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2 years ago

What angle would you need on a pie graph for a section that represented 25% of the

Mathematics

1 answer:

stich3 [128]2 years ago

6 0

Answer: C

Step-by-step explanation:

Use proportion:

360:100=x=25

100x=25*360

x=360/4

x=90

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Which of the following is the solution to the system of linear equations x=2y + 5 x/3-y=4/3

Alex73 [517]

Answer:

(7, 1)

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS
Equality Properties

Algebra I

Solving systems of equations using substitution/elimination

Step-by-step explanation:

Step 1: Define systems

x = 2y + 5

x/3 - y = 4/3

Step 2: Solve for y

Substitute: (2y + 5)/3 - y = 4/3
Multiply 3 on both sides: 2y + 5 - 3y = 4
Combine like terms: -y + 5 = 4
Isolate y term: -y = -1
Isolate y: y = 1

Step 3: Solve for x

Define: x = 2y + 5
Substitute: x = 2(1) + 5
Multiply: x = 2 + 5
Add: x = 7

And we have our final answer!

3 0

1 year ago

Read 2 more answers

Will give brainliest plz help

Dominik [7]

Answer:

$\frac{(x+4)^2}{25}+\frac{(y+3)^2}{9}=1$

Step-by-step explanation:

Given:

Center of the ellipse is, $(h,k)=(-4,-3)$

Minor axis length is, $2b=6$

A vertex of the ellipse is at (1, -3)

Now, distance between the center and the vertex is half of the length of the major axis.

Using distance formula for (-4, -3) and (1, -3), we get:

$a=\sqrt{(1+4)^2+(-3+3)^2}=5$

Therefore, the value of half of major axis is, $a=5$ . Also,

$2b=6\\b=\frac{6}{2}=3$

Now, equation of an ellipse with center $(h,k)$ is given as:

$\frac{(x-h)^2}{a^2}+\frac{(y-k)^2}{b^2}=1$

Plug in $h=-4,k=-3,a=5,b=3$ and determine the equation.

$\frac{(x-(-4))^2}{5^2}+\frac{(y-(-3))^2}{3^2}=1\\\\\frac{(x+4)^2}{25}+\frac{(y+3)^2}{9}=1$

Therefore, the equation of the ellipse is:

$\frac{(x+4)^2}{25}+\frac{(y+3)^2}{9}=1$

6 0

2 years ago

How can you use a coordinate plane to solve perimeter and area problems? Please help me

lana66690 [7]

Well, you can do
area=legnth times widht
perimiter=2(legnth+width)
then you just subsitute x for legnth and y for width then solve
area=xy
perimiter=2(x+y)
then graph and find the intersection to find the solution

6 0

2 years ago

??????????????????????

Degger [83]

Answer:

The total golf balls Jack has now in terms of expression is as below

$a = 3b + 6$

Where a is total number of balls and b is number of balls in each bag.

Step-by-step explanation:

Solution:

let a be the total number of balls and b is the number of balls in each bag.

Number of bags is 3.

So total number of balls before the friend gave is $3\times b$

Now the friend has given him 6 more golf balls then the total number of balls will become 3b + 6.

Therefore, the required expression is

$a = 3b + 6$

3 0

2 years ago

Please help me with this geometry question? Picture is there

Harlamova29_29 [7]

It is a Kite because right now we are learning about that

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2 years ago