Mathematics Middle School

HELP I SUCK SO BAD AT MATH ITS DUE TOMORROW!!!!!

It's # 11,12,13,14,17, and 18

Thanks

HELP I SUCK SO BAD AT MATH ITS DUE TOMORROW!!!!! It's # 11,12,13,14,17, And 18Thanks

Answers

Answer 1
11. 1/81
12. 1/512
13. 1/81
14. 1/125
17. 1/72
18. 189/625

Related Questions

a
22 degrees

b
3 degrees

c
40 degrees

d
20 degrees

Answers

Bisects means it divides in two equal parts. So:

7x - 1 = 4x + 8
3x = 9
x = 3

This problem isn't over, though.

7(3) - 1
20

Because one of the parts equals 2, the whole thing equals double of that, or 40


Hope this helps!
the answer is d.

7x-1=4x+8

3x-1=8

3x=9
x=3

7(3)-1=20°

indira, bonnie and chang all work at the same pet store. indira works every other day. bonnie works every fourth day. chang works every fifth day. today they all work together. how many days will it be until they work together again?

Answers

This is asking for the LCM between 2,4, and 5. It is 20. So, the answer is 20 days.

Hope this helps!

Please answer questions 1 and/or 2, thnx

Answers

55.79 = 0.99d + 39.95

55.79 - 39.95 = 15.84

0.99d = 15.84

0.99d/0.99 = 15.84/0.99

d = 16

2) Equation = 12.6 million = 4(x) + 1 million
12.6 million - 1 million = 11.6 million
11.6 million/4 = x
x = 2900000

hope this helps
1. 39.95 + 0.99d= 55.79

0.99d=55.79-39.95
0.99d= 15.84
d= 15.84/0.99 =16

Ans = 16 DVDs

2. 12600000-1000000= 4p
 
12600000-1000000=4p
12500000=4p
p= 12500000/4
p= 3125000 or 3.125 million

Express 42 and 150 as a product of its prime numbers.

Answers

42 = 3 x 2 x 7

150 = 5 x 5 x 3 x 2

hope this helps

Which problem can be solved using base-10 blocks? A. Simplify x − (x + 2). B. Model the sum of 950 and 26. C. Order 2.7, 3.1, and 2.9 from greatest to least. D. Plot the points (2, 5) and (4, 9).

I need help ASAP

Answers

The answer is B.ejdjshsjdj

To find 12 times 13, I double 13 and halve 12 and then multiply

Answers

No just multiply them 12 times 12 is 144 just add 12 so it could be 12 times 13 and it would be 156
13
x12
——-
26
+130
——-
156

So first you do the back of 12, 2 times the back of 13, which is 6. Then the back of 12, 2 times the front of 13, which is 2. So you get 26. Then you go to the next line and put a zero, then the same thing as you did with the back of 12, but with the front, which is 1. So 1 times 3 and 1 times 1, so you get 13 and the zero you added earlier, 130. So you get 26 and 130, add them to get 156.

A sidewalk is built 12 bricks wide by laying each brick side by side. How many inches wide is this seidewalk if each brick measures 3 7 over 8 inches wide ??

Answers

1 brick = 37/8
37/8 x 12 = 55.5 inches wide

Hope this helps!! :)

Jeanie has a 3/4 piece of ribbon. She needs one 3/8 yard piece and a 1/2 yard piece. Can she cut the piece of ribbon into the two smaller pieces? Explain

Answers

Jeanie cannot cut the piece of ribbon into two smaller pieces. 

[tex] \frac{3}{4} = \frac{6}{8} [/tex] if you multiply the numerator and the denominator for [tex] \frac{3}{4} [/tex] by 2. 
She needs [tex] \frac{1}{2} [/tex] yard piece, which is [tex] \frac{4}{8} [/tex] if you multiply the numerator and the denominator for [tex] \frac{1}{2} [/tex].
Now that all the numbers have the same denominator, you can subtract the numerators which is: 6 - 4 - 3 = -1
This means that she cannot cut the ribbon into two smaller pieces.

~I hope this helped!!

simplify the expression 3^-2/3^-4

Answers

3^-2/3^-4 is = 9 wow that was hard XD


Applying the Power Rule: [tex]x^m[/tex]÷[tex]x^n[/tex] = [tex]x^{m-n}[/tex]

[tex]3^{-2}[/tex]÷[tex]3^{-4}[/tex] = [tex]3^{-2--4}=3^{-2+4}=3^2=9[/tex]


A store manager timed Janette to see how long it would take her to fold and put away a sweater, a shirt, a pair of pants, and a scarf. It took her 26.1 seconds for the shirt, 24.3 seconds for the sweater, 32.8 seconds for the pants, and 18.2 seconds for the scarf. What was the average time it took Janette to fold and put away all four items?

Answers

The Average, or the mean of the times, is the sum of the times divided by the number of times. 

26.1 + 24.3 + 32.8 + 18.2 = 101.4
101.4 / 4 = 25.35 seconds.

25.35 seconds is the average
25.35 seconds. 
26.1+24.3+32.8+18.2=101.4
101.4/4 (the number of items)=25.35 per each item

36 is 75% of what number

Answers

The answer should be 48

The percentage is the method of distributing the numbers in a range from 0 to 100. The number 36 is 75% of 48.

To find the number that 36 is 75% off, use the following steps:

Remember that per cent means "per hundred." So, 75% can be written as the fraction 75/100 or the decimal 0.75.

Let's call the unknown number "x". We want to find the value of "x" that satisfies the equation: 36 = 0.75 * x.

To solve for "x", we need to isolate it on one side of the equation. We can do this by dividing both sides of the equation by 0.75.

36 / 0.75 = (0.75 * x) / 0.75

Simplifying the right side, we get:

36 / 0.75 = x

Evaluating the left side of the equation, we have:

48 = x

Therefore, 36 is 75% of 48.

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What is the value of y?

Answers

64............................
well you know no matter what a triangle will always equal 180 degrees so you take 37 + 79 and you get 116 which you then subtract from the 180 you know a triangle will always be and you will get y=64

one third of a number

Answers

Well the thing is you didn't tell us which number but if it is 12 then i strongly believe that the answer is 3/9
One third of a number is same as n/3 or 1/3 · n

Selena bought 5.62 pounds of meat for $3.49 per pound. What was the total cost of the meat?

Answers

Pounds multiplied by the unit price will solve this problem. Be sure to round your answer to two decimal places; it's money $.

5.62 lbs x $3.49/lb =  $19.61
Simply multiply 5.62lb by $3.49/lb = 19.6138 or 19.61 in short form.

What would be the third step in simplifying the expression 4 2 ÷ (2 · 9) + 5?
divide
exponent
add
multiply

Answers

P
E
M
D
A
S

okay since the first step is parenthesis, the next step would be exponents but you have none so you skip to multiplication, then you divide

divide is your answer

What is a multiplication story for 2x6=

Answers

2x*6=
x=12
2*6=12
But either way. I think that's the answer 

10 power of 1 x 0.23

Answers

10^1=10
10x0.23=final answer=2.3

What are the dimensions of his bedroom

Answers

There are several possibilities to this. Square feet it just area. Some dimensions are 2ft and 90ft, 4ft and 45ft, or possibly 9ft and 20ft.

Solve: 2x + 12 - 7x = -2

Answers

x=14 over 5 that's the answer I got when I did it on paper
2x + 12 - 7x = -2
1. you can either minus or add 7x to 2x 
2. which gives 9x + 12 = -2 
3. minus 12 on both sides
4. gives you 9x +-14  
5. divided -14 by 9

Answer is -1.55 repeatting

Richie has 27apple he buys 12 more apples how many apples does he have how ?

Answers

27 + 12
39

Hope this helps!
Richie has 39 apples

6/20
3/15
15/20
16/32
21/45
Simplest form please

Answers

3/10
1/5
3/4
1/2
7/15
Thanks (:

Salutations!

To simplify fractions, you can either do the prime factorization method, or find the same factors for the simplified numbers.

6/20 = 3/10 

3/15 = 3/5

15/20 = 5/6

16/32 = 1/4

21/45 = 7/15.

Hope I helped (:

Have a great day!

Jeffery read a book with one-fifth the pages of the book Toby read. Which variable expression represents the number of pages in the book Jeffery read?

Answers

t/5 since toby only read 1 fifth of it

Answer:

1/5

Step-by-step explanation:

i took the test its right

Please help me on number 12 :)




Thank you ! :)

Answers

2 divided by 5

2/5

Hope i helped =)

At a bake sale, brownies were sold for .75 each, cookies were sold for .50 each. There were 10 more cookies sold than brownies. The total amount earned was 40. How many brownies and cookies were sold

Answers

 75b + .5c = 40 c = b + 10 .75b + .5(b + 10) = 40 .75b + .5b + 5 = 40 1.25b = 35 b = 28 c = 38.

Which table best represents the steps to solve the equation 8 + = 4?

Answers

Usaully if you add a larger number with a smaller negative number you will get your answer is 8 + -4+4

Y times y of the power to 4

Answers

y * y^4 = y^5

Remember that y equals y^1. Also when multiplying exponents with the same base, add the given exponents. 1+4=5

Final answer: y^5

Which number is prime? Choose each correct answer. 55 56 57 58 59 60 61

Answers

59 and 61 are prime
answerss
The prime numbers are 59 and 61

Round 8.984 to nearest hundredths, tenths, ones and tens

Answers

Hundredths: 8.98
Tenths: 9 whole
ones: 9 whole
tens: there is none
Hundredths = 8.98

Tenths = 9.0

Ones = 9

Tens = 10

Hope I helped :)

James is reading the latest book by his favorite science fiction author. The table shows the number of pages James read over different periods of time. Calculate the proportionality constant from the table in terms of pages per minute.
A) 0
B)1/2
C)8
D)12
Time (minutes)8 16 24
Pages Read 4 8 12

Answers

The proportionality constant from the table in terms of pages per minute is 1/2.

option B.

What is the proportionality constant ?

The proportionality constant from the table in terms of pages per minute is calculated by applying the following formula.

The given time and pages read are;

Time (minutes)-------- 8    16     24

Pages Read   ----------4     8      12

Mathematically, the formula for the proportionality constant is given as;

proportionality constant = pages read / time taken

proportionality constant = 4 pg / 8 min = 8 pg / 16 min =  12pg / 24 min

proportionality constant = 1/2 pg/min = 1/2 pg/min = 1/2 pg/min

Thus, the proportionality constant from the table in terms of pages per minute is calculated by dividing the pages read by the time taken to read the pages.

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It is a commonly used guideline that for the average American child, their maximum adult height will be about twice their height at age 2. Suppose that Micah’s adult height fits the following equation a = 2c – 1, where a represents his adult height and c represents his height at age 2. At age 2 Micah was 35 inches tall. What is Micah’s adult height? Write and solve an equation.

Answers

a=2c-1
a=2(35in)-1
a=70-1
a=69in.
Final answer:

The question is about predicting Micah's adult height based on his height at the age of 2. Using the formula a=2c-1 where 'c' is the height at age 2, we substitute 'c' with 35 (his height at age 2) and calculate. Thus, Micah's adult height is predicted to be 69 inches.

Explanation:

The question asks about Micah's adult height based on the given equation, a = 2c – 1. In this equation, 'a' represents Micah's adult height and 'c' represents his height at age 2. Given that Micah's height at age 2 ('c') is 35 inches, we can substitute this value into the equation to find Micah's adult height ('a').

So, substituting c=35 into the equation gives us: a = 2*35 - 1. Calculating this results in: a = 70 - 1. Therefore, Micah's adult height is predicted to be 69 inches.

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