Mathematics Middle School

Please help me I'm confused on this.

Answers

Answer 1

Answer:

divide by 8

2.25 cubic units

Step-by-step explanation:

3 x 6 half cubes = 18 half cubes

one cubic unit =1/8 cubic units

18/8=2.25 cubic units

Answer 2

Answer:

12.

Step-by-step explanation:

18 ÷ 1 1/2 = 12.

There are 18 half cubes total. It is 18 divided by 1 and a 1/2 equals 12 which is eighteen divided by one and a half equals twelve.

18 divided by 1 1/2 = 12.

Related Questions

Help me please and thank you !

Answers

The answer is C. Why? Well, see below!

A would be incorrect because the problem is asking what the area of the stamp would be. In order to find area, we multiply length and width by each other. The given equation we initially had shows division, and would therefore be incorrect. B would be incorrect because although the equation has the correct evaluation symbol, the formula for identifying length would be L = A / W, which means length equals area divided by width. Because the area is 1/4 in this problem, the expression used for evaluation would be 1/4 divided by 1/5. D is incorrect because, like B, the evaluation expression would be 1/4 divided by 1/5.

Your final answer: Because C is the only problem that gives us a corresponding expression to the initial expression, C is the correct answer. If you need extra help, let me know and I will gladly assist you.

Answer:

Step-by-step explanation:

(A)length of a stamp=1/5foot

wide of a stamp=1/4foot

area of the stamp=?

area of the stamp=length of a stamp *wide of a stamp

=1/5*1/4

=1/20square foot

(B)an area of the room=1/4 square meter

width of the room=1/5meter

length of the room=?

an area of the room=width of the room*length of the room

1/4 =1/5 * length of the room

1/4 = length of the room/5

5/4 =length of the room

length of the room =5/4=1 1/4

(C)the area of the canvas=1/5square yard

width of the canvas=1/4 yard

length of the canvas=?

an area of the canvas=width of the canvas*length of the canvas

1/5 = width of the canvas*1/4

1/5 = width of the canvas/4

4/5 =width of the canvas

width of the canvas= 4/5

(D)length of the rectangular course=1/5mile

area of the rectangular course=1/4square mile

width of the rectangular course=?

an area of the rectangular course

width of the rectangular course*length of the rectangular course

1/4 =width of the rectangular course*1/5

1/4 =width of the rectangular course/5

5/4 =width of the rectangular course

width of the rectangular course=5/4

Rolled oats is packaged in a right circular cylindrical container that has a radius of 6 centimeters and a height of 12 centimeters.

What is the surface area of this container in terms of pi?

Answers

215.9998048202097pi

I got 215. because I actually just did this test

PLEASE HELPPPPPP!!!!!!!!
Jane read 1/4 of a 400-page book. How many pages are left to read?

Answers

Answer: 300 pages are left to read.

Step-by-step explanation: There are 300 pages left to read, as 1/4 of 400 is 100. So far, Jane has read 100 pages.

I hope this helps!!

Answer: 300 pages

Step-by-step explanation: 1/4 of 400 is 100. 400-100=300. Thus, we arrive at our answer.

how much will you have to pay back in total if you borrowed $400 from the bank for a year at 12%

Answers

1) figure out interest amount

400x.12= 48

2) add interest and loan amount

400+48= 448

You would have to pay back $448 in total after one year.

What is the amount on the loan?

The simple interest formula can be expressed as;

I = P × r × t

Where I is interest, P is principal, r is interest rate and t is time.

Given the parameters:

Principal P = $400 (the initial loan amount)

Rate r = 12% = 12/100 = 0.12

Time t = 1 year

Interest = ?

To determine the interest, we can use the above formula for simple interest:

I = P × r × t

Interest = $400 × 0.12 × 1

Interest = $48

Money to be paid back will be:

Amount = Principal + Interest

Amount = $400 + $48

Amount = $448

Therefore, the accrued amount to be paid is $448.

Learn more about simple interest here: brainly.com/question/25845758

#SPJ2

In a regular 52 deck of cards, what is the probability of picking a random spade, a 4 of any suit and then a random diamond with replacement?

Answers

[tex]sample \: space = 52 \: cards \\ spades = 13 \: cards \\ number \: 4s = 4 \: cards \\ diamonds = 13 \: cards \\ note \: that = \\ there \: is \: replacement \\ order \: does \: matter[/tex]

[tex]P( \gamma ) = \frac{13}{52} \times \frac{4}{52} \times \frac{13}{52} = \frac{1}{208} [/tex]

The Answer is 1/208

This is 8th grade math on khan academy, correct answers only ty- 7 points
have a gud day folks

Answers

Answer:

9² or 9^2

Step-by-step explanation:

Because the base is the same on the top and the bottom which is "9", you would either add or subtract the top and bottom exponent based on the arithmetic symbol used.

Because the arithmetic symbol division sign is used, you subtract the top exponent by the bottom giving you the answer nine to the power of two.

Answer:

The correct answer is [tex]9^2[/tex]

Step-by-step explanation:

9 is the base and 7-5=2. so n=2.

100 POINTS+BRAINLIEST 8TH GRADE MATH PT 6: SIMPLIFY THE GIVEN EXPRESSION -I know how to do the distributive property but i don't know the rules to remember when dealing with rearranging subtraction sings like the one in the first set of parenthesis. please tell me how to accurately simplify an expression with those subtraction signs

thanks so much!!

Answers

Answer:

[tex]-x + 9[/tex]

Step-by-step explanation:

Hello!

We want to combine any like terms and distribute the signs properly to the terms in the parentheses.

First, remove the parentheses by distributing the signs:

[tex]-(2x - 1) + 3(x + 4) - 2(x + 2)[/tex][tex]-(2x) - (-1) + 3(x) + 3(4) - 2(x) - 2(2)[/tex]

Remember that negative times negative is positive
[tex]-2x + 1 + 3x + 12 - 2x - 4[/tex][tex]-2x + 3x - 2x + 1 + 12 - 4[/tex][tex]-x + 9[/tex]

The simplified form is [tex]-x + 9[/tex].

Another way to think about the negative sign is by replacing it with -1, so essentially you are multiplying the whole parentheses by -1.

-(2x-1)+3(x+4)-2(x+2)-2x+1+3x+12-2x-4-4x+3x+1+8-x+9

Option D

What is the total amount due after 6 months on an initial loan of $1,400 at 12.5% annual interest.

Answers

Answer: $1487.50

Step-by-step explanation:

hey there again!

Facts:

Principal (starting amount): $1,400

Annual interest rate: 12.5% of the principal. Whenever you get an annual interest rate as a percentage, its always that percentage of the starting amount.

Time given: 6 months, 1/2 a year

the question asks "total amount due' in 6 months. Basically, we want to know how much they will have in their account after 6 months.

Step 1: Find how much interest he will get in 6 months as a percentage.

6 months is 1/2 of a year, so find 1/2 of 12.5

1/2 of 12.5

1/2 x 12.5

0.5 x 12.5

6.25%

Step 2: Find how much interest he gets, but as a number.

Principal: $1400

6.25% of 1400= $87.50

Step 3: Find the total amount of money he will have after 6 months.

he starts with 1400, and gets an additional $87.50 added to his account after 6 months. How much does he have now?

To answer this, add to find the total:

87.50+1400= $1487.50

The answer is 1487.50 :)

Question 8(Multiple Choice Worth 5 points)
(01.03 MC)
Which expression is equivalent to 32.3-52
0
3³

Answers

Answer:

1/3^3

Step-by-step explanation:

The answer is 1/3^3 or 1/27 because 3^2 is 9 and 3^-5 is 1/243. This results in the equation 9 x 1/243. When simplified you get 1/3^3 or 1/27.

1/3^3

3^2(3^-5) = 3^2-5 = 3^-3 = 1/3^3

Karl has 5 blue pencils, 3 yellow pencils and 2 black pencils. If Karl selects 2 pencils at random from his pencil case, without replacement, what is the probability that both pencils are not yellow?

Answers

In total you have 10 pencils but only 2 of them are yellow. Therefore when simplify this, the changes of not picking a yellow pencil is 8/10 which simplify to 4/5. There’s a 4/5 chance neither pencils will be yellow

The probability is 42/90 simplified to 7/15

Equation: probability of first non-yellow pencil x probability of second non-yellow pencil
7/10*6/9= 42/90= 7/15

There are 7 total pencils that are not yellow but because you don’t put the non-yellow pencil back there is a decrease in both the non-yellows and total pencils!

Q.2 - The graph shows the number of paintballs a machine launches, y, in x seconds:

Which expression can be used to calculate the rate per second at which the machine launches the balls?

Answers

PLEASE HELP: What is the sales tax for each item?

Textbook: $20.00

Sales tax: 4%

Answers

Answer:

0.8

Step-by-step explanation:

The tax is calculated as the total price of the object multiplied by the amount of sales tax.

$20*4%=20*4/100=$4/5=$0.8

Hi! I’ll give brainliest to best answer!

Thanks so much in advance!

Answers

I believe the answer is 6!

D-6
(Use BODMAS/PENDMAS/BIDMAS)

PLEASE HELP ME ASAP!!!!!!

Answers

Answer:

Triangles are congruent due to SAS

Angles are congruent due to CPCTC

Step-by-step explanation:

In order to prove the congruency of the angles, we have to prove the congruency of the triangles.

ME=MR is given so that is a side

They share angle M so that is an angle

And, MA=MN which is given so that is a side.

The two triangles are congruent due to SAS postulate

So the angles are equal due to CPCTC

Angles E and R are congruent as they are the corresponding parts of two congruent triangle.

Given is a figure which shows two connected triangles ΔEMA and ΔRMN,

We need to prove ∠E ≅ ∠R.

Considering the triangles,

ME = MR [given]

MA = MN [given]

∠M is common angle in both triangles,

So, ΔEMA ≅ ΔRMN by SAS postulate.

So, ∠E ≅ ∠R by CPCTC.

∠IAK + ∠IAD = 90° (Complementary angles)

62 + ∠IAD = 90°

Subtract 62 to both sides

∠IAD = 90 - 62

∠IAD = 28°

∠IAD = ∠ACB (Corresponding angles are equal)

So,

∠ACB = 28°

∠ACB = ∠GCJ (Vertically opposite angles are equal)

So,

28° = x°

x° = 28°

[tex]\rule[225]{225}{2}[/tex]

Answer:

28 degrees

Step-by-step explanation:

If two lines cross each other, it makes 4 angles, and 2 angles from opposite sides have the same length. Since line KL and line IJ crossed, angle KAI and angle LAJ will have the same angle.

--> Angle LAJ is 62 degrees

If we look closely, there is a triangle ABC, and since the question said that line KL and line FG is perpendicular, the angle ALG will be 90 degrees.

We know that in a triangle, there are three angles, and the angle measures combined equals 180.

Since we know two angles: 90 and 62, we take them away from 180 to find the last angle BCA.

--> 180 - 90 - 62 = 28

--> Angle BCA = 28 degrees

Answer:

Step-by-step explanation:

angle RQS=180-90-34=90-34=56

and then

180-56=x+72

124=x+72

x=52

Therefore, based on the exterior angle theorem, the value of x is: 52

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