The diameter of a circle is 10 m. Find its circumference in terms of \piπ.

Answer:

$60 was the price of Zoe's dinner, before sales tax and tip.

Step-by-step explanation:

Answer:

$60 was the price of Zoe's dinner, before sales tax and tip.

Step-by-step explanation:

1. Sales tax = 11% times original price = 0.11 times x= 0.11x

2. Tips for dinner = 20% times original price = 0.20 times x = 0.2x

3. 0.11x + 0.2x = 18.60

4. 0.31x = 18.60

5. x = 60

6. $60 was the price of Zoe's dinner, before everything else

Answer:

C

Step-by-step explanation:

A coefficient of 4 would have to be added in front of (x+1)^2 in order to vertically stretch the function by a factor of 4.

The answer that demonstrates this is choice C: [tex]f(x) = 4(x+1)^2-1[/tex]

The functions stretches vertically by a factor of 4 will be f(x) = 4(x+ 1)² - 1. Then the correct option is C.

Let the point (h, k) is the vertex of the parabola and a is the leading coefficient.

Then the equation of the parabola will be given as,

y = a(x - h)² + k

The quadratic function is given below.

f(x) = a(x+ 1)² - 1

If the value of the leading coefficient lies between 0 to 1. Then the parabola is stretched horizontally.

And if the value of the leading coefficient is greater than one. Then the parabola is stretched vertically.

The functions stretches vertically by a factor of 4. Then the value of the leading coefficient is 4. Then the equation will be

f(x) = 4(x+ 1)² - 1

Then the correct option is C.

More about the equation of parabola link is given below.

https://brainly.com/question/20333425

#SPJ5

Answer:

35x-35y+21

Step-by-step explanation:

.5(20x-50y+36)-.25(-100x+40y-12)

10x-25y+18+25x-10y+3

35x-25y+18-10y+3

35x-35y+18+3

35x-35y+21

35x-35y+21

Step-by-step explanation:

Answer:

D) x = -8

Step-by-step explanation:

All the values less than 7 are included in the number line. The graph on number line is shown in figure attached. In the options given, all values in Option A, B and C are greater than 7 so these cannot be included.

Answer:

80 children

Step-by-step explanation:

(200 * 40) /100 = 80

5x+y=8 equation 1

x+2y=5 equation 2

Subsitute (1,3) in bothe equations if the right side is equal to.the left side of the equation then (1,3) is a solution

5(1)+3=8

1+2(3)=7

7 isn't equal to 5 so 1,3 is NOT a solution for this system of equations

Answer:

No, because substituting the given ordered pair doesn't yield two true expressions

Step-by-step explanation:

:)

Step-by-step explanation:

Let's solve your equation step-by-step.

−2x+8=10

Step 1: Subtract 8 from both sides.

−2x+8−8=10−8

−2x=2

Step 2: Divide both sides by -2.

−2x−2=2−2

x=−1

Answer:

Answer:

-2

Step-by-step explanation:

The coefficient of an equation or expression is any constant that precedes a variable. So, in this case, the only variable is x, so the coefficient is the preceding number, -2.  

4x + 8y = 16

4x = 16 - 8y

4x = 4 (4 - 2y)

x = 4( 4 - 2y)/4

X = 4 - 2y

X = -2y + 4

The functions that are symmetric about the y-axis are;

1) The function in the first option; f(θ) = cos(θ)

2) The function in the third option; f(x) = x²

Reason for the above selection;

Definition;

A function is symmetric about the y-axis is also known to be an even function such that the same value of the function is arrived at when x is replaced with -x

Analysis of the graphs;

First Function Graph; The graph represents the graph of cos (θ)

∴ The function is f(θ) = cos(θ)

The value of the function when x = π, f(π) = -1

Similarly, the value of the when x = -π, f(-π) = -1

f(π) = f(-π)

∴ f(x) = f(-x)

Therefore; the first function is an even function

Second Function Graph; The function of the graph is x = y²

∴ y = √(x)

The value of the function when x = 4, y = f(4) = 2

However, the when x = -4, f(-4) does not exist

f(4) ≠ f(-4)

∴ f(x) ≠ f(-x)

Therefore; the second function is not an even function (the function, x = y², is however symmetric about the x-axis)

Third Function Graph; The function the graph represents is y = x²

The value of the function when x = 2, f(2) = 4

Similarly, the value of the when x = -2, f(-2) = 4

f(2) = f(-2)

∴ f(x) = f(-x)

Therefore; the third function is an even function

From the above, the functions which are symmetric about the y-axis, (even functions) are;

The first and the third functions

Learn more about symmetric functions here;

https://brainly.com/question/1461050

Answer:

first and third ones

Step-by-step explanation:

you`re welcome

Answer:

n=-4

Step-by-step explanation:

[tex]6n+9=-3n-21-6\\6n+9=-3n-27\\9n=-36\\n=-4\\[/tex]

Hope this helps plz hit the crown :D

Answer:20 I believe

Step-by-step explanation:

Answer:

yeah it should be 20 they're correct

Answer:

Step-by-step explanation:

domain represents the numbers at the x endpoints of a graph.

on the graph we see that on the left, the line ends when x is -4

on the right, the line ends when x is 4

the domain is

-4, 4

but notice how on the left there is an open circle

this will be written with a parentheses

( -4, 4

and notice how on the right there is a closed circle

this will be written with a bracket

(-4, 4]

so the answer is C

Answer:

-2

Step-by-step explanation:

Answer:

C. 70 in sq

Step-by-step explanation:

The formula of a trapezoid is the A = a + b / 2 multiplied by height. (a and b are the bases). If you plug in the numbers into the formula, you will get 70.

Answer:

2x= 3x-7

-x=-7

x=7

so, the first option

Step-by-step explanation:

Answer:

This is graph right

Step-by-step explanation:

is this maths or economics

Answer:

r≈2.55

hope this helps!

Answer:

solving the inequality we get [tex]\mathbf{x\geq 3}[/tex]

The graph is attached below.

Option C is correct option.

Step-by-step explanation:

We need to solve the inequality [tex]\frac{7x-3}{9}\geq 8-2x[/tex]

First we will solve the inequality to find value of x

Solving:

[tex]\frac{7x-3}{9}\geq 8-2x[/tex]

Step 1: Multiply both sides by 9

[tex]9(\frac{7x-3}{9})\geq 9(8-2x)\\7x-3\geq 72-18x[/tex]

Step 2: Adding 3 on both sides

[tex]7x-3+3\geq 72-18x+3\\7x\geq 75x-18x[/tex]

Step 3: Add 18x on both sides

[tex]7x+18x\geq 75-+18x\\25x\geq 75[/tex]

Step 4: Divide both sides by 25

[tex]\frac{25x}{25}\geq \frac{75}{25}\\x\geq 3[/tex]

So, solving the inequality we get [tex]\mathbf{x\geq 3}[/tex]

The graph is attached below.

Option C is correct option.

Answer:

-513

Step-by-step explanation:

use gemdas (order of operations) to find your answer!

g- groupings

e- exponents

m- multiplication

d- division

a- addition

s- subraction

3 x 3 = 9

6 x 87 = 522

9 - 522 = -513!

Answer:

261

Step-by-step explanation:

First you have to multiply

[tex]3 \times 3 = 9[/tex]

Second you you have to multiply again

[tex]6 \times 87 = 522[/tex]

Finally you have to subtract

[tex]9 - 522 = - 513[/tex]

Answer:

Put a shaded dot in 9 and an arrow pointing left

Step-by-step explanation:

Answer:

Yes

Step-by-step Explanation:

The image below shows proof that the point (1,3) is part of the inequality y>5/2x-3

Hope this helps! :)

Answer:

I chose B

Step-by-step explanation:

Because it goes north and east, and i got an 84

Answer:

The answer is A

Step-by-step explanation:

because the green arrow represents the 15 miles East, then the blue arrow is 20degrees east of a line straight up and down, so its N 20 E

Step-by-step explanation:

Answer:

40°

Step-by-step explanation:

the ground is a straight line, which is 180°

its just 180°-140°=40°

Answer:

Sorry if this is late but it's 11/15

Step-by-step explanation:

I did it on edg 2020 so ye

Answer:

the first one 11/15

Step-by-step explanation:

Answer:

40.6%

Step-by-step explanation:

discount percentage:

x/y*100

266/655 *100 which is 40.6%

Hope this helps plz hit the crown :D

Answer: 35 kilometers an hour or 21.7 miles per hour

Step-by-step explanation:

Answer:

35/1

Step-by-step explanation:

km/h