145 is what percent of 620

Answer:

20.01

Step-by-step explanation:

The mean of 18, 24 and 18.05 is 20.01.

Answer:

4x-15     Rate me 5 stars if its correct

Step-by-step explanation:

Answer:

(4 * x) - 15

Step-by-step explanation:

"15 fewer" means "subtract 15" or - 15

"the product of 4 and a number":

Product is another word for "multiply".

A number is generally set as a variable, "x".

The product of 4 and a number means 4 * x, or 4x.

Set the equation:

4x - 15 is your answer.

~

Answer:

The radius of the base of the cone is 2 units

The slant height of the cone is 4 units

The height of the cone is 2√3 units

The volume of the cone is [tex]\frac{8\sqrt{3}\pi}{3}[/tex]units³

Step-by-step explanation:

* Lets revise the total surface area and the lateral area of a cone

- The lateral area of cone = π r l , where r is the radius of the base

  and l is the slant height of the cone

- The surface area of the cone = π r l + π r², where π r l is the lateral

  area and π r² is the base area

- The cone has three dimensions radius (r) , height (h) , slant height (l)

- r , h , l formed right triangle, r , h are its legs and l is its hypotenuse,

 then l² = r² + h²

- The volume of the con = [tex]\frac{1}{3}[/tex] (π r² h)

* Now lets solve the problem

- We will use the total area to find the radius of the base

∵ TA = 12π

∵ TA = LA + πr²

∵ LA = 8π

- Substitute the value of the lateral area in the total area

∴ 12π = 8π + π r² ⇒ subtract 8π from both sides

∴ 12π - 8π = π r²

∴ 4π = π r² ⇒ divide both sides by π

∴ r² = 4 ⇒ take square root for both sides

∴ r = 2

* The radius of the base of the cone is 2 units

- We will use the lateral area to find the slant height

∵ LA = π r l

∵ LA = 8π

∵ r = 2

∴ π (2) l = 8π ⇒ divide both sides by π

∴ 2 l = 8 ⇒ divide both sides by 2

∴ l = 4

* The slant height of the cone is 4 units

- Use the rule l² = r² + h² to find the height of the cone

∵ r = 2 and l = 4

∵ l² = r² + h²

∴ (4)² = (2)² + h²

∴ 16 = 4 + h² ⇒ subtract 4 from both sides

∴ 12 = h² ⇒ take square root for both sides

∴ h = √12 = 2√3

* The height of the cone is 2√3 units

∵ The volume of the con = [tex]\frac{1}{3}[/tex] (π r² h)

∵ r = 2 and h = 2√3

∴ V = [tex]\frac{1}{3}[/tex] (π × 2² × 2√3) = [tex]\frac{1}{3}[/tex] (π × 4 × 2√3) = [tex]\frac{1}{3}[/tex] (π × 8√3)

∴ V = [tex]\frac{8\sqrt{3}\pi}{3}[/tex]

* The volume of the cone is [tex]\frac{8\sqrt{3}\pi}{3}[/tex]units³

a1+a2+a3=21

(a1=1,a2=3,a3=7)

a1xa2xa3=64

(a1=2,a2=4,a3=8)

Answer:

10x + 4

Step-by-step explanation:

The Total perimeter is 2 * leg measurement + base

P = 2(2x + 3) + 6x - 2           Remove the brackets.

P = 4x + 6 + 6x - 2               Add like terms

P = 10x + 4                           Answer

Answer:

10x + 4

Step-by-step explanation:

An isosceles triangle has two sides equal

Perimeter is the sum of all sides

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

4x + 6 + 6x - 2

10x + 4

Answer:

The correct answer is option D.  85°

Step-by-step explanation:

Here we consider two angles be <1, <2 and < 3, where <1 is the linear pair of angle measures 133° and <2 be the linear pair of angle measures 142°

To find the value of m<1

m<1 = 180 - 133 = 47°

To find the value of m<2

m<2 = 180 - 142 = 38°

To find the value of m<3

By using angle sum property,

m<1 + m<2 + m< 3 = 180  

m<3 =180 - (m<1 + m<2)

 = 180 - (47 + 38))

 = 180 - 85

 = 95°

To find the value of n

Here n and <3 are linear pair,

n + m<3 = 180

n = 180 - m<3

 = 180 - 95 = 85°

Therefore the value of n = 85°

The correct answer is option D.  85°

Answer:

x=2         x = -3

Step-by-step explanation:

x^2 + x - 6 = 0

Factor.  What 2 numbers multiply to -6 and add to 1

-2 *3 = -6

-2+3 = -1

(x-2) (x+3) =0

Using the zero product property

x-2 =0   x+3 =0

x=2         x = -3

Answer:

D. d = 5

Step-by-step explanation:

d = d² - d¹

= 5 - 0

= 5

d = d³ - d⁴

= 10 - 5

= 5

d = dⁿ - dⁿ-¹

The common difference of the given sequence will be 5, i.e. option D.

Arithmetic progression is the sequence of numbers in order, in which the difference between any two consecutive numbers is a constant value. The common difference is the value between each successive number in an arithmetic sequence

i.e. Common difference (d) = Successive term - Previous term

We have,

0, 5, 10, 15, 20, . . .

Here,

a₁ = 0

a₂ = 5

a₃ = 10

a₄ = 15

a₅ = 20

Now,

Find the common difference,

i.e.

Common difference (d) = a₂ - a₁ = 5 - 0 = 5,

Now,

Common difference (d) = a₃ - a₂ = 10 - 5 = 5

Now,

Common difference (d) = a₄ - a₃ = 15 - 10 = 5

Now,

Common difference (d) = a₅ - a₄ = 20 - 15 = 5

Now,

The Common difference is same for all i.e. 5.

Hence, we can say that the common difference of the given sequence will be 5, i.e. option D.

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Answer:

4 7/8 or 4.875

Step-by-step explanation:

1 1/4 + 3 5/8 = 4 7/8 or 4.875

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Hello There!

Your answer is 4[tex]\frac{7}{8}[/tex]

First, I like to always start by adding our whole numbers together so we have 1 and 3 which gives us a sum of 4.

Next, we just have a fraction of [tex]\frac{1}{4}[/tex] and [tex]\frac{5}{8}[/tex]

We an change our 1/4 to 2/8 because it has a common denominator.

Then, we can add 5/8 together and 2/8 together to get us a sum of 7/8.

Lastly move our whole number over and we have a mixed number of 4 and 7/8

To estimate the value of 98.5 x 13, round the final answer to the hundredths position. In this case, round up to 922.00.

To estimate the value of 98.5 x 13, we can use the rounding rule that states if the first digit to be dropped is greater than 5, we round up. In this case, the digit in the thousandths place is greater than 5, so we round up to the hundredths position. Therefore, the estimated value is 922.00.

Answer:

(0,6)

Step-by-step explanation:

we have the point

A(4,-2)

step 1

Find the image after it is reflected over the line y= 2

The distance of the point A to the line y=2 is equal to 4 units

so

The rule of the reflection is equal to

(x,y) ------> (x,2+4)

A(4,-2) ---> A'(4,6)

step 2

Find the image after it is reflected over the line x= 2

The distance of the point A' to the line x=2 is equal to 2 units

so

The rule of the reflection is equal to

(x,y) ------> (2-2,y)

A'(4,6) ---> A''(0,6)

Final answer:

The discriminant of the equation 4x^2+16x+16=0 is 0, indicating that there is one real, repeated root.

Explanation:

To find the discriminant and the number of real roots for the equation 4x^2+16x+16=0, we first recognize it as a quadratic equation of the form ax^2+bx+c=0. The discriminant of a quadratic equation is given by the formula b^2-4ac. In our equation, a=4, b=16, and c=16. Substituting these values into the formula gives us 16^2 - 4(4)(16), which simplifies to 256 - 256, yielding a discriminant of 0. A discriminant of 0 indicates that there is exactly one real root, which is also a repeated or double root.

Answer:

[tex]\large\boxed{(-2z^2-14)-(-12z^2)=10z^2-14}[/tex]

Step-by-step explanation:

[tex](-2z^2-14)-(-12z^2)=-2z^2-14+12z^2\qquad\text{combine like terms}\\\\=(-2z^2+12z^2)-14=10z^2-14[/tex]

Answer:

Properties of Real Numbers ...

Step-by-step explanation:

Commutative Property of Multiplication (Numbers) 2 • 10 = 10 • 2

Associative Property of Addition (Numbers) 5 + (6 + 7) = (5 + 6) + 7

Associative Property of Multiplication (Numbers) 6 • (3 • 2) = (6 • 3) • 2

Additive Identity (Numbers) 6 + 0 = 6

The equation demonstrates the Associative Property of Addition, stating that the grouping of numbers being added does not affect the sum.

The property shown in the equation 3 + (5 + 7) = (3 + 5) + 7 is the Associative Property of Addition. According to this property, the grouping of numbers being added does not affect the sum. In other words, when adding three or more numbers, it doesn't matter how they are grouped in parentheses.

In this specific equation, we are adding 5 and 7 first, which gives us 12. Then, adding 3 to 12 gives us a sum of 15. On the other side of the equation, we first add 3 and 5 to get 8, and then add 8 to 7 to get the same sum of 15.

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Answer:

Step-by-step explanation:

We need to find the value of log4(768).

768 can be written as 3*256

which further can be simplified to 3*4^4

so using the log property log(AB)=log A+ log B

we can write

log4(768) = log4(3)+log4(4^4)

                 =0.7925+4log4(4)

                 =0.7925+4

                  =4.7925

Answer:

Step-by-step explanation:

[tex]\text{Use the Pythagorean theorem to calculate the length of the CB:}\\\\CB^2+BA^2=AC^2\\\\CB^2+6^2=12^2\\\\CB^2+36=144\qquad\text{subtract 36 from both sides}\\\\CB^2=108\to CB=\sqrt{108}\\\\CB=\sqrt{36\cdot3}\qquad\text{use}\ \sqrt{ab}=\sqrt{a}\cdot\sqrt{b}\\\\CB=\sqrt{36}\cdot\sqrt3\\\\CB=6\sqrt3[/tex]

[tex]\text{Use sine to calculate the length of CD:}\\\\sin\theta=\dfrac{opposite}{hypotenuse}\\\\\theta=55^o\\opposite=6\sqrt3\\hypotenuse=CD\\\\\sin55^o\approx0.8192\qquad(look\ at\ the\ picture)\\\\\text{Substitute:}\\\\0.8192=\dfrac{6\sqrt3}{CD}\\\\0.8192=\dfrac{10.3923}{CD}\qquad\text{multiply both sides by}\ CD\\\\0.8192CD=10.3923\qquad\text{divide both sides by 0.8192}\\\\CD\approx12.7[/tex]

Answer:

Length of the square parking plot = 800 m

Step-by-step explanation:

Area of the square parking plot  = 6400 Sq. m

           side * side                         = 6400

          side * side                          = 64 * 100 = 8 * 8 * 10 * 10

                    side                          =√ (8 * 8 * 10 * 10)

                    side                          = 8 * 10 = 80 m

Answer:

Step-by-step explanation:

The intercept form of a quadratic equation y = ax² + bx + c:

[tex]y=a(x-p)(x-q)[/tex]

[tex]\text{x-intercepts:}\ p\ \text{and}\ q\\\\\text{y-intercept}:\ a(-p)(-q)[/tex]

We have the equation:

[tex]y=2x^2-9x-5=(2x+1)(x-5)[/tex]

[tex]2x+1=2\left(x+\dfrac{1}{2}\right)\to y=2\left(x+\dfrac{1}{2}\right)(x-5)[/tex]

[tex]y=2\bigg(x-\left(-\dfrac{1}{2}\right)\bigg)(x-5)[/tex]

Therefore

[tex]a=2\\\\x-intercepts:\ p=-\dfrac{1}{2}\ \text{and}\ q=5\\\\\text{y-intercept:}\ (2)\left(-\dfrac{1}{2}\right)(5)=-5[/tex]

The x-intercepts are -1/2 and 5, and the y-intercept is -5.

The factored form of a quadratic equation is y=(2x+1)(x-5). To find the x-intercepts, we set y=0 and solve for x. Therefore:

The y-intercept is found by setting x=0 and solving for y. So:

Therefore, the correct statement is:

The x-intercepts are -1/2 and 5, and the y-intercept is -5.

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Answer:

8 inches

Step-by-step explanation:

To find the area of a triangle, we use the formula

A = 1/2 bh where b is the length of the base and h is the height

A = 24 and b = 6

24 = 1/2 (6) * h

24 =3h

Divide each side by 3

24/3 = 3h/3

8 =h

The height is 8 inches

The answer is:

The height of the triangle is equal to 8 inches.

[tex]height=8in[/tex]

To find the height of the triangle, we need to use the formula to calculate the area of a triangle, it's given by the following expression:

[tex]Area=\frac{base*height}{2}[/tex]

So, since we already know the area and the base, we need to isolate the height from the formula, so, isolating we have:

[tex]Area=\frac{base*height}{2}\\\\\frac{Area*2}{base}=height[/tex]

We know that:

[tex]Area=24in^{2} \\base=6in[/tex]

Now, substituting we have:

[tex]height=\frac{Area*2}{base}[/tex]

[tex]height=\frac{24in^{2} *2}{6in}=8in[/tex]

Hence, we have that the height of the triangle is equal to 8 inches.

[tex]height=8in[/tex]

Have a nice day!

The expression a/b is evaluated by dividing -6 by -2. Since both numbers are negative, the result is a positive 3.

The problem asks you to evaluate a/b with a=-6 and b=-2. The expression a/b means 'a divided by b'. Thus, to evaluate this expression, you simply divide -6 by -2. Remember that when you divide a negative number by another negative number, the result is positive. So, -6 divided by -2 equals 3.

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We substitute -6 for a, and -2 for b in the expression a/b, obtaining -6/-2, which equals 3 because division of two negative numbers yields a positive number.

To evaluate the expression a/b for a = -6 and b = -2, we can substitute the given values into the expression. This gives us -6 / -2. Dividing a negative number by another negative number gives a positive result. Therefore, -6 / -2 equals 3. The notion that dividing a negative number by another negative number results in a positive number is a fundamental rule in mathematics.

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Step-by-step explanation:

solved in the picture....

Answer:

The factored form of the given expression is [tex]3x(x^2+4x+6)[/tex].

Step-by-step explanation:

The given expression is

[tex]3x^3+12x^2+18x[/tex]

we need to find the factored form of the given expression.

Taking GCF common, we get

[tex]3x(x^2+4x+6)[/tex]

If a quadratic expression is defined as [tex]ax^2+bx+c[/tex] and

[tex]b^2-4ac<0[/tex], then the expression can not be factored further.

In the above parentheses the quadratic expression is [tex]x^2+4x+6[/tex],

[tex]b^2-4ac=(4)^2-4(1)(6)=-8<0[/tex]

It means the quadratic expression is [tex]x^2+4x+6[/tex] can not be factored further.

Therefore the factored form of the given expression is [tex]3x(x^2+4x+6)[/tex].

Answer:

D. 96 inches

Step-by-step explanation:

Perimeter (P) = 2L + 2W , Where L is the length and W is the width.

20 ft = 2L + 2(2 ft)

2L = 20 ft - 4 ft = 16 ft

L = [tex]\frac{16}{2}[/tex] ft = 8 ft

1 ft = 12 inches

8 ft = ?

Cross-multiplying this gives; [tex]\frac{8}{1}[/tex] × 12 = 96 inches

Answer: D) 96 inches.

Step-by-step explanation: To calculate the lenght of James' rectangular yard, we need to isolate L from the given formula:

P=2L+2W

P-2W=2L

[tex]L=\frac{P-2W}{2}[/tex]

Now we replace the given values of P and W in the equation:

[tex]L=\frac{20feet-2*2feet}{2}[/tex]

[tex]L=\frac{20feet-4feet}{2}[/tex]

[tex]L=\frac{16feet}{2}[/tex]

[tex]L=8feet[/tex]

1feet=12inches so:

L=8feet*12inches/1feet

L=96 inches.

Answer:

0.75 so FALSE

Step-by-step explanation:

It is the only number that could be left after 0.5 and 0.25

Answer:

7x+y=37

Step-by-step explanation:

You basically just add the numbers, So you add 5 and 2 and then you subtract 2 from 3 which is 1 and then you add 21 and 16

Answer:

150

Step-by-step explanation:

Given that;

Company A offers;

Salary= $ 17000

commission= $100 per tv set

Company B offers;

Salary= $29000

Commission = $ 20 per tv set

Let the number of tv set sold to be= x

To solve this problem, the amount obtained after selling for A option should be equal to B option

Form equations

[tex]17000 +100 x = 29000 + 20x\\\\\\100x-20x= 29000-17000\\\\\\80x=12000\\\\\\x=12000/80 = 150[/tex]

The number of televisions sold for the options to be equal = 150

Answer:

Amara needs to sell 150 televisions to make both options earnings equal.

Step-by-step explanation:

Let the number of television sold be = x

For company A:

Salary is $17,000 plus a $100 commission for each television she sells.

Equation becomes:

[tex]f(x)=17000+100x[/tex]

For company B :

Salary is $29,000 plus a $20 commission for each television she sells.

Equation becomes:

[tex]f(x)=29000+20x[/tex]

So, to calculate how many televisions would Amara need to sell for the options to be equal, we will equal both the equations.

[tex]17000+100x=29000+20x[/tex]

=> [tex]100x-20x=29000-17000[/tex]

=> [tex]80x=12000[/tex]

x = 150

So, Amara needs to sell 150 televisions to make both options earnings equal.

We can check this :

[tex]17000+100(150)=29000+20(150)[/tex]

=> [tex]17000+15000=29000+3000[/tex]

=> [tex]32000=32000[/tex]

Answer:

(0.1,1.1)

Step-by-step explanation:

we have

[tex]f(x)=3^{x}[/tex]

[tex]g(x)=-log(x)[/tex]

Solve the system of equations by graphing

The solution is the intersection point both graphs

The solution is the point (0.081,1.093)

see the attached figure

Round to the nearest tenth ----> (0.1,1.1)

Answer:

Step-by-step explanation:

B

Perimeter: 2W +2L = 48

Area = L x W = 140

Rewrite the area to solve for L: L = 140/W

Now replace that in the perimeter formula:

2W + 2(140/W) = 48

Divide all terms by 2:

W + 140/W = 24

Divide both sides by W:

140 + w^2 = 24w

Subtract 24w from both sides:

w^2 - 24w + 140 = 0

Factor:

(w-10) (w-14) = 0

Solve for each w for 0:

10-10 - 10 and 14-14 = 0

So the 2 dimensions are 10 and 14 cm.

14 isn't a choice so the answer is B. 10 cm.

ANSWER

5.2387 and 5.2437

EXPLANATION

To round a decimal to the nearest hundredth means we should round to two decimal places.

To round to two decimal places we consider the third decimal place.

When we round 5.2387 to the nearest hundredth, we obtain 5.24 because the third decimal place is greater than or equal to 5 so we round up.

When we round 5.2437 to the nearest hundredth, we get 5.24 because the third decimal place less than 5 so we round off.

In fact there are infinitely many decimals that will round to 5.24 when rounding to the nearest hundredth.

Answer:

less than 17

Step-by-step explanation:

For any triangle, the sum of any two sides of a triangle has to be greater than the third side. So, the only answer that works is less than 17

The third side will be greater than 7 cm but less than 17 cm.

Option D is correct

In Geometry, a triangle is a three-sided polygon that consists of three edges and three vertices. The most important property of a triangle is that the sum of the internal angles of a triangle is equal to 180 degrees. This property is called angle sum property of triangle.

According to the question

Length of two sides of a triangle is 5 cm and 12 cm

Sum of there two sides = 5 + 12 = 17 cm

Difference of there two sides = 12 - 5 = 7 cm

The third side will be greater than 7 cm but less than 17 cm.

Option D is correct

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