Factor by grouping.
72x^3 - 56x^2 + 45x - 35

Answer:

(1, - 2 )

Step-by-step explanation:

Given the 2 equations

y = - 4x + 2 → (1)

y = 6x - 8 → (2)

Substitute y = 6x - 8 into (1)

6x - 8 = - 4x + 2 ( add 4x to both sides )

10x - 8 = 2 ( add 8 to both sides )

10x = 10 ( divide both sides by 10 )

x = 1

Substitute x = 1 into (2) for corresponding value of y

y = 6(1) - 8 = 6 - 8 = - 2

Solution is (1, - 2 )

Answer:

975 girls

Step-by-step explanation:

To find 65% of 1500, multiply 1500 by .65 (to convert percentages to decimals, just move a decimal point over two spaces).

1500*.65=975

You can check that this answer is right with logic. Most of the students will be girls (more than 50%) and 975 makes up most of 1500.

Someone else asked this same question a while ago, and you can find their explanation here https://brainly.com/question/969975

Answer:

1. HL

2. SAS

3. SSS

Step-by-step explanation:

Triangles ABR and ACR share side AR (hypotenuse of two right triiangles).

Angles ABR and ACR are right angles.

Sides AB and AC are congruent.

Sides BR and CR are congruent.

1. You can use HL theorem, because two triangles have congruent pair of legs and congruent hypotenuses.

2. You can use SAS theorem, because two triangles have two pairs of congruent legs and a pair of included right angles between these legs.

3. You can use SSS theorem, because two triangles have two pairs of congruent legs and  congruent hypotenuses.

Answer

1. HL

2. SAS

3. SSS

Step-by-step explanation:

just took the test aced it

The inequality which shows the number of weeks, w, you need to save to be able to go on a trip is 25w + 200 ≥ 535.

Linear inequalities are defined as those expressions which are connected by inequality signs like >, <, ≤, ≥ and ≠ and the value of the exponent of the variable is 1.

Total amount needed to go for a trip to California = $535

Already saved amount = $200

You decide to save an additional $25 per week.

Let w be the number of weeks needed to save $25 to get the amount needed to go for trip.

These saved amounts must be at least $535 to go for trip.

The amount saved after w weeks is 25w

Total saved amount = 200 + 25w

This saved amount must be ≥ 535.

So the inequality is 200 + 25w ≥ 535.

Hence the inequality which represents the amount need to save to go for trip is  200 + 25w ≥ 535.

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In a function, each "x" can only have one "y" number. A relation can still be a function if a y-value has more than one x-value.

Answer:

11. a)

The relationship represented by the graph is a function because it passes the vertical line test (VLT). Any vertical line you pass through the graph, it only "hits" one spot on the graph. For a relation to be a function, each x-value can only have one y-value. This means no hour can have two different amounts of bacteria.

b)

If there were the same number of bacteria for two consecutive hours, the graph would still represent a function. In this case, two values for "y" will have more than one value for "x". Although, each x-value still only has one y-value, so it's still a function.

Answer:

9.5

Step-by-step explanation:

The cost of movie tickets is $9.50 per person.

Now, if the variable x represents the number of people and t represents a total cost in dollars, then we can write the equation that models the above situation as

t = 9.5x ......... (1)

From this above two-variable linear equation it is clear that the slope of the line is 9.5. And its unit is dollars per person. (Answer)

New equations for a system can be written by interacting (adding or subtracting) the given equations, using substitution to insert an equation into another, or scaling an equation by multiplying it by a constant.

When working with a system of equations, there are multiple ways in which we can write new equations that create equivalent systems. Here are three methods:

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Final answer:

To create equivalent systems of equations, one can use scaling to multiply an equation by a non-zero constant, substitution to replace variables with equivalent expressions, or elimination through addition or subtraction to reduce the number of variables.

Explanation:

When dealing with a system of equations, there are several methods to create equivalent systems, which effectively means rewriting the equations without changing the solution set. One common approach to achieve this is by using the following techniques:

Scaling: Multiplying an entire equation by a non-zero constant. This changes the coefficients but not the solutions.

Substitution: Replacing one variable with an equivalent expression derived from another equation in the system.

Elimination (Addition or Subtraction): Adding or subtracting equations from each other to eliminate one of the variables, effectively reducing the number of variables to solve for.

These methods allow us to simplify complex systems or prepare them for other solving techniques, such as matrix inversion or graphical representation.

Answer:

ln|sec θ + tan θ| + C

Step-by-step explanation:

The integrals of basic trig functions are:

∫ sin θ dθ = -cos θ + C

∫ cos θ dθ = sin θ + C

∫ csc θ dθ = -ln|csc θ + cot θ| + C

∫ sec θ dθ = ln|sec θ + tan θ| + C

∫ tan θ dθ = -ln|cos θ| + C

∫ cot θ dθ = ln|sin θ| + C

The integral of sec θ can be proven by multiplying and dividing by sec θ + tan θ, then using ∫ du/u = ln|u| + C.

∫ sec θ dθ

∫ sec θ (sec θ + tan θ) / (sec θ + tan θ) dθ

∫ (sec² θ + sec θ tan θ) / (sec θ + tan θ) dθ

ln|sec θ + tan θ| + C

The bakery made 3 batches of cookies and a total of 180 cookies.

To determine the number of batches of cookies the bakery made, we divide the total amount of flour used by the amount of flour used in each batch. The bakery used 5.25 cups of flour in total, and each batch requires 1.75 cups of flour. Therefore, the number of batches made is:

[tex]\[ \text{Number of batches} = \frac{\text{Total flour used}}{\text{Flour per batch}} = \frac{5.25}{1.75} \][/tex]

[tex]\[ \text{Number of batches} = 3 \][/tex]

Since there are 5 dozen cookies in each batch, we multiply the number of batches by the number of cookies per batch to find the total number of cookies made:

[tex]\[ \text{Total number of cookies} = \text{Number of batches} \times \text{Cookies per batch} \][/tex]

[tex]\[ \text{Total number of cookies} = 3 \times (5 \times 12) \][/tex]

[tex]\[ \text{Total number of cookies} = 3 \times 60 \][/tex]

[tex]\[ \text{Total number of cookies} = 180 \][/tex]

Thus, the bakery made 3 batches of cookies, resulting in a total of 180 cookies."

Answer:

1. A is d=1.75

Step-by-step explanation:

Answer:

1a) 10.50=6d

1b) d= 1.75

2a) w is less than or equal to 35

2b) It would not make sense to have a bag that weighed zero or below.

3a) The tree grows 15 ft for every since it was planted.

3b) h(t)=70+15x

Answer:

3x^3-18x^2+26x-8

Step-by-step explanation:

(x-4)(3x^2-6x+2)

3x^3-6x^2+2x-12x^2+24x-8

3x^3-18x^2+26x-8

Answer:

3x^3-18x^2+26x-8

Step-by-step explanation:

(x-4)(3x^2-6x+2)

3x^3-6x^2+2x-12x^2+24x-8

3x^3-18x^2+26x-8

Answer:

10x+15

Step-by-step explanation:

5(2x+3)=10x+15

Answer:

10x+15.

Step-by-step explanation:

Its just simplified.

5 times 2x is 10x

5 times 3 is 15.

Put it together 10x+15.

1. r closest to 1: figure

2. No linear relationship: Figure 1

3. r equal to 1: Figure 3

Step-by-step explanation:

Correlation is the link between two variables or things"

Now for the scatter plot of a correlation:

Correlation coefficient closest to 1:

We can see in figure 4 that the data points are gathered across a line but not a perfect line and both the quantities are increasing so the correlation coefficient is close to 1.

Least Evidence of linear relationship:

Figure 1 can be observed to conclude that the data points are scattered on whole scatter plot hence creating no relationship

Correlation coefficient equal to -1:

We can see in figure 3 that one quantity is increasing and the other is decreasing and the data points are forming a line so the correlation coefficient will be -1

Keywords: Correlation, Scatter plot

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Answer:

-1.6

Step-by-step explanation:

Simple division but with a negative number. Positive ÷ Negative = Negative and vice versa

Answer:

-1.6

Step-by-step explanation:

edge-

Answer:

1170

Step-by-step explanation:

Translation

Rigid motion occurs when you move figures without affecting the size or shape in order for the figure to be congruent in a new location.

The types of rigid motions are:

In this problem, you haven't provided any figure, but I've attached one below. As you can see, we have a triangle ΔABC that has been translated to a new location in order to match triangle ΔDEF. So any point (x, y) on the triangle is mapped following this rule:

[tex](x,y) \rightarrow (x+8,y+2)[/tex]

So the new vertices D,E,F will be:

[tex]A(-6,2) \rightarrow D(-6+8,2+2)=\boxed{D(2,4)} \\ \\ B(-6,6) \rightarrow E(-6+8,6+2)=\boxed{E(2,8)} \\ \\ C(-2,2) \rightarrow F(-2+8,2+2)=\boxed{F(6,4)}[/tex]

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Scott has ridden 12% of the course.

Step-by-step explanation:

Length of bike course = 50 miles

Distance covered = 6 miles

Distance covered in percentage = [tex]\frac{Distance\ covered}{length\ of\ bike\ course}*100[/tex]

Distance covered in percentage = [tex]\frac{6}{50}*100\\[/tex]

Distance covered in percentage = [tex]\frac{600}{50}[/tex]

Distance covered in percentage = 12%

Scott has ridden 12% of the course.

Keywords: percentage, distance

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Answer:

48pi or about 150.8 cm^3

Step-by-step explanation:

volume of cone = 1/3 * pi * r^2 * h

r = 12/2 = 6

1/3 (6^2) (4) pi = 48pi

48pi ~= 150.8 cm^3

Answer: 150.8 cm^3

Step-by-step explanation: The volume formula is V=πr^2(h/3). Once you plug in the radius (half the diameter) and the height, you solve the equation and get the answer of 150.8 cm^3

Answer: this equation has no solutions ,I just got it correct

Step-by-step explanation:

Answer:

No solutions

Step-by-step explanation:

Khan Academy says its right

Answer:

a. 10x + 2y = 23

b. 4x - y + 3 = 0

c. y + 8 = 0

d. 2x - y + 4 = 0

Step-by-step explanation:

a.

Slope of the line 'm' is [tex]\frac{36.5-1.5}{-5-2}[/tex] = [tex]\frac{35}{-7}[/tex] = -5

Equation of the line with slope m and passing through the point (x₁,y₁) is y-y₁ = m·(x-x₁)

⇒y-1.5 = -5·(x-2)

⇒y = -5x + 10 + 1.5

⇒5x + y = 11.5 (or) 10x + 2y = 23

b.

Slope of the line 'm' = 4

Equation of the line with slope m and passing through the point (x₁,y₁) is y-y₁ = m·(x-x₁)

⇒y-15 = 4·(x-3)

⇒y = 4x -12 + 15

⇒4x - y + 3 = 0

c.

Line is parallel to y = 1

Equations of parallel lines only differ by constant. So the required line equation has the form y = c where c is any real number.

But, it is given that the line passes through the point (3,-8)

⇒c=-8

⇒y = -8 (or) y + 8 = 0

d.

Equation of a line with slope 'm' and y-intercept of (0,c) is of the form y = mx + c

⇒y = 2x + 4

⇒2x - y + 4 = 0

Answer:

[tex]x\leq -27[/tex]

Step-by-step explanation:

Given:

[tex]\frac{x}{-9}\geq 3[/tex]

Multiplying both sides by -9, we get

[tex]-9\times \frac{x}{-9}\leq -9\times 3\\x\leq -27[/tex]

On multiplying both sides of an inequality by a negative number, the sign of the inequality changes as evident in the above equation.

So, the value of [tex]x[/tex] varies as:

[tex]x\leq -27[/tex]

Answer:

(B) The inequality that represents this relationship is [tex]3x  < x^2 +15[/tex]

Step-by-step explanation:

Let us assume the given number = x

⇒ 3 times the given number = 3 (x)  = 3x

Square of the given number = [tex](x)^2  = x^2[/tex]

Now, According to the question:

The difference of (3 x) and 15 is no less than [tex] x^2[/tex]

⇒ [tex]3x - 15 < x^2\\ \implies 3x  < x^2 +15[/tex]

or, [tex]3x  < x^2 +15[/tex]

Hence, the given inequality is represented as [tex]3x  < x^2 +15[/tex]

Answer:

3x - 15 > [tex]x^{2}[/tex]

Step-by-step explanation:

Let the number be x

⇒3 times the number is 3x and square of the number is [tex]x^{2}[/tex]

Difference of 3 times a number and 15 is 3x -15

⇒This difference is no less than the square of the number

⇒The difference is greater than or equal to square of the number

⇒ 3x - 15 ≥ [tex]x^{2}[/tex]

Answer:

1,170,000

Step-by-step explanation:

The returns are 15% of 1,300,000.

15% of 1,300,000 = 15% * 1,300,000 = 0.15 * 1,300,000 = 195,000

In 1 month, 195,000 smartphones were returned.

In 6 months, 6 times as many smartphones were returned.

6 * 195,000 = 1,170,000

Answer: 1,170,000

Answer:

1,170,000 Smartphones were returned over a 6-month period.

Step-by-step explanation:

Ok, so to start off, 15% of 1,300,000 is 195,000. Now if everything remains the same over the next 5 months, you just need to multiply the 195,000 by 6 to get the 6 month return rate. This results in the number of 1,170,000 Smartphones Returned over a 6-month period.

Answer:

see explanation

Step-by-step explanation:

To find the x- intercept let y = 0 in the equation and solve for x

x + 0 = 9

x = 9 ← x- intercept ⇒ (9, 0 )

To find the y- intercept let x = 0 in the equation and solve for y

0 + y = 9

y = 9 ← y- intercept ⇒ (0, 9 )

Answer:

4200

Step-by-step explanation:

In an arithmetic sequence equation t=a + (n-1)d, a is the starting value. In this case, a=3000.

Although, since the initial investment is not considered the first month, the equation is t = a + dn.

d is the rate of change. In this case, the rate of change is 100 for every month, n.

Substitute these values from the problem to get an equation:

t = 3000 + 100n

t means the total amount of money we have for the amount of months (n) that passed.

Sub n for 12.

t = 3000 + 100n

t = 3000 + 100(12)

t = 4200

You will have $4200 after 12 months of investment.

The right answer is Option C.

Step-by-step explanation:

A. 9/17 and 27/50

Using cross product;

[tex]\frac{9}{17}=\frac{27}{50}\\9*50=17*27\\450=459[/tex]

The ratio does not form proportion.

B. 12/35 and 24/75

[tex]\frac{12}{35}=\frac{24}{75}\\12*75=24*35\\900=840[/tex]

The ratio does not form proportion.

C. 15/55 and  33/121

[tex]\frac{15}{55}=\frac{33}{121}\\15*121=33*55\\1815=1815[/tex]

The ratio form a proportion.

D. 12/35 and 20/70​

[tex]\frac{12}{35}=\frac{20}{70}\\12*70=20*35\\840=700[/tex]

The ratio does not form proportion.

The right answer is Option C.

Keywords: ratio, proportion

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Answer:

0

Step-by-step explanation:

Answer:

The answer would be 0

Answer:

B is the correct answer

Step-by-step explanation:

use your calculator and or in the problem and it should give you a decimal just go to math. and click 1 and click enter again and it should give you a fraction

Answer:

57=12+3d

d=number of days worked

Answer:

(57-12)3/x=15 days

x=57-12