Mathematics College

Adam thinks of a number.
He multiplies it by 8, adds 6 and then divides it by 2.
He ends up with 131.
What was the number he started with?

Answers

Answer 1
He started with the number 32. You just have the do the opposite of the steps using the end result, 131 (131 MULTIPLIED by 2, instead of divided). Hope this helps.
Answer 2

The number Adam started with is 32.He ends up with 131.

Let's denote the number Adam started with as "x." After multiplying by 8, we have 8x.

He adds 6 to the result.

The expression becomes 8x + 6.

He divides the result by 2.

The expression becomes (8x + 6) / 2.

The final result is 131.

Setting up the equation:

(8x + 6) / 2 = 131

To find x, we can solve this equation.

Multiplying both sides by 2:

8x + 6 = 262

Subtracting 6 from both sides:

8x = 256

Dividing both sides by 8:

x = 32

Therefore, the number Adam started with is 32.

To know more about number click here:

https://brainly.com/question/17480172

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Related Questions

Find the value of x.
6
14
3x-12
21
x = [?]
Enter

Answers

Answer:

x = 7

Step-by-step explanation:

Based on the angle bisector theorem, we would have the following equation:

21/(3x - 12) = 14/6

21/(3x - 12) = 7/3

Cross multiply

(3x - 12)*7 = 3*21

21x - 84 = 63

21x - 84 + 84 = 63 + 84

21x = 147

21x/21 = 147/21

x = 7

Scores on the GRE​ (Graduate Record​ Examination) are normally distributed with a mean of 573 and a standard deviation of 84. Use the 68-95-99.7 Rule to find the percentage of people taking the test who score between 489 and 573

The percentage of people taking the test who score between 489 and 573 is

Answers

Answer:

The percentage of people taking the test who score between 489 and 573 is 34%.

Step-by-step explanation:

The Empirical Rule states that, for a normally distributed random variable:

Approximately 68% of the measures are within 1 standard deviation of the mean.

Approximately 95% of the measures are within 2 standard deviations of the mean.

Approximately 99.7% of the measures are within 3 standard deviations of the mean.

In this problem, we have that:

Mean of 573, standard deviation of 84

Percentage of people taking the test who score between 489 and 573

The mean is 573.

489 = 573 - 84, which means that 489 is one standard deviation below the mean.

The normal distribution is symmetric, which means that 50% of the measures are below the mean and 50% are below the mean.

So between one standard deviation below the mean and the mean, the percentage is 68/2 = 34%

The percentage of people taking the test who score between 489 and 573 is 34%.

18-2g=4g
Simplify !!!

Answers

Answer is 3✌✌✌✌✌✌I think

c) 25 + (-10) – 3 x [2 – (-2)]​

Answers

Answer:

3

Step-by-step explanation:

25 - 10 -3 × [2-(-2)]

25 - 10 -3 × (2+2)

25 - 10 -3 × 4

25 - 10 - 12

3

Answer:

i don't really know if it's correct 25-10-6x-2x

15-8x

plss heeelppppppppppppppp

Answers

Answer: I believe its all of them...

Step-by-step explanation:

Answer:

that is a trapezoid.if it were a rectangle it would have four sides but not equal if it was a square it would have four sides but equal.a parallelogram it would be seen somehow slopy and a rhombus too.so that is a trapezoid.

Needs help with this question ASAP

Answers

ASAP means as soon as possible. A is the answer, go with ur gut

Shelly bought a dozen pens for $144.
(a) Find the cost of 15 such pens.
(b) How many pens can be bought
for $84?​

Answers

Answer:

A. 180

b. 7

Step-by-step explanation:

Answer:

a. $180

b. $7

Step-by-step explanation:

In order to easily find the cost of x amount of pens, first find the unit price:

The unit price is the price for 1 of somethingTo find how much 1 pen is, divide 144 ÷ 12 (1 dozen = 12)144 ÷ 12 = 121 pen = $12

Part A - Find the cost of 15 pens:

Since we've just found the price of 1 pen, multiply the price by 1512 × 15 = $18015 pens cost $180 (outrageous!)

Part B - How many pens can be bought for $84?:

Since we know the cost of 1 pen is $12, we can work backwards on this stepTo find the amount of pens that can be bought with $84, divide 84 ÷ 1284 ÷ 12 = 77 pens can be bought

I need work to be shown

Answers

Step-by-step explanation:

I am sure you are 100 percent Clear.

Thanks.

It’s A :)
Have a nice day :)

what is the Estimate of 3583.37

Answers

Answer: 3583.37 ≈ 3500

Step-by-step explanation:

If A =
( 8 10 -6)
(-8 -10 7)
( 2 -2 -2)
and B =
( 5 1 9)
(-9 -8 10)
(-10 6 -2),
find -7A + 3B

Answers

9514 1404 393

Answer:

  see below

Step-by-step explanation:

Carry out the math element by element. For example, ...

  c11 = -7a11 +3b11

  c11 = -7(8) +3(5) = -41

_____

Additional comment

Matrix operations like this one are easily handled by all spreadsheets and most graphing calculators. Some scientific calculators support matrix operations as well.

plz help i need to know 94=10a-7 and 7k+10=31

Answers

Answer:

a=10.1

k=3

Step-by-step explanation:

Lets solve the first equation first.

94=10a-7

Lets add 7 to both sides.

101=10a

Divide both sides by 10 to isolate a

101/10=a

a=10.1

Lets do the second equation.

7k+10=31

Subtract 10 from both sides

7k=21

Divide 7 by both sides to isolate k

k=3

Choose the ratio in simplest form. 8:2

Answers

Answer:

4:1

Step-by-step explanation:

Which quantity is unknown

Answers

Answer:

The price of each book without sales tax

Step-by-step explanation:

Multiplying Integers

-5(-2)=

Answers

Answer:

10

Step-by-step explanation:

Hope this helps

Answer:

10

Step-by-step explanation:

-5(-2)

negative times negative in multipling and divding the answer is always a positive

6.
Ethan's middle finger is 10.6cm long. His ring finger is
9mm shorter. How long is his ring finger in centimetres?

Answers

Answer:

9.7 m

Step-by-step explanation:

Your answer is 9.7cm

Wouldn’t that be 9.7?

HELPPPLPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP

Answers

C May be the answer sorry if it is wrong.

It is C. 42 oz

--------

125 a la octava potencia?
please lo necesito ​

Answers

no se si esté correcto, buena suerte!:)

How do I ask questions?
2+2=?

Answers

Answer:

u just asked 2 questions so..... you typed them? i really dont understand ur question but 2 + 2 =

Step-by-step explanation:

loll

Answer: you just did

Step-by-step explanation:

you just sked a question

2+2=fish

2+2=4

What is the circumference of a circle with a diameter of 8 feet? Use 3.14 for ON d=80 O A. 25.12 ft B. 12.56 ft C. 50.24 ft D. 11.14 ft​

Answers

Answer:

25.12

Step-by-step explanation:

Formula: 2πr, r = d/2

Given: π = 3.14, d = 8

Sub: r = 8/2

Simplify: r = 4

Sub: 2(3.14)(4)

Simplify: 6.28(4)

Solve: 25.12

what is the total area of the shape below

Answers

Answer:

480 ft

Step-by-step explanation:

answer:

480ft²

explanation:

first of all, find the area of the rectangle as it is the easiest.
So, do A = L x W.

A = 24 x 15
= 360ft²

Then find the area of half of the triangle.
So, do A = 1/2 x b x h

The length of the base of the full triangle (aka top of the rectangle) is 24ft so since we are finding the area of half of the triangle all you have to do it half 24 (12). (also 1/2 is the same as 0.5)

So the equation for that would be
A = 1/2 x b x h
= 1/2 x 12 x 10
= 1/2 x 120
= 60

So now, to find the area of the whole triangle, times 60 by 2 (as both of the halves are the same) which gives you 120.

Finally, to find the area of the WHOLE shape, do 360ft² + 120ft² which gives you 480ft².


Hope this helps :)

What is the measured of bacteria at t=0?​

Answers

Answer:

Number of bacteria when t = 0 is 2,000

Step-by-step explanation:

Given:

Number of bacteria in a culture by equation

Q(t) = 2(729^t)

Value of t = 0

where t is number of hours

Find:

Number of bacteria when t = 0

Computation:

Given equation

Q(t) = 2(729^t)

Put t = 0

Q(0) = 2(729⁰)

We know that;

a⁰ = 1

So,

Q(0) = 2(729⁰)

Q(0) = 2(1)

Q(0) = 2

Number of bacteria when t = 0 is 2,000

find the least whole number which must be added to 207 to make it divisible by 17 please no links brainliest​

Answers

Answer:

14

Step-by-step explanation:

I am preatty sure its 14 hope this helps

What is the value of x ?

Answers

Answer:

x= - square root 141 or x= square root 141

well you have to do the hypotenuse number in ur calculator then find the length

find the length please help

Answers

116 I hope that helps

What's the mean of data set 15, 17, 23, 19,

Answers

Step-by-step explanation:

15 + 17 + 23 + 19

32 + 42 = 74

74/4 = 18.5 is the mean

Answer:

Mean= 18.5

Step-by-step explanation:

How to Find the Mean

Add up all data values to get the sum

Count the number of values in your data set

Divide the sum by the count

The mean is the same as the average value in a data set.

Mean Formula

The mean x of a data set is the sum of all the data divided by the count n.

Ben is taking a typing class, and the following line graph represents the number of words per minute he was able to type each week. According to the graph, how many more words per mioute could Ben type in week four than in week 2?

A. 20

B. 15

C. 10

D. 5​

Answers

B-15
I hope this helps you !!!!!

need help ASAP

DONT PUT LINK! I will REPORT YOU

Answers

the answer that you're looking for is 5.5 or 5 1/2, it's the same thing.

Seas and Colleen are raking leaves in their yard. Working together they can clear the yard of leaves in 24 minutes. What kind of long it would take Sean 20 minutes longer to clear the yard dinner with Colleen working alone

Answers

Answer:

Colleen alone to clear the yard of leaves in 40 minutes

Step-by-step explanation:

P.S - The exact question is -

Given - Seas and Colleen are raking leaves in their yard. Working together they can clear the yard of leaves in 24 minutes. What kind of long it would take Sean 20 minutes longer to clear the yard dinner with Colleen working alone

To find - When c is the number of minutes it would take Colleen to finish the job when working alone, the situation is modeled by this rational equation: How long would it take Colleen alone to clear the yard of leaves?

Proof -

Given that the equation is -

[tex]\frac{1}{c} + \frac{1}{c+20} = \frac{1}{24} \\\frac{c + 20 + c}{c(c+20)} = \frac{1}{24}\\\frac{2c + 20}{c^{2} +20c} = \frac{1}{24}\\24(2c + 20) = c^{2} +20c\\48c + 480 = c^{2} +20c\\28c + 480 = c^{2}\\c^{2} - 28c - 480 = 0\\c^{2} - 40c + 12c - 480 = 0\\c(c - 40) + 12(c - 40) = 0\\(c+12)(c-40) = 0\\c = -12, 40[/tex]

As time can not be negative

So,

we get

c = 40 minutes

∴ we get

Colleen alone to clear the yard of leaves in 40 minutes

1/4 / (17 + 4)
What’s 1/4 divided by (17+4)

Answers

Answer:

0.0119047619

Step-by-step explanation:

Answer:

21/4

Step-by-step explanation:

1/4 ÷ (17 + 4)

1/4 ÷ (21)

21 × 1/4 = 21/4

-TheUnknownScientist

a net shows faces and helps you find surface area

Answers

Answer:

Correct

Step-by-step explanation:

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