David was thinking of a number. David doubles it, then adds 3 to get an answer of 81.6. What
was the original number?

Answers

Answer 1

Answer:

39.3

Step-by-step explanation:

81.6 - 3 = 78.6

78.6 ÷ 2 = 39.3


Related Questions

help!!!!!!!!!!!!!!!!!!!!!!! Its geometry

Answers

You’re correct, the answer is A :)
The answer is A you were already on it! :)

Will give brainliest

Answers

Answer: y=12 x =9

Step-by-step explanation:

In a parallelogram the diagonals bisect each other making them equal.

this means 2y + 6 = 30

we can rearrange this as 30 - 6 = 2y

24 = 2y  therefore y = 12

3x - 3 = 24

We can rearrange this as 24 + 3 = 3x

3x = 27

27 / 3 = 9

x = 9

Hope this helped :)

Find the peremiter of triangle ABC

Answers

Answer:

18

Step-by-step explanation:

if AB : BC : AC is 3 : 4 : 2 and BC = 8 then AB = 6 and AC = 4

To calculate the perimeter of the triangle we add all side lengths up

4 + 6 + 8 = 18

Answer:

Step-by-step explanation:

12

units.

Explanation:

Using the Distance Formula,

A

B

2

=

{

(

5

)

(

2

)

}

2

+

{

(

2

)

(

2

)

}

2

=

9

A

B

=

3

Similarly,

B

C

=

5

,

and

,

A

C

=

4

Hence,

the Perimeter=

A

B

+

B

C

+

A

C

=

12

units.

Answer link

PLEASE HELP ASAP IM TIMED
What steps are used to solve the equation?

g – 8 = 14



Complete the statements.

First,
both sides of the equation.
The solution of the equation is
.
Check the solution by substituting
for g and simplifying.

Answers

Answer:

both sides of the equation.

The solution of the equation is

.

Check the solution by substituting

for g and simplifying.

Step-by-step explanation:

What steps are used to solve the equation?

g – 8 = 14

Complete the statements.

First,

both sides of the equation.

The solution of the equation is

.

Check the solution by substituting

for g and simplifying.

Answer:

Step-by-step explanation:

What steps are used to solve the equation?

g – 8 = 14

 

Complete the statements.

First,  

✔ add 8 to

both sides of the equation.

The solution of the equation is  

✔ g = 22

.

Check the solution by substituting  

✔ 22

for g and simplifying.

3/5 converted to a decimal and percent. pls show work

Answers

Answer:

0.6

Step-by-step explanation:To find this answer, you must thinkk of the slash inbetween the numerator and the denominator. So divide the 3 bye the 5. Use a calculator if needed. 3/5=0.6 Hope this helped plz mark brainliest.

I need some help on this question! I will mark if you help!

Answers

There will be 320 degrees because 360-40=320

Will give brainliest!! Please help

Answers

Answer:

2.67m

Step-by-step explanation:

Find the scale factor= 5/3

times 1.6 by 5/3 = 2.67

Alan's wages are £240 each week.
He wants to save some money to buy a television.
The television costs £216
Alan is going to save 10% of his wages each week.
How many weeks will it take Alan to save enough money to buy the television?

Answers

Answer:

9

Step-by-step explanation:

10% of 240= 24

216/24= 9

Last week, Sia ran 11 miles each day for 5 days and then
took 2 days off. Did she run at least 6 miles last week?
plsss

Answers

Answer:

Step-by-step explanation:

Sia ran

11*5=55 miles

2 days off

55 miles/7days=7.85 miles/day average

yes, she did ran at least 6 miles per week

Sketch a cylinder with radius 8 feet and height 3 feet, then find the volume.

Answers

Answer: 339.29ft^3

Step-by-step explanation:

The formula for a cylinder is πr^2h

In your scenario, r=8 and h=3 so put those into the equation -

π8^2(3) and just solve!

help me pls the photo attached is the question quick pls ill give brainliest answer​

Answers

Answer:

12:18 and 20:30

Step-by-step explanation:

Answer:

12:18? n 20:30?

Step-by-step explanation:

sorry if im rong

Carlos has 38 apples. He puts 8 apples into each bag. If he fills as many bags as possible, How many apples are left
A .6
B. 5
C 2
D 4

Answers

Answer:

the answer is A 6 apples

Step-by-step explanation: you want to divide 38 by 8 if you do that you get 4 bags with 6 apples left

Answer: Carlos can fill 4 bags and have 6 left over

Step-by-step explanation:

The first step is to divide 38 by 8.

38 ÷ 8 = 4 with 6 left over.

That means that Carlos will be able to fill 4 bags and have 6 left over.

The answer is A, 6. Hope this helps, and good luck!

What would you multiply to make the y variable cross out?

-5x + y = -3

3x - 8y = 24

Answers

Answer:

Step-by-step explanation:

-40x + 8y = -24

 3x  -  8y = 24

-37x = 0

x = 0

0 + y = -3

y = -3

(0, -3)

Answer:

I will show you how to solve for x and y.

Step-by-step explanation:

-5x + y = -3

3x - 8y = 24

You can isolate y in the first equation, and substitute that into the second equation.

so to isolate y in -5x + y = -3, you would add 5x to both sides

this gives you y = 5x - 3

Then substitute this y into the equation below.

3x - 8(5x-3) = 24     (this way, the y variable disappears)

then distribute the 8 into the bracket

3x - 40x + 24 = 24

combine the variables

-37x + 24 = 24

isolate x by moving the constants to one side

-37x = 0

so x = 0

I am not sure if you want the rest, but here it is.

substitute x = 0 into one of the equations.

-5x + y = -3

-5(0) + y = -3

y = -3

The sum of 4 consecutive odd integers is 72
Help

Answers

Answer:

Answer: The 4 consecutive odd integers are 15, 17, 19, 21.

Answer:

15 + 17 + 19 + 21= 72

Step-by-step explanation:

hope this helped!

HELPPPP!!! TRUE OR FALSE

Answers

i think it may be true, please correct me if i am wrong
It’s true I think it was

I keep struggling on this question can someone help me figure it out

Answers

Answer:

the last one

Step-by-step explanation:

(:

What is 24a³ ÷ 8a ²​

Answers

Answer:

24/8=3. 3-2=1 but you don't have to put the 1

3a

The 3 and the 2 are subtracted.

1. If you wish to calculate the interest on an investment with an interest rate
of 2.85%, what number will you plug into your equation?"
0.00285
2.85
0.285
ОО
0.0285

Answers

Answer:  Choice D)  0.0285

=========================================

Explanation:

You move the decimal point two spots to the left to go from 2.85% to 0.0285

Or you can think of it like this:

2.85% = (2.85)/100 = 0.0285

since "percent" means "per 100"

Which of the following lists of Triangle side lengths would not be considered a Pythagorean Triple?

A. 5, 12, 13
B. 7, 24, 25
C. 9, 21, 23
D. 12, 35, 37​

Answers

Answer:

c

Step-by-step explanation:

Which of the following is NOT equivalent to 78 ÷ 6? (72 + 6) ÷ 6 (72 ÷ 6) + (6 ÷ 6) (60 ÷ 6) + (18 ÷ 6) (72 ÷ 6) + 6

Answers

Answer:

(72 divided by 6) + 6

Step-by-step explanation:

78 divided by 6 is 13. The question (72 divided by 6) + 6 does not equal to 13, it equals to 14, therefore (72 divided by 6) + 6 is not equivalent.

Answer:

(72 divided by 6) + 6

Step-by-step explanation:

Slope=2/5: passes through (-3,1)

Please help. I will give brainliest
What is the slope intercept form

Answers

Answer:

the required equation is y - 2/5x = 11/5

Which table corresponds to the equation y = −3x −2?

Answers

Answer:

b

Step-by-step explanation:

The interior angles formed by the sides of a quadrilateral have measures that sum to 360°

What is the value of x?


(Look at the photo)

Answers

Answer:

I believe x = 34

Step-by-step explanation:

3 × 34 = 102

102 - 6 = 96

2 × 34 = 68

96 + 68 + 88 + 108 = 360

What is the result when the number 11 is increased by 8.8%?

Answers

Answer:

11.968

Step-by-step explanation:

Y=x/4-7;y=2 find the value of x for the given value of y

Answers

Answer:

do you mean y=x-4-7 cause I can't understand that

HELP FAST TRUE OR FALSE

Answers

It’s false because I got a big brain

The total cost of a $70.42 meal after a 20% tip
$

Answers

Answer:

$84.50

Step-by-step explanation:

Answer:

$84.504

Step-by-step explanation:

20% of 70.42 is 14.08, 14.08 plus 70.42 is 84.504

LMNP is rotated 90° clockwise around the origin.



What are the coordinates of M'?

A. M’(3,-4)
B. M’(-3,-3)
C. M’(-4,3)
D. M’(4,-3)

Answers

Answer:

ITS IS D (4,-3)

Step-by-step explanation:

Ap ex

The coordinates of M is M’(4,-3).

What is rotation?

Rotation means the circular movement of an object around a center. It is possible to rotate different shapes by an angle around the center point.

Given:

LMNP is rotated 90° clockwise around the origin.

If we rotate the figure in LMNP  about 90 degrees then the coordinates will change into

(x, y)  to (y, -x).

As, x= 3, y=4

Hence, the coordinates of M is M’(4,-3).

Learn more about this concept here:

https://brainly.com/question/22851947

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Which question below is a Statistical Question?
A. How many students have a cell phone?
B. How many months are in a year?
C. How tall are the students in your class?
D. What is for lunch today?

Answers

Answer:

C

Step-by-step explanation:

I chose C because it more detailed than the rest of the question. Everyone already knows how many months are in a year. What is for lunch today is just a normal question. How many students have a cell phone was not really detailed but it would have been different if they said "How many percentage of college students in math class uses cell phones.  

Hope this helps:)



Graph f (.x) = x3 – 4x3 + x2 + 2. Identify the x-intercepts and the points where the local maximums and local
minimums occur. Determine the intervals for which the function is increasing or decreasing. Round to the nearest
hundredth, if necessary.

Answers

After graphing  x⁵ – 4x³ + x² + 2, we have

x-intercepts : x ≈ 2.16, x = 1, x ≈ 1.75

local maximums : (-1.63, 10.47)

local minimums : (1.46, -1.68)

increasing : 1.46 < x < -1.63

decreasing : -1.63 < x < 1.46

What is graphing?

In discrete mathematics, and mοre specifically in graph theοry, a graph is a structure amοunting tο a set οf οbjects in which sοme pairs οf the οbjects are in sοme sense "related". The οbjects cοrrespοnd tο mathematical abstractiοns called vertices (alsο called nοdes οr pοints) and each οf the related pairs οf vertices is called an edge (alsο called link οr line).

Typically, a graph is depicted in diagrammatic fοrm as a set οf dοts οr circles fοr the vertices, jοined by lines οr curves fοr the edges. Graphs are οne οf the οbjects οf study in discrete mathematics.

After graphing  x⁵ – 4x³ + x² + 2, we have

x-intercepts : x ≈ 2.16, x = 1, x ≈ 1.75

local maximums : (-1.63, 10.47)

local minimums : (1.46, -1.68)

increasing : 1.46 < x < -1.63

decreasing : -1.63 < x < 1.46

Learn more about graph

https://brainly.com/question/17267403

#SPJ1

Complete correct question:

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