MATHEMATICS MIDDLE SCHOOL

Alder is ordering invitations for a holiday party. The invitations cost $3.75 each, plus an additional $5.00 fee for printing.Which table represents the cost of the invitations?

Answers

Answer 1
Answer: let the number of invitations be x.
3.75x + 5 = cost of invitations..

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PLEASE HELPThe value of y varies directly with x. When y=30, x=0.75. What is the value of y when x=5.25?

Answers

The value of y when x = 5.25 is 210.

Given that the value of y varies directly with x.

When y = 30, x = 0.75.

We need to find the value of y when x = 5.25,

If the value of y varies directly with x, it means that the relationship between y and x can be expressed as:

y = kx

Where "k" is the constant of proportionality. To find the value of "k," we can use the given information:

When y = 30, x = 0.75:

30 = k × 0.75

Now, solve for "k":

k = 30 / 0.75

k = 40

Now that we have the value of "k," we can use it to find the value of y when x = 5.25:

y = k x

y = 40 × 5.25

y = 210

So, when x = 5.25, the value of y is 210.

Learn more about direct variation click;

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#SPJ3
if x = 5.25 then y = 210

One survey estimates that,on average, the retail value of a mid sized car decreases by8% annually.if the retail value of a car is v dollars today,which expression represents the car value 1year later?

Answers

If the value is 100% of ' v ' today and it decreases 8% in a year,
then the value will be 92% of ' v ' 1 year later.  That's 0.92v .

Work out the circumference of a circle with diameter 1.8 cm.Take it to be 3.142 and give your answer to 1 decimal place.

Answers

Answer: 5.7

Step-by-step explanation:

Multiply the diameter by pi 3.14

A basketball goal is 18 inches in diameter. A basketball has a diameter of about 9.6 inches. What is the difference in circumference between the goal and the center cross-section of a basketball?

Answers

The difference in circumference between the goal and the center cross-section of a basketball is 26.4inches.

It is given that

Diameter of a basketball goal = 18inches

So, the radius will be 18/2 = 9inches

What is the circumference of a circle?

It is the length of the outer periphery of a circle equals 2*π*r, where r is the radius of the circle.

Circumference of goal = 2*π*9 = 56.57inches

Diameter of basketball = 9.6inches

So, the radius of basketball will be 9.6/2 = 4.8 inches

Circumference of cross-section of basketball = 2*π*4.8 = 30.17inches

So, the difference in circumference between the goal and the center cross-section of a basketball = 56.57-30.17 = 26.4inches.

Therefore, difference in circumference between the goal and the center cross-section of a basketball is 26.4inches.

To get more about circles visit:

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8.4  you hsve to subtract 18-9.6 and you get ur answer.  let me know If you  need anymore help

Help! Please tell me if my answers are correct. NOTE- THE ANSWER FOR QUESTION 16 IS A=YX

Answers

15. x-a=y^2
x=y^2+a

16. y=a/x
a=xy
x=y/a
Hi There! :)

Help! Please tell me if my answers are correct. NOTE- THE ANSWER FOR QUESTION 16 IS A=YX

15.Yes you're right! :D

Solve by using the quadratic formula.
3psquared+7p+2=0

Answers

Answer:

-1/3,-2

Step-by-step explanation:

The quadratic formula is [-b±√(b^2-4ac)]/2a.  In this equations 3p^2 is a, 7p is b, and 2 is c.

Then just plug in the numbers.

[-7±√((-7^2)-4(3)(2)]/2(3)

[-7±√(25)]/6

(-7+5)/6  and  (-7-5)/6

-1/3 and -2 are the answers, if you plug these numbers into the original equation, you find that they equal 0 which means that they work.

Answer:

\large\boxed{x=-2\ or\ x=-(1)/(3)}

Step-by-step explanation:

The quadratic formula of a quadratic equation

ax^2+bx+c=0\n\nx=(-b\pm√(b^2-4ac))/(2a)

We have the equation:

3p^2+7p+2=0\to a=3,\ b=7,\ c=2

Substitute:

b^2-4ac=7^2-4(3)(2)=49-24=25\n\n√(b^2-4ac)=√(25)=5\n\nx_1=(-7-5)/(2(3))=(-12)/(6)=-2\n\nx_2=(-7+5)/(2(3))=(-2)/(6)=-(1)/(3)
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