Brainiest for An Actuate answer


I Am struggling with two questions

this is the 2nd question i need help with.

Answer:

I think A

Step-by-step explanation:

I'm not really sure but I think it's A assuming the triangle is not an equilateral

Answer:

x-int: (3, 0)

y-int: (0, 2)

Step-by-step explanation:

The x-int is found when y = 0. Set y to 0 to solve for the x-int.

The y-int is found when x = 0. Set x equal to 0 to solve for the y-int.

Answer:

(f+g)(-5)

(f+g)(x) = x²+3x-10+x+5

(f+g)(-5) = (-5)² + 3(-5)-10+(-5)+5

             = 25-15-10-5+5 = 0

(f-g)(3)

(f-g)(x) = x²+3x-10 - (x+5)

          = x²+3x-10-x-5

          = x²+2x-15

(f-g)(3) = (3)²+2(3)-15

          = 9+6-15 = 0

Answer:

Dear Johnson,

Answer to your query is provided below

The expression 3.14 x 10^3 is scientific notation for 3,140.

Step-by-step explanation:

The purpose of scientific notation is to write very large, or very small, numbers with ease.

Calculating scientific notation for a positive integer is simple, as it always follows this notation:

a x 10^b

Follow the steps below to see how 3,140 is written in scientific notation.

Step 1

To find a, take the number and move a decimal place to the right one position.

Original Number: 3,140

New Number: 3.140

Step 2

Now, to find b, count how many places to the right of the decimal.

New Number: 3 . 1 4 0

Decimal Count: 1 2 3

There are 3 places to the right of the decimal place.

Step 3

Building upon what we know above, we can now reconstruct the number into scientific notation.

Remember, the notation is: a x 10^b

a = 3.14 (Please notice any zeroes on the end have been removed)

b = 3

Now the whole thing:

3.14 x 10^3

Step 4

Check your work:

10^3 = 1,000 x 3.14 = 3,140

Answer:

100 kilometers per hour.

Step-by-step explanation:

Since he covered a distance of 250 km in a time range of 2 and a half hours, his average speed in kilometers per hour is 250 / 2.5, which is 100 kilometers per hour.

Answer:

100km / hr

Step-by-step explanation:

Given That:

Time = between 6.00 and 8.30 = 2 1/2 hours  

Distance = 250 k m

We Know that :

Speed  = Distance divided by time.

Unit of speed, appropriate here = km/h

thus, Speed = 250/2.5 = 100km/hr.

Hope this helps

Answer:

The quadratic equation is: [tex]y=x^2-36[/tex]

Step-by-step explanation:

If the roots of the quadratic equation are "-6" and "6", then it must have the following factors:  [tex](x+6)\,\, and \,\,(x-6)[/tex]

Therefore, we can write the equation in factor form as:

[tex]y=a\,(x+6)\,(x-6)[/tex]

where a is a real number constant factor. Now, this equation in standard form will look like:

[tex]y=a\,(x^2+6x-6x-6^2)=a\,(x^2-36)=ax^2-36\,a[/tex]

Therefore, using the information about the leading coefficient being "1" (one), we derive that the constant  factor [tex]a[/tex] must be "1". The final expression for the quadratic becomes:

[tex]y=x^2-36[/tex]

Answer:

A =153.86 cm^2

Step-by-step explanation:

The diameter is 14 so the radius is d/2 = 14/2 = 7

A = pi r^2

A = (3.14) (7)^2

A =153.86 cm^2

Answer:

Step-by-step explanation:

First you take the diameter and cut it in half to find the radius. 14/2 = 7

Next you times the radius to the power of 2. 7^2= 49

Then you times your answer by 3.14. 49*3.14 = 153.86

153.86cm² is your answer

Answer:

8 is -5

9 is (-2,3)

10 is -10

Answer:

108 units²

Step-by-step explanation:

The surface area is the sum of the areas of  all the faces

There are 3 rectangular faces ( base, back and sloping face )

There are 2 congruent triangular faces ( sides )

area of base = 8 × 4 = 32 units²

area of sloping face = 8 × 5 = 40 units²

area of back = 8 × 3 = 24 units²

area of triangles = 2 × [tex]\frac{1}{2}[/tex] × 4 × 3 = 4 × 3 = 12 units²

Thus

surface area = 32 + 40 + 24 + 12 = 108 units²

Answer:

[tex]x=\frac{12}{7} \\y=\frac{12}{5} \\z=-12[/tex]

Step-by-step explanation:

Let's re-write the equations in order to get the variables as separated in independent terms as possible \:

First equation:

[tex]\frac{xy}{x+y} =1\\xy=x+y\\1=\frac{x+y}{xy} \\1=\frac{1}{y} +\frac{1}{x}[/tex]

Second equation:

[tex]\frac{xz}{x+z} =2\\xz=2\,(x+z)\\\frac{1}{2} =\frac{x+z}{xz} \\\frac{1}{2} =\frac{1}{z} +\frac{1}{x}[/tex]

Third equation:

[tex]\frac{yz}{y+z} =3\\yz=3\,(y+z)\\\frac{1}{3} =\frac{y+z}{yz} \\\frac{1}{3}=\frac{1}{z} +\frac{1}{y}[/tex]

Now let's subtract term by term the reduced equation 3 from the reduced equation 1 in order to eliminate the term that contains "y":

[tex]1=\frac{1}{y} +\frac{1}{x} \\-\\\frac{1}{3} =\frac{1}{z} +\frac{1}{y}\\\frac{2}{3} =\frac{1}{x} -\frac{1}{z}[/tex]

Combine this last expression term by term with the reduced equation 2, and solve for "x" :

[tex]\frac{2}{3} =\frac{1}{x} -\frac{1}{z} \\+\\\frac{1}{2} =\frac{1}{z} +\frac{1}{x} \\ \\\frac{7}{6} =\frac{2}{x}\\ \\x=\frac{12}{7}[/tex]

Now we use this value for "x" back in equation 1 to solve for "y":

[tex]1=\frac{1}{y} +\frac{1}{x} \\1=\frac{1}{y} +\frac{7}{12}\\1-\frac{7}{12}=\frac{1}{y} \\ \\\frac{1}{y} =\frac{5}{12} \\y=\frac{12}{5}[/tex]

And finally we solve for the third unknown "z":

[tex]\frac{1}{2} =\frac{1}{z} +\frac{1}{x} \\\\\frac{1}{2} =\frac{1}{z} +\frac{7}{12} \\\\\frac{1}{z} =\frac{1}{2}-\frac{7}{12} \\\\\frac{1}{z} =-\frac{1}{12}\\z=-12[/tex]

Answer:

FBC

Step-by-step explanation:

It's the only one at the front of the box

Answer:

FBC

Step-by-step explanation:

thats what it says on my sheet

Answer:

Step-by-step explanation:

[tex]4x^2-16x-9.\\Writ -16x - as -a -difference\\ 4x^2 +2x-18x -9 \\Factor -out- common- terms\\2x(2x+1)-9(2x+1)\\ Factor -out (2x+1)\\(2x+1)(2x-9)[/tex]

I Hope It Helps :)

Answer:

[tex] \boxed{\sf (2x - 9)(2x + 1)} [/tex]

Step-by-step explanation:

[tex] \sf Factor \: the \: following: \\ \sf \implies 4 {x}^{2} - 16x - 9 \\ \\ \sf Factor \: the \: quadratic \: 4 {x}^{2} - 16 x - 9. \\ \sf The \: coefficient \: of \: {x}^{2} \: is \: 4 \: and \: the \: constant \\ \sf term \: is \: - 9. \: The \: product \: of \: 4 \: and \: - 9 \: is \\ \sf - 36. \: The \: factors \: of \: - 36 \: which \: sum \: to \\ \sf - 16 \: are \: 2 \: and \: - 18. \\ \sf So, \\ \sf \implies 4 {x}^{2} - (18 - 2)x - 9 \\ \\ \sf \implies 4 {x}^{2} - 18x + 2x - 9 \\ \\ \sf \implies 2x(2x - 9) + 1(2x - 9) \\ \\ \sf Factor \: 2x - 9 \: from \: 2x(2x - 9) + 1(2x - 9) : \\ \sf \implies (2x - 9)(2x + 1)[/tex]

Answer:

110 ft  

Step-by-step explanation:

The length of fencing is four times the perimeter of one garden.

The formula for the perimeter of a rectangle is  

P = 2l + 2w

The total perimeter for all four rectangles is

P = 4× (2l + 2w) = 8l + 8w

Data:

 l = 9¼ ft

w = 4½ ft

Calculation:

P = 8l + 8w = 8×9¼ + 8×4½ = 72⁸/₄ + 32⁸/₂ =(72 + 2) + (32 + 4) = 74 + 36 = 110 ft

The total length of fencing is 110 ft.

Answer:

2 sqrt(5)

Step-by-step explanation:

To find the geometric mean to two numbers

sqrt( x*y)

sqrt( 5*4)

sqrt(5) * sqrt(4)

2 sqrt(5)

Answer:

a(8) = -49152

Step-by-step explanation:

Step 1: Find r

-12/3 = 4

Step 2: Write geometric explicit formula

[tex]a_{n} = 3(4)^{n-1}[/tex]

Step 3: Plug in 8th term for n

[tex]a_{8} = 3(4)^{7}[/tex]

a(8) = -49152

Alternatively you can find r then multiply 3 by -4 8 times.

Answer:

24

Step-by-step explanation:

=> 5x+2+2x+10 = 180 (Angles on a straight line add up to 180)

=> 7x+12 = 180

=> 7x = 180-12

=> 7x = 168

Dividing both sides by 7

=> x = 24

Answer:

x= 24

Step-by-step explanation:

(5x +2)° +(2x +10)°= 180° (adj. ∠s on a str. line)

5x+2 +2x +10= 180

7x +12= 180 (simplify)

7x= 180 -12 (-12 on both sides)

7x= 168

x= 168 ÷7

x= 24

Answer:

x = 68

Step-by-step explanation:

If you divided 90 by 45, you can see that the 1st ratio has been multiplied by 2 to get the second ratio. To get x, simply multiply 34 by 2 and you should get 68

Answer:

68

Step-by-step explanation:

Answer:

i think its A but im not sure

Answer:

A =7  B=14

Step-by-step explanation:

AREA OF RING

PERIMETER OF RING

Answer: 7 cookies

Step-by-step explanation:

232 - 57 = 175

175 / 25 = 7

Answer:

7 cookies

Step-by-step explanation:

Answer:

Range: {0,3,6}

Step-by-step explanation:

The range is the output, or in this case, the y values

Range: {0,3,6}

Answer:

The range is {0, 3, 6}

Step-by-step explanation:

The range is the set of the second numbers in the ordered airs.

Answer:

  £53,205

Step-by-step explanation:

Megan paid ...

  0 on the first £11,000

  .20 of the next £43,000 -11,000 = £6400

  .40 of the next £150,000 -43,000 = £42,800

  .45 of the next £158,900 -150,000 = £4,005

So, her total tax bill is ...

  £6,400 +42,800 +4,0005 = £53,205

Megan paid a total of £53,205 in tax.

Answer:

B.

Step-by-step explanation:

A =  C = 40°

40+40+ 4x = 180

4x = 100

x = 25°

Answer:

D = 13 units

Step-by-step explanation:

Using Distance Formula to find the length.

Distance Formula = [tex]\sqrt{(x2-x1)^2+(y2-y1)^2}[/tex]

D = [tex]\sqrt{(2+3)^2+(-5-7)^2}[/tex]

D = [tex]\sqrt{(5)^2+(-12)^2}[/tex]

D = [tex]\sqrt{25+144}[/tex]

D = [tex]\sqrt{169}[/tex]

D = 13 units

Answer:

i think its 13

Step-by-step explanation:

i just plotted the points on a coordinate plane and counted it out its was around 12.8 so i rounded it and its was 13

Answer:

[tex]F=\frac{K Q1Q2}{d^2} \\[/tex]

Step-by-step explanation:

According to coulombs law "the force of attraction or repulsion between two charges Q1 and Q2 in a given medium is directly proportional to the product of their charges and inversely proportional to the square of the distance separating them"

[tex]F=\frac{K Q1Q2}{d^2} \\[/tex]

where

k = constant of proportionality ([tex]9.05*10^9[/tex])

Answer:

it is c

Step-by-step explanation:

Answer:

x=5

Step-by-step explanation:

(the goal is to get x by itself)

subtract x on both sides

5x-11=14

add 11 on both sides

5x=25

divide 5 on both sides

x=5

and check your work by plugging x back in to see if the two sides equal each other.

Step-by-step explanation:

6x-11=x+14

[tex]6x - x - 11 - 14 = 0 \\ 5x - 25 = 0 \\5x = 25 \\ x = 5[/tex]

Answer:

Step-by-step explanation:

[tex]Area = \frac{1}{2} *\frac{base}{height} \\A =\frac{ bh}{2} \\Base = 10\\Height = 13\\A= \frac{10*13}{2} \\\\A = \frac{130}{2} \\A = 65[/tex]

Answer:

60

Step-by-step explanation:

Let's construct the altitude. Since the altitude to the base of an isosceles triangle is the same as the median, we know that the base will be split into 5 and 5. Using Pythagorean Triples the height is 12. The area formula for a triangle is bh / 2 and we know that b and h are 10 and 12 respectively so the answer is 10 * 12 / 2 = 60.

Answer:

The first four terms are:  -3, -1, 1, and 3

Step-by-step explanation:

First 4 terms are:

f(1) = 2 (1) - 5  = -3

f(2) = 2 (2) - 5  = -1

f(3) = 2 (3) - 5  = 1

f(4) = 2 (4) - 5  = 3

Answer:

See explanation

Step-by-step explanation:

Vertex: -b/2a = 8/4 = 2. Plug 2 back into the equation to get (2, -2)

y-intercept: plug 0 for all the x values to get 6. The y intercept is (0,6)

x intercept: factor the equation:

2(x^2 - 4x + 3)

2(x-3)(x-1)       <— by splitting the middle variable

so the x intercepts are (x-3) and (x-1) or 3 and 1.

Axis of symmetry : 2 (the x value of the vertex)

Domain: ARN ( all real numbers)

Range: ARN except y cannot be less than -2.

To graph you simply just plug in x values in a table and get the y values. Then plot them on the graph and draw a smooth curve.

Answer:

y = -1/2x + 2

Step-by-step explanation:

If two lines are perpendicular then the product of their slopes are -1

m1*m2 = -1

where m1 amd m2 is slope of two lines.

_______________________________________

Given line

y = 2x-3\

it is in form of y = mx+c (slope intercept form)

where m is slope and c is y intercept

Thus, slope of line  y = 2x-3 is 2

Now we know that product of two lines are -1

let m be slope of other line

then m*2 = -1

m = -1/2

thus, slope of required line is -1/2

let the line be y = mx+c but m = -1/2

thus

y = -1/2 x + c

given that point(-6,5) lies on it

we use -6 in plca of x and 5 in place of y

5 = -1/2 *-6 + c

=>5 = 3 +c

=> c = 5-3 = 2

Thus, equation that is perpendicular to the line y=2x-3 and passes through the point (-6,5) is y = -1/2x + 2