what is (7x6)+(4x10)​

Answer:

(2/3)n(n+1)(2n+1)

Step-by-step explanation:

First you have to find the general term formula which is here (2k)^2 which is equal to 4k^2. Sum(k=1 to n) of 4k^2=4•n(n+1)(2n+1)/6

simplified to (2/3)n(n+1)(2n+1)

Answer:

vertex = (2, 1)

Step-by-step explanation:

The equation of a parabola in vertex form is

y = a(x - h)² + k

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

f(x) = 3(x - 2)² + 1 ← is in vertex form

with vertex = (h, k) = (2, 1 )

Answer: $5.00 for 1 day

Step-by-step explanation:

Unit price refers to the price of an item in one unit (one), 1 in quantity in particular. $5.00 goes in daily pricing - 1 day. While the others are pricing in multiple units.

Hope it helped!

Answer:

m = 50

Step-by-step explanation:

Simplify:

9 + m/5 = 19

9 + 1/5m = 19

1/5m + 9 = 19

Subtract 9 from both sides:

1/5m + 9 - 9 = 19 - 9

1/5m = 10

Multiply both sides by 5:

5 ⋅ ( 1/5m ) = ( 5 ) ⋅ (10)

Answer:

D. The minimum y-value of g(x) approaches -3

Step-by-step explanation:

Form a table for values of x with corresponding values for f(x) and g(x)

x                   f(x)=3x²-3                                         g(x)=2^x -3                          

-3                   =3(-3²)-3=24                                       2⁻³ -3 = -2.88

-2                    =3(-2²)-3=9                                        2⁻² -3 = -2.75

-1                     =3(-1²)-3=0                                         2⁻¹-3 = -2.5

0                      =3(0²)-3= -3                                        2⁰ -3 = -2

1                       =3(1²)-3=0                                           2¹ -3 = -1

2                      =3(2²)-3=9                                          2²- 3 = 1

3                     =3(3²)-3=24                                          2³ -3= 5

From the table above, you can see the minimum value of y in g(x)  -2.88 approaches -3

Answer:

x = [tex]\frac{2}{5}[/tex]

Step-by-step explanation:

Given

[tex]\frac{5}{2x}[/tex] = [tex]\frac{25}{4}[/tex] ( cross- multiply )

25 × 2x = 5 × 4

50x = 20 ( divide both sides by 50 )

x = [tex]\frac{20}{50}[/tex] = [tex]\frac{2}{5}[/tex]

Answer:

x = 2/5

Step-by-step explanation:

5/2x} = 25/4 (cross- multiply)

25 × 2x = 5 × 4

50x = 20 (divide both sides by 50)

x = 20/50

x = 2/5

Step-by-step explanation:

When two straight lines intersect, they form 4 angles around the point. It can be seen that there are two angles in terms of x on a straight line, which sum up to 180 degrees. Therefore:

3y + y + 88 = 180 and 6x + 35 + 8x - 23 = 180.

Solving for x and y gives:

4y = 92 and 14x = 168.

y = 23 and x = 12.

Substituting the values back in the expression gives the angles:

XAW = 3(23) = 69 degrees.

WAY = 23 + 88 = 111 degrees.

ZAY = 8(12) - 23 = 73 degrees.

XAZ = 6(12) + 35 = 107 degrees.

The problem in this question is that whenever straight lines intersect, they form the vertical opposite angles. The vertical opposite angles are equal. In this question, angle XAW = angle ZAY and angle WAY = angle XAZ. However, in this question, these angles are not equal. (69 is not equal to 73 and 111 is not equal to 107). Hence, this is the problem in the question!!!

It appears that you are asking for a solution to a mathematical problem involving variables x and y and are referencing a figure which seems to be related to the problem. However, the values for x and y are not provided, and the figure in question is also missing from your message.
To solve for x and y, we need the full details of the problem including the specific mathematical equations or relationships that involve x and y. If there is a diagram or figure associated with the problem, the details about the figure such as angles, sides, shapes, or any labels are crucial in order to provide a solution.
Without this information, I cannot provide a correct solution to the problem.
To assist you better, please provide the complete problem statement with all necessary details. If there are equations that need to be solved, specify them. If there is a geometric figure involved, please describe it or provide the relevant measurements and properties that relate to x and y.
Once you provide the full context of the problem, I would be glad to help you find the value of x and y and also explain what might be wrong with the figure, if applicable.

Answer:

17(21) - 14(20) = 357 - 280 = 77 ft²

The correct answer is I.

Answer:

The range is [tex](0,\infty)[/tex]  (in interval notation).

The range is [tex]0<y<\infty)[/tex] or [tex]y>0[/tex] (in inequality notation).

The range is all real numbers greater than 0  (in words).

Step-by-step explanation:

[tex]5^{x}[/tex] we get close to 0 but will never be 0.  [tex]5^{x}[/tex] will also never be negative.

[tex]5^{x}[/tex] is positive for any real input [tex]x[/tex].

Here is a table of values to help try to convince you we are only ever going to get positive outcomes.

[tex]x[/tex]  |  [tex]5^x[/tex]

-4                 5^(-4)=1/625

-3                 5^(-3)=1/125

-2                 5^(-2)=1/25

-1                  5^(-1)=1/5

0                  5^0=1

1                   5^1=5

2                  5^2=25

3                  5^3=125

4                  5^4=625

You can see the y's are increasing as you increase the x value.

Even if you plug in really left numbers on the number like -200 you will still get a positive number like [tex]5^{-200}=\frac{1}{5^{200}}[/tex]. This number will be really close to 0.  You can go more left of -200 and the outcome will be even closer to 0.

I'm just trying to convince you on the left side the y's will approach 0 but never cross the x-axis on the right side the numbers keep getting larger and larger.

The range is [tex](0,\infty)[/tex]  (in interval notation).

The range is [tex]0<y<\infty)[/tex] or [tex]y>0[/tex] (in inequality notation).

The range is all real numbers greater than 0  (in words).

You can also look at the graph and see that the y's for this equation only exist for number y's greater than 0.  You only see the graph above the x-axis.

Answer:

The range is f(x) = all real values above 0.

In interval notation it is (0, ∞).

Step-by-step explanation:

5^x can have any value above 0 . It cannot be negative or 0.

Answer:

Step-by-step explanation:

[tex]25x^2-16=5^2x^2-4^2=(5x)^2-4^2\\\\\text{use}\ a^2-b^2=(a-b)(a+b)\\\\=(5x-4)(5x+4)[/tex]

The correct product which is equivalent to 25x² - 16 is,

⇒ (5x + 4) (5x - 4)

To multiply means to add a number to itself a particular number of times. Multiplication can be viewed as a process of repeated addition.

Given that;

The expression is,

⇒ 25x² - 16

Now, We can simplify as;

⇒ 25x² - 16

⇒ (5x)² - 4²

⇒ (5x + 4) (5x - 4)

Thus, The correct product which is equivalent to 25x² - 16 is,

⇒ (5x + 4) (5x - 4)

Learn more about the multiplication visit:

https://brainly.com/question/10873737

#SPJ7

[tex]\large\boxed{9\,\text{boys and}\,12\,\text{girls}}[/tex]

In this question, we're trying to find how many boys and girls are in the class.

Lets get some important information that will help us to answer the question:

Important information:

With the information above, we can solve the question.

To make this easier, we could turn the fractions into percents.

[tex]3/7 = 0.42857\,\, \text{or}\,\, 0.43 = 43\%\,\, \text{This is for boys}\\\\4/7 = 0.571428\,\, \text{or}\,\, 0.57 = 57\%\,\, \text{This is for girls}[/tex]

Now, we could just multiply 21 by the right decimal in order to get the right amount of boys and girls in Mrs. Clark's classroom.

[tex]21 *0.43=9\,\,\text{boys}\\\\21*0.53=12\,\,\text{girls}[/tex]

When you solve, you would figure out that there are 9 boys and 12 girls in Mrs. Clark's class.

Answer:

The equation that represents the new path is y=(1/2)x-2

Step-by-step explanation:

step 1

Find the slope of the give line

we have

y=-2x-7

so

the slope m is equal to

m=-2

step 2

Find the slope of the perpendicular line to the given line

Remember that

If two lines are perpendicular, then their slopes are opposite reciprocal of each other

so

we have

m=-2 -----> slope of the given line

therefore

The slope of the perpendicular line is equal to

m=1/2

step 3

With m=1/2 and the point (-2,-3) find the equation of the line

y-y1=m(x-x1)

substitute

y+3=(1/2)(x+2)

y=(1/2)x+1-3

y=(1/2)x-2 -----> equation that represent the new path

Answer:

Y= 1/2x-2

Step-by-step explanation:

Apex

Hope this helps Have a nice day

Answer:

The percentage change is 7.67%

Step-by-step explanation:

Cost of stock in a restaurant when bought= $300

Cost of stock in a restaurant now = $323

Change in cost = 323 -300 = $23

The percentage change is = (change in cost/Cost of stock in a restaurant when bought) * 100

The percentage change is = (23/300) * 100 = 7.67 %

The percentage change is 7.67%

To calculate the percentage change in the value of Jorge's stock, you follow these steps:
1. Find the change in value by subtracting the initial value from the current value.
2. Divide the change in value by the initial value to get the fraction that represents the change.
3. To find the percentage change, multiply the fraction from step 2 by 100.
Let's do this for Jorge's stock:
1. Change in value: \( $323 - $300 = $23 \)
2. Fraction of change: \( \frac{23}{300} \)
3. Percentage change: \( \left(\frac{23}{300}\right) × 100 \)
Now let's compute the percentage change:
\( \left(\frac{23}{300}\right) × 100 = \left(\frac{23}{3}\right) \)
After calculating this, you would get the percentage change as:
\( \frac{23}{3} = 7.666... \)
Rounded to two decimal places, the result would be 7.67.
So the complete statement is:
The percentage change is 7.67%.

To find the distance from the bear to the base of the waterfall, we can use the tangent function, which relates the angle of depression to the distance. Using the given angle of depression of 27° and height of 365 feet, we can calculate that the bear is approximately 632 feet from the base of the waterfall.

To find the distance from the bear to the base of the waterfall, we can use the tangent function, which relates the angle of depression to the distance.

In this case, we have an angle of depression of 27° and a height of 365 feet.

Let's denote the distance we're trying to find as x.

The tangent of the angle of depression is equal to the opposite side (365 feet) divided by the adjacent side (x).

So we can set up the equation tan(27°) = 365/x and solve for x.

Rearranging the equation, we have x = 365/tan(27°). Plugging in the values and using a calculator, we find that x is approximately 632 feet.

The bear is approximately 717 feet away from the base of the waterfall.

To find out how far the bear is from the base of the waterfall, use trigonometry, specifically the tangent of the angle of depression. Tangent relates the opposite side and the adjacent side in a right triangle.
1. Given Information:
  - Height of the waterfall (opposite side), h = 365 feet.
  - Angle of depression, [tex]\( \theta = 27\textdegree[/tex].
2. Formulate the Tangent Function:
  The tangent of an angle in a right triangle is given by [tex]\( \tan(\theta) = \frac{\text{opposite}}{\text{adjacent}} \)[/tex].
  So in our case, [tex]\( \tan(27\textdegree) = \frac{365}{d} \)[/tex].
3. Solving for d (the distance from the base of the waterfall to the bear):  
  Rearranging for d:  
  [tex]\[ d = \frac{365}{\tan(27\textdegree)} \][/tex]
4. Calculate the Value:
  Using a calculator to find [tex]tan(27\textdegree)[/tex] which is approximately 0.5095.  
  [tex]\[ d = \frac{365}{0.5095} \approx 716.5 \text{ feet} \][/tex]
5. Round to the Nearest Foot:  
  [tex]\[ d \approx 717 \text{ feet} \][/tex]
So, the distance between the bear and base of the waterfall is approximately 717 feet.

Answer:

5x^3 +2x -1

Step-by-step explanation:

f(x)=5x^3-2 and g(x) = 2x+1

(f+g)(x) = 5x^3-2 + 2x+1

Combine like terms

           = 5x^3 +2x -1

Answer:

U' = (-4,-5)

V' = (-6,-2)

Step-by-step explanation:

Vertex U has coordinates

U = (-4,5)

Vertex V has coordinates

V = (-6,2)

When a quadrilateral is reflected across x- axis the sign of x coordinate remains same and sign of y coordinate changes.

So, U= (-4,5)

then U' is:

U' = (-4,-5)

V = (-6,2)

then V' is

V' = (-6,-2)

Answer:

(-4, -5) and V' is at (-6, -2)

Answer:

y-intercept of y=4x-3 is -3

Step-by-step explanation:

The given equation is:

y = 4x -3

The equation is in slope-intercept form.

The standard equation of slope-intercept form is:

y = mx + b

where m is the slope and b is the y-intercept

So, comparing the given equation with the standard equation the y-intercept is -3

y-intercept of y=4x-3 is -3

Answer:

Step-by-step explanation:

The y intercept of any equation that is a function is the y value taken on when x = 0

So in this case it is y = - 3 because 4*0 = 0. All that is left for y is y = -3.

The point of interception is (0.-3). The way to confirm many answers is to graph the point.

Answer:

456+56+54+4+4

Step-by-step explanation:

65+465+5+56

sorry, for the 4 items i got it wrong.

5 items: 1 dog bone, 3 water bowls, 1 collar

2 items: 1 box of dog food, 1 collar

If you know Heron's formula, this is easy.

[tex]\text{area}=\sqrt{s(s-6)(s-10)(s-14)}=15\sqrt3[/tex]

where [tex]s=\dfrac{6+10+14}2=15[/tex] is the semiperimeter of the triangle.

The area is also equal to half the product of the base and height of the triangle, which happen to be

[tex]15\sqrt3=\dfrac{14x}2\implies x=\dfrac{15\sqrt3}7\approx3.711[/tex]

so the answer is B.

Answer:

The perfect square of 3*4 is 9*16

Step-by-step explanation:

A perfect square is a number that can be expressed as the product of two equal integers.

For example 64 is a perfect square because if we multiply 8 two times we will get 64.

Thus the given expression is 3 * 4.

To find perfect square we square the numbers:

3² = 3*3 = 9

4² = 4*4 = 16

Thus the perfect square of 3*4 is 9*16 ....

Answer:

[tex]9x^8[/tex]

Step-by-step explanation:

We need to find perfect square of the root [tex]3x^{4}[/tex]

To find the perfect square, we need to square the root  [tex]3x^{4}[/tex]

[tex](3x^{4})^2[/tex]

Now let's use  exponent power rule and simplify.

[tex](a^{m})^n = a^{mn}[/tex]

= [tex]3^2x^{4*2} = 9x^8[/tex]

Therefore, [tex]9x^8[/tex] is perfect square of the root [tex]3x^4.[/tex]

Answer:

I found the image of this problem. Its side measure is 13.  The octagon can form 8 triangles. Its apothem can serve as the height of the triangle. We need to get the area of the triangle and multiply it by 8. We then deduct the area of the square from the total area.

Area of a triangle = (height * base) / 2

A = (15.69 * 13) / 2

A = 203.97 / 2  

A = 101.985 sq. units

101.985 x 8 = 815.88 sq. units

Area of the square = s²

A = 13²

A = 169 sq. unit

Area of the shaded region: 815.88 sq. unit - 169 sq. unit = 646.88 sq. unit

Step-by-step explanation:

Answer:

Step-by-step explanation:

[tex]y=-3x-9\qquad(1)\\\\y=\dfrac{1}{3}x-39\qquad(2)\\\\\text{Substitute (1) to (2)}\\\\-3x-9=\dfrac{1}{3}x-39\qquad\text{multiply both sides by 3}\\\\-9x-27=x-117\qquad\text{add 27 to both sides}\\\\-9x=x-90\qquad\text{subtract}\ x\ \text{from both sides}\\\\-10x=-90\qquad\text{divide both sides by (-10)}\\\\x=9[/tex]

[tex]\text{Put the value of x to (1):}\\\\y=-3(9)-9\\\\y=-27-9\\\\y=-36[/tex]

Answer:

It is A

Step-by-step explanation:

Answer:

y - 1 = (1/3)(x + 1)

Step-by-step explanation:

Look carefully at (0, -3) and (2, 3).  As we move from the first to the second, x increases by 2 (from 0 to 2) and y increases by 6 (from -3 to 3).  Therefore, the slope of this line is m  = rise / run, or m = 6/2, or m = 1/3.  Both lines have the same slope, 1/3, because they are parallel.

Now let's apply the point-slope form of the equation of a straight line.  Here the point in question is (-1, 1) and the slope is 1/3.  Therefore, we have:

y - 1 = (1/3)(x + 1)

Answer:

Step-by-step explanation:

Answer:

Option 90°

Step-by-step explanation:

AB is the perpendicular bisector of XY

The result of intersection will give 4 right angles

So,the measure of the angle of intersection when AB is the perpendicular bisector of XY = 90°

See the attached figure.

Answer:

f(x)=-3x+4

Step-by-step explanation:

We need to solve for y.

9x+3y=12

Subtract 9x on both sides.

3y=-9x+12

Divided both sides by 3.

y=-3x+4

Replace y with f(x).

f(x)=-3x+4

Answer:

[tex]f(x)=-3x+4[/tex]

Step-by-step explanation:

the function represented by [tex]9x + 3y = 12[/tex]

To write the given equation in f(x), we need to solve for y

Lets solve the given equation for y

[tex]9x + 3y = 12[/tex]

Subtract 9x from both sides

[tex]3y =-9x+12[/tex]

Now divide whole equation by 3, divide each term by 3

[tex]y =-3x+4[/tex]

To write it as a function , finally we replace y with f(x)

[tex]f(x)=-3x+4[/tex]

14 more points. Do 42-28.

Answer:

Option A. ∠ECB=25°

Step-by-step explanation:

we know that

The measurement of the outer angle is the semi-difference of the arcs it encompasses.

so

∠ECB=(1/2)[arc DB-arc EB]

substitute the given values

(x+10)°=(1/2)[146°-(6x+6)°]

solve for x

2x+20=140-6x

2x+6x=140-20

8x=120

x=15

Find the measure of angle ECB

∠ECB=x+10=15+10=25°

Answer:

25

Step-by-step explanation:

Answer:

see below

Step-by-step explanation:

Take the 4 lb container.  Pour out rice and fill the 3 lbs container.  What is left in the 4 lb container is 1 lb  (4-3 =1)

Empty the 3 lbs container and put the 1lbs into it

Now measure rice into the 4 lbs container

We  have 1lbs ( in the 3lbs container)

and 4 lbs ( in the 4 lbs container)

for a total of 5 bs

Answer:

A

Step-by-step explanation:

Under a reflection in the x- axis

a point (x, y ) → (x, - y )

Hence

F(- 2, - 1 ) → F'(- 2, 1 )

G(2, 2 ) → G'( 2, - 2 )

H(4, - 3 ) → H'(4, 3 )