Hi can someone please help me with these!

The function f(d) that models this discount on an item that costs d dollars is f(d) = d - 15

The given parameters are

Discount = $15

Value = d

The function f(d) that models this discount on an item that costs d dollars is

f(d) = Value - Discount

This gives

f(d) = d - 15

Hence, the function f(d) that models this discount on an item that costs d dollars is f(d) = d - 15

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Answer:

  95

Step-by-step explanation:

You want the sum of 38 and 57 by making use of the GCF and the distributive property.

The GCF of two numbers can be found by looking at their difference (or their remainder when one divides the other). Here, that is ...

  57 -38 = 19

This value is a factor of both numbers, so is their GCF.

The distributive property tells us how to express the sum with the GCF factored out:

  38 +57 = 19(2 +3)

Then the sum is ...

  19(2 +3) = 19(5) = 95

The sum is 95.

The radius of the large circle would just be the diameter of one of the smaller circles, so 14 inches.

In order to solve this, we will need to find the area of the large circle and subtract the area of two smaller circles.

I'll be using pi as 3.14 for this.

Large Circle:

[tex]A = \pi r^{2}\\A = \pi (14)^{2}\\A = 196\pi \\A = 615.44[/tex]

Smaller Circle:

[tex]A = \pi r^{2}\\A = \pi (7)^{2}\\A = 49\pi \\A = 153.86[/tex]

Now we just simply subtract them.

615.44 - (2 * 153.86)

= 307.72 inches

You might've noticed that is exactly half of the area of the larger circle.

That's because if you halve the radius of a circle, you will get one fourth of original area.

Answer:

Hello,

Step-by-step explanation:

[tex]\dfrac{1}{\sqrt{1} +\sqrt{2} } =\dfrac{\sqrt{2} -\sqrt{1}}{(\sqrt{2} +\sqrt{1})*(\sqrt{2} -\sqrt{1}) } =\dfrac{\sqrt{2} -1}{2-1} =\sqrt{2} -1\\\\\dfrac{1}{\sqrt{2} +\sqrt{3} } =\dfrac{\sqrt{3} -\sqrt{2}}{(\sqrt{3} +\sqrt{2})*(\sqrt{3} -\sqrt{2}) } =\dfrac{\sqrt{3} -\sqrt{2}}{3-2} =\sqrt{3} -\sqrt{2}\\\\\\\dfrac{1}{\sqrt{n-1} +\sqrt{n} } =\dfrac{\sqrt{n} -\sqrt{n-1}}{(\sqrt{n} +\sqrt{n-1})*(\sqrt{n} -\sqrt{n-1}) }=\sqrt{n} -\sqrt{n-1}\\\\[/tex]

[tex]\\\dfrac{1}{\sqrt{1} +\sqrt{2} } +\dfrac{1}{\sqrt{2} +\sqrt{3} } +...+\dfrac{1}{\sqrt{n-1} +\sqrt{n} } =\boxed{\sqrt{n} -1}\\[/tex]

Answer:

Step-by-step explanation:

Based on the calculations, the IQR of this data is equal to 2.

How to determine the IQR of this data?

IQR is an acronym for interquartile range and it is a measure of the middle 50% of data values when they are ordered from lowest to highest.

Next, we would order the data from lowest to highest and then determine the median as follows:

Data = {1, 4, 4,} 4, {4, 6, 5}

Median = 4.

For Q₁ of the lower half of the data, we have:

Lower half = {1, 4, 4,}

Q₁ = 4.

For Q₃ of the upper half of the data, we have:

Upper half = {4, 6, 5}

Q₃ = 6.

Mathematically, IQR is the difference between quartile 1 (Q₁) and quartile 3 (Q₃):

IQR = Q₃ - Q₁

IQR = 6 - 4

IQR = 2.

Answer by

Lanuel

The results of those seven rolls that are shown shows that the range is 5.

The range is the size of the smallest interval which contains all the data and provides an indication of statistical dispersion. It is measured in the same units as the data.

Given that a six-sided die is rolled 7 times, to give 1, 4, 4, 4, 4, 6, 5, we need to find the range,

The numbers that are gotten include:

1, 4, 4, 4, 4, 6, 5.

It should be noted that range is calculated as:

R = Highest value - Lowest value

R = 6 - 1

R= 5

Therefore, the range from the numbers given is 5.

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Answer:

38

Step-by-step explanation:

38+3=41

thats the answer

brainliest please

Answer: If i did it right it should be -0.866

Step-by-step explanation:

Answer:

Step-by-step explanation:

So lets turn this into a ratio

-252/84

so now we need to know

y/74

So, -252/84= -3

so y/74 needs to be equal to -3

74*-3 =  222

-222/74=-3

So our answer is y = -222

Hope this helps!!^^

The correct statement regarding the graph of the function f(x) = (x + 2)(x + 6) is given by:

The function is negative for all real values of x where -6 < x < -2.

The graph of the function f(x) = (x + 2)(x + 6) is missing, and is given at the end of the answer.

We have to look at the graph of the function relative to the x-axis, as follows:

Hence, for function f(x) = (x + 2)(x + 6), we have that:

Hence the correct statement for the signal of the function is given as follows:

The function is negative for all real values of x where -6 < x < -2.

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The range is the set of y values.

The attached graph represents the graph of the inequality x ≤ 1 or x > 8

Inequality expressions are mathematical statements that are represented by variables, coefficients and operators where the opposite sides are not equal

The inequality expression is given as

x ≤ 1 or x > 8

When an inequality is represented with < or >, then we make use of the open circle to represent the inequality.

Otherwise, we make use of the closed circle to represent the inequality.

Using the above as a guide, we have the following representations:

x ≤ 1 -> Closed circle

x > 8 -> Open circle

See attachment for the graph of the inequality

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Answer:

See explanation

Step-by-step explanation:

Answer:

More fruit for the new design.

Step-by-step explanation:

120 times 2/3 is 80.

1/5 of 80 is 16.

1/8 of 120 is 15.

15 < 16, so the second design has more fruit.

Answer:

Step-by-step explanation:

instead x in f(x) we put g(x) in it.

f(g(x))= 3(7x-3)+1

=21x - 9 +1= 21x -8

Domain and range of [f(x) =-2(x+3)2 -5] are as follows: x in RR, y in [-∞, -5].

The range of values that we are permitted to enter into our function is known as the domain of a function. The x values for a function like f are contained in this collection (x). A function's range is the range of values that it can accept as input. The function produces this list of values once we enter an x value.

according to given information;

This is a polynomial of degree 2, "domain is x in RR," and "to determine the range, we require the vertex and if maximum" or "minimum turning point," the equation of the polynomial's vertex and range."" a parabola in "color(blue)"vertex form" is.

•(x)y=a(x-h)²+k

"where "(h,k)" are the coordinates of the vertex and a"

"is a multiplier"

f(x)=-2(x+3)²-5" is in this form"

"with "(h,k)=(-3,-5)" and "a=-2

"since " a <0" then maximum turning point"

"range is "y in(-oo,-5]

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Answer: c: 52

Step-by-step explanation:

the angles are congruent as shown by the hashmarks in the arks so you just need to double it

Answer:

c. 52°

Step-by-step explanation:

Since part of the angle is given (26°) and both parts of the angle are equal. 26° + 26° = 52°

Answer:

Step-by-step explanation:

Given equation:

Divide both sides by - 4:

Answer:

The value of v is 6.

Step-by-step explanation:

Solving for the value of v,

→ -4v = -24

→ v = (-24)/(-4)

→ v = 24/4

→ [ v = 6 ]

Hence, the value of v is 6.

RSTU ≅ R'S'T'U' and R'S'T'U' is also a parallelogram with two pairs of parallel sides.

Given that, parallelogram RSTU is rotated 180° clockwise about the origin.

We need to find how many pairs of parallel sides the rotated figure has.

Rotation of a point through 180°, about the origin when a point M (h, k) is rotated about the origin O through 180° in an anticlockwise or clockwise direction, it takes the new position M' (-h, -k).

The given transformation was performed on parallelogram RSTU = 180° clockwise rotation.

Given that a rotation is a form of rigid transformation, the shape and size of the preimage RSTU will be equal to the shape and size of the image R'S'T'U'.

Therefore, RSTU ≅ R'S'T'U' and R'S'T'U' is also a parallelogram with two pairs of parallel sides.

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Your question is incomplete, probably the complete question/missing part is:

Parallelogram RSTU is rotated 180° clockwise about the origin. How many pairs of parallel sides does the rotated figure have?

The required expression is 17x + 2124 which represents the combined total profit (in dollars) TechWiz made from MP3 and DVD players last week.

Algebraic expressions are mathematical statements with a minimum of two terms containing variables or numbers.

Arithmetic operations can also be specified by adding,  subtracting, dividing, and multiplying built-in functions.

Let the number of MP3 players TechWiz sold last week would be x.

Here TechWiz Electronics makes a profit of $35 for each MP3 player sold.

Last week, TechWiz sold a combined total of 118 MP3 and DVD players.

As per the condition,

So the required expression for the combined total profit would be:

= 35x + 18(118-x)

= 35x + 2124 - 18x

= 17x + 2124

Hence, the required expression is 17x + 2124 which represents the combined total profit (in dollars) TechWiz made from MP3 and DVD players last week.

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Answer:

5

Step-by-step explanation:

564 is divided by 3 = 4

There are 0.857 quarts of pure antifreeze that must be added to 3 quarts of a 10% antifreeze solution to obtain a 30% antifreeze solution.

The percentage is defined as a ratio expressed as a fraction of 100.

We have been given that there is 10% times 3 quarts or 0.3 quarts of antifreeze in the current mix and we want a 30% solution.

Let the amount of pure antifreeze to be added would be x

The equation to solve becomes,

⇒ (0.3 + x )/(3 + x) = 0.3

⇒ (0.3 + x ) = 0.3 × (3 + x)

⇒ (0.3 + x ) = 0.9 +0.3x

⇒ 0.7x = 0.6

⇒ x = 0.857

Therefore, we need to add 0.857 quarts of pure antifreeze to the current solution to make a 30% solution.

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The jump of the athlete to 40 inches, (1.016 m) is obtained using an initial velocity and time calculated as follows;

1) The initial velocity of the athlete is approximately 4.475 m/s

2) The time of flight which is the time to reach 40 inches and back is approximately 0.91 seconds

The height achieved by the athlete, h = 40 inches

Required;

1) The initial velocity

Solution;

From the kinematic equation of motion, for a free fall, we have;

Where;

v = The velocity at the final point = 0 (The athlete stops upward motion at the 1.016 m height and starts downward motion

u = The initial velocity

g = Acceleration due to gravity ≈ 9.81 m/s²

h = The height = 1.016 m

Which gives;

0² = u² - 2 × 9.81 × 1.016

u² = 2 × 9.81 × 1.016 ≈ 19.93392

u = √(19.93392) ≈ 4.465

2) The flight time;

The flight time can be found using the equation;

Which gives;

t = (u - v)/g

Where;

t = The time taken to reach maximum height.

Therefore;

t ≈ (4.465 - 0)/9.81 ≈ 0.455

The time taken to reach the record height is the same as the time to land back on the ground, which gives;

Time of flight = t + t = 2•t

The time of flight ≈ 2 × 0.445 ≈ 0.910

The time of flight is approximately 0.91 seconds.

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Answer:

Step-by-step explanation:

-5 - 9x = 3-9x-8  (Used distributive property)

-5 - 9x = -9x-5  (-8+3 = -5)

- 9x = -9x  (Add 5 to both sides)

0 = 0 (Add 9x to both sides)

Answer:

: integers

1.

a number which is not a fraction; a whole number.

The Total amount after 4 years will be $3000 and interest will be $500.

The rate at which you borrow or lend money is called the simple interest. If a borrower takes money from a lender, an extra amount of money is paid back to the lender. The borrowed money which is given for a specific period is called the principal. The extra amount which is paid back to the lender for using the money is called the interest.

You calculate the simple interest by multiplying the principal amount by the number of periods and the interest rate. Simple interest does not compound, and you don’t have to pay interest on interest. In simple interest, the payment applies to the month’s interest, and the remainder of the payment will reduce the principal amount.

The simple interest calculation's mathematical formula:

A = P (1+rt)

P = Principal Amount

R = Rate of interest

t = Number of years

A = Total accrued amount (Both principal and the interest)

Interest = A – P.

Total amount after 4 years

⇒ $2,500 (1+5%×4)

⇒ $2,500 ×1.2\

⇒ $3000

interest= $3000 - $2,500=  $500.

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Step-by-step explanation:

adding 93 to itself 6 times

dividing 558 by 6

Answer:

3

Step-by-step explanation:

Answer:

6.32

Step-by-step explanation:

They gave you everything you need in the question - just plug the x and y values in where they showed you. (2, 5) is your (x1, y1) and (-4, 7) is your (x2, y2)

Answer:

( -6 , 0 )

Step-by-step explanation:

the other one would be ( 3 , 0 ) but hope this helps !!

The measure of the angles shown is 90 degrees

A line is defined as the shortest distance between two points while the point where two lines meet is known as an angle.

From the given diagram, the sum of both adjacent angles is supplementary to have:

x + 96 + 96 + x = 180

2x + 192 = 180

2x = 180 - 192

2x = -12

x = -6

Substitute the value of x into the expression

<d = x + 96

<d = -6 +96

<d = 90 degrees

Hence the measure of the angles shown is 90 degrees

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