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3 years ago

Solve the proportion using any method.

Mathematics

1 answer:

solmaris [256]3 years ago

4 0

You are given ¾ = blank / 7. You can solve this by,

¾ = blank / 7

Blank = 7 (3/4)

Blank = 21/4

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A family eats at a restaurant. The bill is $42. The family leaves a tip and spends $49.77.

jeka94

Answer;

7.77

Step-by-step explanation:

7 0

3 years ago

Determine the equation of the circle graphed below. ( please help me )

Brums [2.3K]

Answer:

$Equation : \\(x+3)^2 + ( y -2)^2 = 36$

Step-by-step explanation:

For standard form the circle's equation we need the centre of the circle and the radius.

Step 1: Find the centre

If the centre is not given find the end points of the diameter

and then find the mid point.

Let the end points of the diameter be : ( - 3 , 8 ) and ( -3 , -4 )

The mid-point of the diameter is :

$Mid-point = (\frac{-3 + - 3}{2}, \frac{-4+8}{2}) = (-3, 2)$

Therefore, centre of the circle = ( -3 , 2 )

Step 2 : Find radius

$Radius = \frac{Diameter }{2}$

Diameter is the distance between the end points ( -3 , 8) and ( -3 , -4 )

That is ,

$Diameter = \sqrt{(-3-(-3))^2 + ( -4 -8)^2}\\$

$= \sqrt{(-3 + 3)^2 + (-12)^2}\\\\=\sqrt{0 + 144}\\\\=12$

Therefore ,

$Radius = \frac{12}{2} = 6$

Step 3 : Equation of the circle

Standard equation of the circle with centre ( h ,k )

and radius ,r is :

$(x - h)^2+(y -k)^2 = r^2$

Therefore, the equation of the circle with centre ( -3, 2)

and radius = 6 is :

$(x - (-3))^2 + (y - 2)^2 = 6^2\\\\(x + 3)^2 + (y - 2)^2 = 36$

5 0

3 years ago

Find f(-3) it f(x) =x^2

xeze [42]

Answer:

Step-by-step explanation:Replace the variable

x with − 3 in the expression. f ( − 3 ) = ( − 3 ) 2 Simplify (− 3 ) 2 . Remove parentheses. ( − 3 ) 2 Raise − 3 to the power of 2 . 9

4 0

3 years ago

Can someone help me? please asap

Over [174]

Answer:

- 1-4.

1. The students' mouths were opened in shock.

2. They could not believe the box's contents.

3. Today's activity is examining plants.

4. Sam's stomach ached from laughing so hard.

-5-8.

5. The classroom's glass doors were closed.

6. The students were using the school's computers.

7. The principal's coughing disturbed the students and their two teachers.

8. The teachers' robots rushed toward the door.

Step-by-step explanation:

Hope it helps :)

6 0

3 years ago

Read 2 more answers

Kate wants to buy a new bicycle from a sporting goods store. The bicycle she wants normally sells for $400. The store has a sale

algol13

Answer:

$160

Step-by-step explanation:

2/5 x 400 = 160

8 0

3 years ago

Read 2 more answers