MATHEMATICS MIDDLE SCHOOL

Yasmine bought 4 bracelets each bracelet cost 3 Numerical Expressions

Answers

Answer 1
Answer: 4x3= 12 4 is the bracelets 3 is the cost 12 is the total cost
Answer 2
Answer: 3 times 4 is equal 12 So the answers is 12.

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Find the value of x2 − 7x + 9 when x = 6.

The value of the expression when x = 6 is

Answers

Answer:

-21.

Step-by-step explanation:

(6)2-7(6)+9

--> 6x2= 12

--> 7x6= 42

Rewrite the expression:

--> 12-42+9

Solve:

--> 12-42= -30

--> -30+7= -21

What is the surface area of the prism?A. 82 yd.^2
B. 90 yd.^2
C. 96 yd.^2
D. 108 yd. ^2

Answers

Surface area of the prism= surface area of the base + surface area of the two triangles + surface area of the two rectangles.

Surface area of the base=(3 yd * 7 yd)=21 yd².
Surface area of the two triangles=2*(3 yd * 4 yd)/2=12 yd².
Surface area of the two rectangles=(7 yd * 5 yd) + (7 yd * 4yd)=35 yd² + 28 yd²=
=63 yd²

Surface of the prism=21 yd² + 12 yd² + 63 yd²=96 yd²

Remember:
surface area of a triangle=(base * height)/2
surface area of a rectangle=base *  height.

Answer: C.96 yd²

Answer:

C.96 yd²

Step-by-step explanation:

432 square feet 2/3 is with what's the length

Answers

432 divide by 3. then multiply by two equals 288.

Emilia bought 9/12 pound of sliced salami at the deli counter.Which of the following decimals did the scale show?0.25
0.34
0.7
0.75

Answers

To start this problem, what we need to do is try to simplify the fraction into one we might know already. The best way to go about doing this is to see if we can divide the top and bottom by any of the same numbers. 

We can divide 9 by 1, 3, and 9
We can divide 12 by 1, 3, 4, and 12

Looking back over the  numbers, we can see that both 9 and 12 are divisible by 3, so if we divide both of them by 3, we will get a new fraction! This fraction will be 3/4.

Our next step is to see if we know what 3/4 is. I know 1/4 is .25 because the coin called a quarter is 25 cents, so if I had 3 quarters, I would have 75 cents, so I know know that 9/12 = 3/4 = .75!

there are 33 students in the band there are more 5th grade students than 3rd grade students there is an equal number of 3rd grade and fourth grade students how many third grade students are in the band

Answers

Use A for third graders, B for fourth graders, and C for fifth graders.

33 = A + B + C

Since there are 3 variables, you need to come up with two other equations to substitute in. 

C = 6 + A Since there are six more fifth graders than third graders. 

A = B Since there is an equal amount of third and fourth graders.

Since A is in both equations, then lets put each variable in terms of A. 

B = A

C = 6 + A

So:

A + A + A + 6 = 33

A + A + A = 27 Since you subtract 6 from both sides.

3A = 27 Since you combine all three A's. 

A = 9 Since you divide both sides by three. 

Therefore, since A is a number of third graders, there are 9 third graders.

(Sorry if there's any typos.

Answer:

there are 9 third graders

Step-by-step explanation:

How do you round 5 1/8 to the nearest whole number

Answers

To round you must see if the fraction is greater or less than a half to see if you round up or down. 1/8 is less than 1/2, so you must round down. So the answer is 5.
You look at the fraction: 1/8
You determine if it's closer to 0, 0.5, or 1.
In this case it is closer to 0.
So the answer would be 5. 
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