Simplify (x − 4)(x2 + 3x − 1).
A.x^3-x^2+11x+4
B.x^3-x^2-13x+4
C.x^3+7x^2+11x+4
D.x^3+7x^2-13x+4

Answer:

d

Step-by-step explanation:

Answer:

0

Step-by-step explanation:

Answer:

The value of x is,  [tex]\frac{3}{4}[/tex]

Explanation:

Given:

The exponential equation [tex]9^{2x} =27[/tex]        ....[1]

Exponential Identities:

[tex](x^a) =x^{ab}[/tex]

we can write equation [1] as;

[tex](3^2)^{2x} = 3^3[/tex]     [ [tex]3 \times 3= 9 , 3 \times 3 \times 3 = 27 [/tex] we can rewrite as [tex]3^2 =9 , 3^3 =27[/tex]]

by using above identities, we have

[tex](3)^{4x} = 3^3[/tex] then,

[tex]4x =3[/tex]          [ if [tex]x^a =x^b[/tex] then a =b]

Simplify:

[tex]x = \frac{3}{4}[/tex]

The decimal .66667 is approximately equivalent to the fraction 2/3. It is understood by recognizing that fractions are essentially divisions, and .66667 is the result of 2 divided by 3.

The decimal value of .66667 can be expressed as a fraction. In this case, .66667 is approximately equal to 2/3. To derive this, understand that fractions are a division operation. The decimal .66667 is a result of division where the numerator is smaller than the denominator, which is a characteristic of fractions between 0 and 1. So, if you divide 2 by 3, you will get 0.66667 proving that .66667 is a representation of the fraction 2/3.

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Answer: 4n + 12 = 3d

Step-by-step explanation:

The equation representing "If the numerator of a fraction is increased by 3, the fraction becomes 3/4" is 4(x + 3) = 3y. This, alongside the second condition of the denominator decreased by 7 leading to the fraction becoming 1, provides two equations that can be solved for the original fraction.

To represent the situation "If the numerator of a fraction is increased by 3, the fraction becomes 3/4," we can use the variable x for the numerator and y for the denominator of the original fraction. Therefore, the equation would be (x + 3)/y = 3/4. Applying the cross-product rule, we multiply each side of the fraction by the denominator on the other side, leading to 4(x + 3) = 3y. Simplified, this equation is 4x + 12 = 3y, which helps us solve for the original fraction along with the other given condition that reducing the denominator by 7 makes the fraction equal to 1. So, the second condition can be written as x/(y - 7) = 1. These two equations together can be solved simultaneously to find the values of x and y.

Answer:

D. a reflection across point R of pre-image

Step-by-step explanation:

Considering this question is over 4 years old I highly doubt you're going to see this question, or maybe you're not even in school anymore. Even after all that being said, I'm still going to ask this:

May I have brainliest please? :)

The ratio b/a is found by dividing both sides of the equation 5a = 20b by 5a, resulting in b/a being B) 1/4.

The question asks us to solve for the ratio b/a given the equation 5a = 20b. To find b/a, we can divide both sides of the equation by 5a:

From this, we can see that b/a must be 1/4, since 4 multiplied by 1/4 equals 1. Therefore, the correct answer is B. 1/4.

Final answer:

To find the volume of a cylindrical can, one must apply the formula for volume of a cylinder, V = πr²h, with the given dimensions. The can's volume is approximately 603.19 cubic centimeters or milliliters, translating to about 0.603 liters.

Explanation:

The student is asking about the volume of a can, which is the measure of how much space it occupies or, in this context, how much liquid it can hold. To find the volume of a cylindrical can, we can use the formula V = πr²h, where V is the volume, r is the radius, and h is the height.

Since the can is 12 cm high and 8 cm wide (which is the diameter), the radius would be 4 cm (which is half of the diameter). Substituting these values into the formula gives us V = π(4cm)²(12 cm), which simplifies to V = π × 16 cm² × 12 cm). When calculated, the volume of the can is approximately 603.19 cubic centimeters.

Since the student may also be interested in capacity in terms of common liquid measurements, it is useful to know that 1 cubic centimeter is equivalent to 1 milliliter.

Thus, the can would be able to hold approximately 603.19 milliliters. Given that 1000 milliliters make up 1 liter, the can's capacity would be roughly 0.603 liters, which is a little over half a liter.

Answer

part 1 = c/a

part 2 = b/a

Sine is the ratio of opposite to hypotenuse respect to as a given angle while tangent is the ratio of opposite to adjacent lengths of a given angle.

Part 1

Sine = opposite/hypotenuse

SinB = b/a

Tangent = opposite/adjacent

TanC = c/b

SinB × TanC = b/a×c/b

                       = c/a

Part 2

SinC = c/a

TanB = b/c

SinC×TanB= c/a×b/c

                   = b/a

The forest with an area of 5000 km² decreases by 5.75% annually. After 14 years, the forest area will be approximately 2,182 km².

The interest that is computed using both the principal and the interest that has accrued during the previous period is called compound interest.

The compound interest formula is:

[tex]A = P(1 + \frac{r}{n})^{nt}[/tex]

Where,

A is compounded amount

P is principal amoutn

r is the rate of interest

n is the number of times it is compounded

Given that,

Initial forest area  (P): 5000 km²

Rate of decrease per year: 5.75% or 0.0575

Number of years (n): 14

Since the area is decreasing,

Therefore r = -0.0575

Plugging in the values in the compound interest formula,

[tex]A = 5000 \times (1 - 0.0575)^{14} \\\\\approx 2,182 \text{ square km}[/tex]

Hence,

After 14 years, the forest area would be approximately 2,182 km².

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Exponential decay is demonstrated in the equation y = (0.9)x, showcasing a decrease as x increases.

Exponential decay occurs when the base of the exponential function is between 0 and 1, causing the function to decrease as x increases.

For example, if x = 1, y = 0.9; if x = 2, y = 0.81; and so on.

Final answer:

The sentence 'The product of Matt's score and 6 is 96' translates to the equation m × 6 = 96. By dividing both sides by 6, the value of Matt's score, denoted as m, is found to be 16.

Explanation:

To translate the given sentence into an equation, you start by identifying the mathematical operation described. The sentence states 'The product of Matt's score and 6 is 96'. The word 'product' indicates multiplication. Next, you use the variable m to represent Matt's score.

The equation that represents this situation is:

m × 6 = 96

To solve for m, you divide both sides of the equation by 6:

m = 96 ÷ 6

m = 16

Therefore, Matt's score is 16.

Sketch vectors A and B based on their descriptions. To find D = A - B, make B go in the opposite direction (namely, -B), put it tip to tail with A, and then vector D is from tail of A to tip of -B.

To answer this, we need to sketch the two vectors - vector A which represents the displacement of plane 1 from the control tower, and vector B which represents the displacement of plane 2 from the control tower. Vector A has a magnitude of 220 km and points 32 degrees north of west. This can be sketched as a line of certain length angling upwards from directly west. Vector B is 140 km in magnitude and angles 65 degrees east of north, thus it can be drawn shorter than Vector A and leaning more towards east from north.

Vector D = A - B is the displacement from plane 2 to plane 1. It represents the direction you would need to go if you were at plane 2 and wanted to get directly to plane 1. To find D, rearrange the equation to D = A + (-B). -B is just the B vector in the opposite direction. After making the B vector go in the opposite direction, place it tip to tail with A and the result from tail of A to tip of -B is vector D. Hence, the vectors would be sketched with their tails at the same point and their heads indicating the direction they point towards.

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Answer:

Length is 19 feet.

Width is 13 feet.

Step-by-step explanation:

Let the length of the rectangle be = L feet

The width is 6 feet less than its length, so width is = L-6 feet

The area of the rectangle is 247 square feet, means length x width = 247

[tex]L(L-6)=247[/tex]

[tex]L^{2} -6L=247[/tex]

[tex]L^{2} -6L-247=0[/tex]

Now here a = 1, b = -6 and c = -247

So, putting these in quadratic equation formula, we get

[tex]L=\frac{-(-6)+\sqrt{(-6)^{2}-(4)*(1)*(-247) } }{2*1}[/tex]

This gives L=19 or -13

As it is a dimension, so we will neglect the negative value.

Hence, L = 19 feet

Width = [tex]19-6[/tex] = 13 feet

To find the area of a circle segment, you need to know the radius and central angle of the segment. Use the formula Area of Circle Segment = ((central angle/360) x πr²) - 0.5r²sin(central angle) to calculate the area.

To calculate the area of the segment or shaded area of a circle, you must first need to know the radius of the circle and the central angle of the segment, as these will be necessary for the calculation. The formula for calculating the area of a segment in a circle is Area of Circle Segment = ((central angle/360) x πr²) - 0.5r²sin(central angle).

For instance, if the circle has a radius of 5 cm and the central angle of the segment is 60 degrees, the area is ((60/360) x π5²) - 0.5 x 5²sin(60), which will give the result when evaluated.

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