Mathematics Middle School

Which expression is equivalent to -1/2(1/4x-3/8)?

A.-1/8x+3/16

B.-1/8x+3/8

C.1/8x-3/16

D.1/8x-3/8

Answers

Answer 1
A is the correct answer
Answer 2

Answer:

A. -1/8x + 3/16

Step-by-step explanation:

Related Questions

in a certain chemical the ratio of zinc to Copper is for 211 a jar of the chemical contains 385 grams of copper how many grams of zinc does it contain.

Answers

Answer: well what are my choices?

Step-by-step explanation:

Find the perimeter of the trapezoid shown.



A. 23.5 m
B. 20 m
C. 12 m
D. 8 m

Answers

Answer:

B

Step-by-step explanation:

5+7+4+4=20

The perimeter is B, 20 m. To find the perimeter you need to add all of the edge lengths! Hope this helps!

Dont use me for points please

Answers

Answer:

1. is 351.25 ft^2.

2. is 72.4 rounded up to 73 sections.

3. is 450 meters.

4. is $129.

I need help!! ASAP!! (Classify each number as rational or irrational.)

Answers

Don’t click the link btw it’s a virus

Rational
Rational
Irrational
Irrational
Rational
rational
rational
irrational
irrational
rational

would you pls answer this question?

Answers

Answer:

24÷6= 4

so h= 3×4= 12feet

12 feet......... .....

Please help me I am stuck on question C.

Answers

The answer is B
Step by Step Equation

Write an explicit formula for a , the nth term of the sequence 7, 14, 28, ...

Answers

Answer:

The sequence 7, 14, 28, ... is a geometric sequence with first term 7 and common ratio 2. The explicit formula for a geometric sequence is a_n = a_1 r^(n-1), where a_n is the nth term, a_1 is the first term, and r is the common ratio. In this case, a_n = 7 (2)^(n-1).

Here are the first few terms of the sequence:

n = 1: a_1 = 7

n = 2: a_2 = 14

n = 3: a_3 = 28

n = 4: a_4 = 56

n = 5: a_5 = 112

As you can see, the formula works for all values of n.

Step-by-step explanation:

Nicholas has a collection of books. He has 115 fantasy and science-fiction books. These books are 46% of his collection. How many books does he have in his collection?

Answers

Answer:

i think 250

Step-by-step explanation:

52.9 books



The way you find the percentage of something is by multiplying the percentage and the number you want to find the percentage of. 115 x 46% = 52.9. 52.9 is 46% of 115. :D

Write "a number y minus 75" as an algebraic expression.


y – 75


y + 75


75y


75÷y


75 – y

Answers

It’s y-75 because y represent a number
Y-75 is the answer ur welcome

BRAINIEST FOR CORRECT ANSWER

Please solve these all for me i really need them

Answers

Alright! What name is your book and what page?

Answer:

9: 5y 10: 40x-4 11: 992a+5b 12: 24 list A: 24, 16, 21 list B 16, 24, 21

Step-by-step explanation:

I don’t have the rest but all of the problems are really easy

You are a waiter at a restaurant. A family had a bill of $116.17. They leave you a 20% tip. How much of a tip did you get?

Answers

Answer:

Hello there! :) The tip they would leave you would be of $23.23

Step-by-step explanation:

The first step is to devide 116.17 by 100, which would equal 1.1617, which is obviously not your answer or a valid amount of money. But, you now take this 1.1617 by 20. Why? Becuase 20% is the same as 20 out of 100. Now you multiply 1.1617 × 20 and you will get $23.23.

Example on how to solve:


To figure out the tip, you need to find 20% of $52.60.
0.2×52.6=10.52
You should leave $10.52 for the waiter if you want to leave him exactly 20%.

To figure the tax, you need to find 8% of $52.60.
0.08×52.6=4.208
Next, add them up:
52.6+10.52+4.208=67.328
The total bill, including tax and tip, will be $67.33.

IM STRUGGLING PLZ HELP

Answers

Answer:

Height= 3ft

Step-by-step explanation:

Height of the scale drawing = 2 inches

1 inch = 1.5ft of actual playhouse

if 1 in = 1.5ft, then 2 in = 3ft because 1.5 x 2 = 3

The height is 3feet.

Pls help meeeee dew 5 minutes ago!!!

Answers

h=2 and h>1, hope that helps

Answer:

D

Step-by-step explanation:hope this helps...lilshorty

whats the slope and y-intercept sorry i keep getting it wrong

Answers

Answer:

-2 & 3/2

Step-by-step explanation:

=> -4x - 2y = -3

=> -4x + 3 = 2y

=> (-4/2)x + (3/2) = y

Compare this to y=mx+c

m=slope = -4/2 = - 2

y-intercept = c = 3/2

Answer:

2 & 3/2

hope this helps have a great rest of your day!

Step-by-step explanation:

giving brainliest to right answer <3

Answers

Answer:

i belive so it is B.

Step-by-step explanation:

tell me if am wrong

What is the area of this polygon?
A) 24 cm2
B) 16 cm2
C) 40 cm2
D) 18 cm2

Answers

Answer:

C) 40 cm²

Step-by-step explanation:

area of top triangle = 1/2 x 8 x 6 = 24 cm²

area of bottom triangle = 1/2 x 8 x 4 = 16 cm²

24 cm² + 16 cm² = 40 cm²

C would be the answer this is the correct answer because it makes most sense and also that’s correct because

The area of the top is :1/2x8x6=24 cm
Next!!

The area of the bottom is:1/2x8x4=16cm
Next!!
24 cm +16 cm = 40cm
Next!!
Soo this is how I got my answer I hope u pass

Ellie is making a batch of pancakes
and her recipe calls for 1 1/2 cups of
flour and 1 1/4 cups of milk. If she only
has 1 cup of milk, how much flour
should she use to make the same
pancake recipe?

Answers

She would need 1/2 cups of flour

Use the Pythagorean theorem to find the unknown side of the right triangle.
Hypotenuse length = ____

thank u so much this is worth 15 points

Answers

Answer:

The answer is 41.

Hypotenuse length=41

Answer:

40×9÷2= 180

Hope this helps!!

Drug Name Half-life
-----------------------------------
Acetaminophen 1-4 hours
Ibuprofen 1.8-2 hours
Loratadine 8.4 hours
Lithium 8 hours
Diphenhydramine 5.3-11.7 hours

The table above displays the half-lives of 5 common house hold drugs. The half-life (h) is the time is takes for a substance to reduce to half its initial value (A0). Half life can be used to solve for the amount (A) of a substance left after t time by using the following equation:


A=A^0⋅(12)^t/h
If Scott was administered 300 mg of Lithium, which of the following represents how much lithium, rounded to the nearest hundredth of a mg, could be left in Scott's blood stream after 12 hours?

Select one:
A. 157.23
B. 106.07
C. 212.17
D. 188.99

Answers

Answer:

  B.  106.07

Step-by-step explanation:

To make use of the given formula for amount remaining, we need to know the original amount (300 mg), the elapsed time (12 h), and the half-life of the substance of interest (8 h).

Setup

Using the given formula with the relevant values, we have ...

  A = (300 mg)·(1/2)^(12/8)

Evaluation

Using a calculator to evaluate this expression, we find the amount of Lithium remaining in Scott's system after 12 hours to be ...

  A ≈ 106.07 mg

The time it takes a bricklayer to lay bricks varies directly with the number of bricks. The brick layer's data is shown in the table. If x = time, and y = the number of bricks, which equation models the bricklayer's direct variation?

Answers

Answer:

50

Step-by-step explanation:

2 = 100

100 ÷ 2 = 50

half of a hundred is 50

Answer:

50

Step-by-step explanation:

2 = 100

100 ÷ 2 = 50

answer=50

Figure AAA is a scale image of figure BBB.

Figure AAA maps to figure BBB with a scale factor of 0.250.250, point, 25.
What is the value of xxx?

Answers

Answer:

4

Step-by-step explanation:

Answer:

12

Step-by-step explanation:

explain to me how to find the volume of a shape like im a 5 yr old because thats the best way ill understand it.

Answers

Answer:

length x width x height

Step-by-step explanation:

I'm 43

Answer:

Length x height x width.

Step-by-step explanation:

Examples:

1 x 2 x 3 = 1 x 2 = 2 + 0 = 2 x 3 = 3 + 3 = 6 so the answer is 6.

2 x 3 x 2 = 2 x 3 = 3 + 3 = 6 x 2 = 6 + 6 = 12 so the answer is 12.

Here's one more in a different way:

3 x 5 x 4 = 5 + 5 + 5 = 15 = 15 + 15 = 30 x 2 = 30 + 30 = 60.

Please answer this correct

Answers

Answer:

C), or y = 200(1.18)^x, because we have 200 bacteria to start with and 1.18 because if you multiply something by 1.18 that is essentially 118% more than the number, or 18% more than the number.

Hope this helps!

The correct answer is C

Write an explicit formula for a_na
n, the nth term of the sequence 11,9,7,...

no need to explain

Answers

An=11+(n-1)*(-2)))))

0= - z/3 + 4
Can you help me?

Answers

Answer:

z=12

Step-by-step explanation:

subtract both sides by 4:

-z/3=-4

then multiply both sides by -3:

z=12

Answer:

Step-by-step explanation:

Jd

30 POINTS!!!

In this discussion, you have the opportunity to have some hands-on fun. With a
tape measure determine the diameter and circumference of at least three circular
objects. Calculate the ratio of the circumference to the diameter.
Take a look at Khianna's post:
I used a tape measure to determine the diameter and circumference of an orange
juice can, a trash can, and a lamp shade. Here is what I found:
Circumference
4.65 in
Ratio
3.1
OJ Can
Diameter
1.5 in
8 in
6 in
Trash Can
3.12
24.96 in
18.8 in
Lamp Shade
3.13
The ratio was close to Pi, but never actually equaled 3.14, maybe because of an
error when I measured the objects.
After you complete your measurements, use the diameter to calculate the exact
circumference of each object as shown on the next page.
Use the diameter to calculate the exact.value of the circumference of each object.
Look how Khianna added to her post:
If I used the diameter I measured, the exact value for each object's circumference would be: diameter or circumference OJ can 1.5 in 1.5 pi and 4.71 in trashcan eight in a pie in 25.12 in lampshade six and six pie and 18.84 in
Use a measuring tape to determine the diameter and approximate for conference of three household items
Find the ratio of the circumference to the diameter for each circle identify what the value of this ratio should be
Use pi and the diameter to calculate the exact value of the circumference
Use the approximation pi equals 3.14 to find the approximate circumference

Answers

Answer:

Diameter x Pi = Circumference

diameter and pxi the asneer si Jzjz

Help, I'm thinking it's a and c but I'm not sure

Answers

Answer:

Its B.

Step-by-step explanation:

(7-5)² = x²

2² = x²

x² = 2²

x = ±2

x = -2

x = 2

x1 = -2

x2 = 2

When he receives his first memory from the old man, what did Jonas experience for the first time?
A. the colors of the rainbow

B. the painful feeling of a sunburn

C. the feeling of snow and of riding a sled down a hill

D. the feeling of driving a car on an open road

Answers

Answer:

C. The feeling of snow and of riding a sled down a hill.

Step-by-step explanation

I read the book.

c. the feeling of snow and of riding a sled down a hill! hope this helps<33

Questions in a nutshell:

Let me repost this question 20 times and it will work

Teehee I will give brainiest to whoever answers correctly Teehee

What is 5 x 5 x 20 x 80 to the power of 10?

Answers

Answer:

1.048576e+46

Step-by-step explanation:

(5x5)x20x80 to the power of 10

(25x20)x80 to the power of 10

500x80  to the power of 10

40000 to the power of 10

the answer is 1.048576e+46

Answer:

1.048576E46

Step-by-step explanation:

brainliest please tryna rank up.

how much is a $450 snowboard with 7.25% sales tax

Answers

3.045
I did 450*7.25%=30.45
Moved the decimal
=3.045
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