MATHEMATICS MIDDLE SCHOOL

How do the 7" s" compare in the number 9,741 and1,479

Answers

Answer 1
Answer: in 9741 the 7 stands for the hundreds so it is 700 in 1479 the 7 is in the ones so it stands for good ol' 7
:)
Answer 2
Answer: the first 7 in the hundreds place and the second 7 is in the tens place

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a bag containes 8 white marbels and 48 green marbles. If a representative sample contains 2 white marblesthen how many green marbles would you expect it to contain?

Answers

Answer:

12

Step-by-step explanation:

8 white marbles and 48 marbles

each sample contains 2 white

so first

8 divide 2 = 4

then second

48 divide 4=  12

hope this helps

the bowling alley offers special weekly rates are 5 games for $15, 6 games for $17.55, 7 games for $20.10 and 8 games for $22.65. If this pattern continues, how much wil it cost to bowl 10 games in a week?

Answers

Yes it is a pattern because each time it is adding $2.55 and if you play 10 games you have to pay $27.75
the answer is $27.75

Find the radius of the circle whose equation is x² - 10x + y² - 10y = -1.1
7
49

Answers

Answer:

radius = 7 units

Step-by-step explanation:

We are given the equation;

x² - 10x + y² - 10y = -1

We are required to determine the radius of the circle;

We are going to use completing square method to solve for the radius and the center of the circle.

First we make sure the coefficient of x² and  y²  is 1

x² - 10x + y² - 10y = -1

Then we add the square of half the coefficient of x and y on both sides of the equation;

That is;

x^2- 10x+((-10)/(2))^2 + y^2+- 10y +( (-10)/(2))^2= -1 +((-10)/(2))^2+ ((-10)/(2))^2

Simplifying the equation, we get;

(x-(10)/(2))^2 + (y-(10)/(2))^2= -1+25+25

Thus;

(x-(10)/(2))^2 + (y-(10)/(2))^2= 49

That is;

(x-5)^2 + (x-5)^2 = 49

The equation of a circle is written in the form of;

(x-a)^2+(x-b)^2=r^2

Then (a, b) is the center and r is the radius.

Therefore;

In our case; (x-5)^2+(y-5)^2=49

Then, center = ( 5, 5)

         radius = √49

                    = 7 units

How do you divide 25.20 by 4

Answers

4 will go into 25 six times
that leaves 1.20. 4 goes into 1.20 .3 times
6+.3 is 6.3
6.3 (I used the calculator l)

Which expressions are equivalent to Negative 9 (two-thirds x + 1)? Check all that apply.Negative 9 (two-thirds x) + 9 (1)
Negative 9 (two-thirds x) minus 9 (1)
Negative 9 (two-thirds x) + 1
–6x + 1
–6x + 9
–6x – 9

Answers

Answer: the correct answer is B and F

Step-by-step explanation:

128.34 as a mixed number in simplest form

Answers

128.34
= 128+ 0.34
= 128+ 34/100
= 128+ (34/2) / (100/2)
= 128+ 17/50
= 128 17/50

128.34 written as a mixed number is 128 17/50~
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