfrac{1}{x^2} [/tex]

Domain:

We know that a denominator cannot equal zero, so we set the denominator equal to zero to find the values of x that must be excluded from the domain.

x^2 = 0

x = 0

The only value excluded from the domain is x = 0.

The domain is all reals except for zero.

Range:

Now that we know the domain is all real numbers except for 0, we look closely at the denominator.

What happens when you replace x with negative numbers? Since you are squaring x, all denominators will be positive. When you replace x with positive numbers, all denominators will also be positive. For values of x with a large absolute value, for example 1000, -1000, 1,000,000 or -1,000,000, as the absolute value of x increases, f(x) approaches zero. For values of x with a small absolute value, such as 0.0001, -0.0001, -0.00000001, or 0.00000001, as x approaches zero, f(x) approaches positive infinity.

The range is all positive real numbers.

Answer:

Domain: all real numbers except 0.

Range: all positive real numbers.

Acceleration =‘change in speed / time:

Acceleration = (10-2)/4

Acceleration =8/4

Acceleration = 2 m/s^2

Answer:

The answer is A

Step-by-step explanation:

Answer:

The correct option is;

720 unit²

Step-by-step explanation:

The given dimension of square pyramid is given as follows;

The length and width of the square prism = w = 12 units

The height of the square prism = x = 7 units

The base width of the pyramid = w = 12 units

The formula of the area of the square prism = 2 × w² + w × x × 4

∴ The area of the square prism = 2 × 12² + 12 × 7 × 4 = 624 unit²

The area of the square pyramid = w² + 1/2×4×w ×√((w/2)² + y²)

The area of the square pyramid = 12² + 1/2×4×12×√((12/2)² + 8²) = 12² +240 unit²

The formula for the surface area of the figure = The slant surface area of the square prism  + The area of the base of the square prism + The slant surface area of the square pyramid

The surface area of the figure = 12² + 12 × 7 × 4 + 1/2×4×12×√((12/2)² + 8²) = 720 unit²

The surface area of the figure = 720 unit².

Answer:

720 units2

Step-by-step explanation:

Hope this helps :)

Answer:

yes

Step-by-step explanation:

ny shape that has a line of symmetry is symmetrical shape.means the shape can be folded into two equal halves.

Using rounding concepts, it is found that 325.623 rounded to the nearest tenth is 325.6.

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