Mathematics High School

Gavin was thinking of a number. Gavin adds 9 to it, then doubles it and gets an answer of 83.2. What was the original number?

Answers

Answer 1

Answer: it is 32.6

Step-by-step explanation:

Answer 2

The orginal number that Gavin was thinking of is 32.60.

What is the original number?

Let the orginal number be represented with y

Gavin adds 9 to the original number: 9 + y

The answer is doubled: 2(9 + y)

The answer is 83.2: 2(9+y) = 83.2

In order to determine the value of y, take the following steps:

Divide both sides of the equation by 2

9 + y = 41.60

Subtract 9 from both sides of the equation

y = 41.60 - 9

y = 32.60

To learn more about addition, please check: https://brainly.com/question/349488

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Related Questions

the equation y=9.5x+20 represents the amount of money sam earns in a day,y, when he work x hours .how many hours would sam have to work to earn $96?

Answers

Answer:

around 10-11 hours

Step-by-step explanation:

r + 4 > 8 ; r= 2 i need help asap

Answers

Answer:

Step-by-step explanation:

2 + 4 > 8

6 > 8

not true

-5x + 4 = 2x + 16
How do I solve this

Answers

Subtract 2x from both sides then you’d have -7x+4=16 Then you subtract 4 from both sides and you’d get -7x=12. Next you divide both side by -7 so x=1.75 rounded to the nearest hundredth.

Help my teacher hates me enough already.

Answers

Answer:

jh

Step-by-step explanation:

uirhgurhehgu5rhginiurogherughre hiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii

Answer: 6.72 x 10^-5. The number is an extremely small number that started out as 6.72. You would divide the number by 10, so many times to get this number. Since the number is small, the exponent is negative. The exponent tells how many times the decimal point will be moved to the left. If the number started as 6.72 and is now 0.0000672, that means that the decimal point moved 5 times to the left.

work out 6d + 8 = 14 + 3d

Answers

In 6d + 8 = 14 + 3d , D=2

Isolate the variable by dividing each side by factors that don't contain the variable.

PLEASE HELP I’LL GIVE BRAINLIEST!

Questions:
1. How do you solve for a specific variable?
2. Why would you want to solve for a specific variable?
3. Show an example of solving for a specific variable.

Answers

Here the first one, One goal in solving an equation is to have only variables on one side of the equal sign and numbers on the other side of the equal sign. The other goal is to have the number in front of the variable equal to one. The strategy for getting the variable by itself with a coefficient of 1 involves using opposite

what happens when you raise -2 to a power

Answers

Answer: it becomes a positive

Step-by-step explanation:

Along the U.S. Atlantic coast, the sea level is rising about 2 millimeters per year. Joe is 13 years old. How many millimeters has sea level risen since Joe was born?

Answers

26 mm

Because 2mm x 13 years = 26

Order the following from least to greatest: 14 -6, 0, 8, 3.4, -8, 2​

Answers

Answer:

-6. -8 0 3.4 6 8 14

Step-by-step explanation:

I think I am correct

Answer:

-6. -8 0 3.4 6 8 14

Hope I helped ya

4 times the sum of a number and 5 is 1 less than the same number

Answers

x = a number

4(x + 5) = x - 1

Now, let's distribute the 4

4x + 20 = x - 1

Subtract x and 20 from both sides.

3x = -21

Divide both sides by 3

x = -7

Sandy went to Pens R Us during their annual sale. There was a pack of 20 pens for $8.50. On another aisle, Sandy saw a pack of 6 pens for $4.50.Which is the better buy and why?. Find the rate and unit rate

Answers

Answer:

20, for 8.50

Step-by-step explanation:

6 + 6 = 12, which is 4.50 + 4.50, which would be about 10, so 20 for 8.50 would be better.

Carlos' cell phone company charges $50 per month for unlimited calls and internet use and $0.15 per text message. His last cell phone bill was $56.75. How many text messages did Carlos send last month?

Answers

Answer:

Step-by-step explanation:

.15x + 50 = 56.75

.15x = 6.75

x = 45 texts

45 texts I’m pretty sure. 56.75 minus the $50 charge is $6.75. So divide 6.75 by 0.15 and u get 45:)

3. The expanded form of a number is shown below.
(9x1)+(1x1/10)+(6x1/100)+(3x1/1000) What is the number written
in standard form?
A. 91.63
C. 9.106003
B. 9.163
D. 9.0163

Answers

I believe it’s c because the number written is a standard porabala which it’s standard

The area of a rectangle is 24,396 square centimeters. If the width is 38 centimeters, what is the length?

Answers

Answer:

642

Step-by-step explanation:

area equals LxW

divide 24396/38

answer 642

642x38= 24396

7 + 2x/3=5
what’s x?

Answers

Dhdidbfvuddjendjdifbdkdbfjdidnd it’s 8

what is this statement Segment AB is congruent to segment AB.

Answers

Answer:

reflective

Step-by-step explanation:

This statement shows the reflective property.

Please help me! I’m stuck - Mathematics

Answers

Answer:

17. 13

18. 3x + 12

19. 1/4

Step-by-step explanation:

17.

[tex]3a + b = 3(5) - 2 \\ = 13[/tex]

18.

[tex]3(x + 4) = 3x + 12[/tex]

19.

[tex]p \: = \frac{3}{3 + 4 + 5 } \\ = \frac{3}{12} \\ = \frac{1}{4} [/tex]

Answer:

Step-by-step explanation:

17. 3(5) + 2 = 15 + 2 = 17

18. 3(x + 4) = 3x + 12

19. 3/(3+4+5)= 3/12= 1/4

Geography textbook has a width of 9 inches and a diagonal of 15 inches. What is the length of the
textbook?

Answers

Answer:

12 inches

Step-by-step explanation:

The Pythagorean's theorem states that a triangle's hypotenuse's length is equal to a^2+b^2=c^2.

9 is a, b is the length, and c is the 15.

9^2+b^2=225

225-81=144

The square root of 144 is 12, therefore 12 inches is the length.

The table below shows the number of school absences each day.

A 2-column table with 6 rows. Column 1 is labeled Day (x) with entries 1, 2, 3, 5, 6, 7. Column 2 is labeled Absences (y) with entries 10, 6, 2, 10, 6, 2.

Which equation models the data in the table?

y = 4 cosine (StartFraction pi Over 2 EndFraction x minus StartFraction pi Over 2 EndFraction) + 6
y = 4 cosine (StartFraction pi Over 2 EndFraction x + StartFraction pi Over 2 EndFraction) + 6
y = 2 cosine (StartFraction pi Over 2 EndFraction x minus StartFraction pi Over 2 EndFraction) + 6
y = 4 cosine (StartFraction pi Over 2 EndFraction x + StartFraction pi Over 2 EndFraction) + 6

Answers

Answer:

A

Step-by-step explanation:

did it on edge soo there ya go

Answer:

a

Step-by-step explanation:

2 is multipled by the difference of a number and 4 equation

Answers

Answer:

This is confusing.. so all ill say involving 2 and 4.

2 x 4 = 8

2 + 4 = 6

2 - 4 = 2

2 dived by 4 = 2

Decimal form:

2.4 or 4.2

Fraction form:

2/4 or 4/2

find the values of x and y.
​

Answers

Step-by-step explanation:

Hey there!!!

When you closely see in figure, we find that,

90° and (2y + 5)° are supplementary,

So, 90° + 2y +5°=180° { supplementary angle is always 180°}.

or, 2y = 180°-95°

[tex]y = \frac{85}{2} [/tex]

Therefore the measure of angle y is 42.5°.

Again, (5x-17)° + (3x - 11)° = 180° (They are linear pair).

8x - 28° = 180°

8x = 180°+28°

[tex]x = \frac{280}{8} [/tex]

Therefore the measure of angle x is 26°.

Hope it helps...

simplify the following expressions ( use distributed property )

Answers

-9+3x

2(9-3x)/-2

-(9-3x)

-9+3x

Brainliest?

Matthew drove 74 miles in 2 hours. On average,how fast did he drive in hours per mile?

Answers

Answer:

37 mph

Step-by-step explanation:

Step 1:

74 ÷ 2

Answer:

37

Hope This Helps :)

Last week, Tina worked 40 hours in 4 days. She worked the same number of hours each day. How many hours did she work each day? Which equation below matches this situation.

Answers

She works 10 hour per day

which of the following are based on the diagram below? (select all answers that are true)

please help me out here!

Answers

It’s the first one.

Kermit's favorite iced tea is made with 15 tea bags in every 2 liters of water. Peggy made a 12-liter batch of iced tea with 90 tea bags. What will Kermit think of Peggy's iced tea? Choose 1 answer: A It is too strong. B It is too weak. C It is just right.

Answers

Answer:

  C.  It is just right.

Step-by-step explanation:

We want to compare the ratios ...

  bags : liters = 15 : 2

and

  bags : liters = 90 : 12

If we multiply the numbers of the first ratio by 6, we see they are identical to those in the second ratio:

  (15)(6) : (2)(6) = 90 : 12

The ratio of bags to liters for Peggy's tea matches the ratio Kermit likes. He will think it is just right.

Answer:

C its just right

Step-by-step explanation:

Answer 2 question plz ASAP

Answers

Answer:

True on both.

Step-by-step explanation:

The center of dilation is a fixed point in the plane. If the scale factor is greater than 1, the image is an enlargement (a stretch). If the scale factor is between 0 and 1, the image is a reduction (a shrink).

What’s 6 (3x + 5) please

Answers

6(3x+5)

6*3x=18x

6*5=30

18x+30 is your answer! I hope this helped! :)

In need of assistanceeeee!

Answers

Answer:

300 mi

Step-by-step explanation:

set the equations equal to each other.

110+(.60x)=20+(.90x)

solve

90=0.30x

x=300

check

"substitute x"

both = $290

Answer:

300 mi

Step-by-step explanation:

what's 32.88 divided by 0.6​

Answers

It’s 54.8 I’m pretty sure
(I hope this helps!)

Answer:

54.8 is the correct answer

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