If n is a two-digit number, what is the sum of the digits of 99×n?

Answers

Answer 1

Answer: The sum of the digits of 99 × n is 27 - 10 = 17.

Step-by-step explanation:

To find the sum of the digits of 99 × n, we can use the fact that 99 × n = 100 × n - n. The sum of the digits of 100 × n is simply n, since the hundreds digit is zero. Therefore, the sum of the digits of 99 × n is equal to the sum of the digits of n - n, which is simply zero.

For example, if n = 37, then 99 × n = 99 × 37 = 3,699. The sum of the digits of 3,699 is 3 + 6 + 9 + 9 = 27. The sum of the digits of 37 is 3 + 7 = 10. Therefore, the sum of the digits of 99 × n is 27 - 10 = 17.


Related Questions

Dan drank 7/8 of a bottle of water During basketball practice. He then drank Another 4/8 of a bottle after practice. How much water did he drink altogether that’s

Answers

Answer:

In total Dan dranked 11/8 of his bottle or as a mixed number 1 and 3/8 of his bottle.

Step-by-step explanation:

Jenny calculated the probabilities of pulling chops of different colors out of a bag.
Which color chip is MOST LIKELY to be pulled from the bag?

DON’T ANSWER IF YOU DO NOT KNOW THE ANSWER! Whoever answers correctly will get Brainliest! :)

Answers

Answer:

I'm really sorry if i am wrong but i think Gold chip is most likely to be pulled from the bag.

Step-by-step explanation:

Let's convert each fraction given to the decimal form:

(Purple) [tex]\frac{1}{5}[/tex] = 0.2

(Gold) [tex]\frac{6}{10}[/tex] = 0.6

(White) [tex]\frac{1}{10}[/tex] = 0.1

(Red) [tex]\frac{2}{20}[/tex] = 0.2

=> since Gold chips' value is the most, the answer would be Gold Chip.

Hope this helps!

I’ll mark brainlist
No links

Answers

The answers are 9/24 28/24

Answer:

3/8 = 9/24

7/6 = 28/24

Step-by-step explanation:

A cone has a radius of 7cm and a height of 12 cm. Find the volume

Answers

9514 1404 393

Answer:

   196π cm^3 ≈ 615.8 cm^3

Step-by-step explanation:

Put the numbers in the volume formula and do the arithmetic.

  V = 1/3πr^2·h

  V = 1/3π(7 cm)^2(12 cm) = 196π cm^3 ≈ 615.8 cm^3

if lx-2l=9 which of the following equal lx+3l?
A)4
B)7
C)8
D)10
E)11​

Answers

Answer:

D.10

Step-by-step explanation:

its check promise

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In a storeroom,there are 30 blue balls,48 green balls,some red balls and some white balls. there are 3 times as many green balls as red balls and 5 times as many blue balls as white balls.
(a) How many balls are there altogether?
(b) How many balls are left in the room if 7/10 (fraction) of the balls are taken away?
pls help me answer both

Answers

Answer:

7/30

Step-by-step explanation:

We first have 7 blue and 3 red out of 10, so P(1st ball is red) = 3/10

Now, we have pulled a red ball out of the bag, leaving us with 7 blue and 2 red out of 9 total balls.Then P(2nd ball is blue) = 7/9.  Put this together, P(1st red AND 2nd blue) = 3/10⋅7/9 =7/30

Which ordered pair is a solution to - 8x + 6y <3x - 30?
A (-6, -16)
B (6, -6)
© (69)
D (2, 3)

Answers

Answer:

B ( 6,-6) ..

I think I'm correct

The answer would have to be B I think

lil help here please

Answers

The answer is the last one (-20)

Use the drop-down boxes to show a function in the form y = mx + b for the line that contains the points (–6.4, –2.6) and (5.2, 9).

Answers

The equation in the slope-intercept form is y = x + 3.8

What is a slope?

In mathematics, a line's slope, also known as its gradient, is a numerical representation of the line's steepness and direction.

Given:

A line that contains the points (–6.4, –2.6) and (5.2, 9).

If a line passes through two points (x₁ ,y₁) and (x₂, y₂) ,

then the equation of line is

y - y₁ = (y₂- y₁) / (x₂ - x₁) x (x - x₁)

So, the equation,

y + 2.6 = {(9 + 2.6)/(5.2 + 6.4)} (x + 6.4)

y + 2.6 = x + 6.4

y = x + 6.4 - 2.6

y = x + 3.8

Therefore, the equation y = x + 3.8 is in the slope-intercept form.

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The product of -12 and a number is the same as the sum of the number and 26

Answers

-2

Step-by-step explanation:

12x=x+26

-13x=26

x=-2

Cassandra baked a cake measuring 13 in. x 9 in. x 2 in. She wants to add frosting to the cake. The only side that will not be frosted is the bottom of the cake.
What is the surface area that will be frosted with icing?

O A 24 in. ^2

O B 117 in. ^2

O C 205 in. ^2

O D 322 in. ^2

DO NOT ANSWER IF YOU DO NOT KNOW THE ANSWER! Whoever answers correctly will get Brainliest! :)

Answers

Answer:

C

Step-by-step explanation:

The cake has a shape of a rectangle prism

first of all we can find the base area, that represents the top of the cake

base area = base x width = 13 x 9 = 117 in^2

Now we have to find the lateral area

base perimeter = (base + width) x 2 = (13 + 9) x 2= 44 in

LA = base perimeter x height = 44 x 2 = 88 in^2

total icing surface:

base area + LA = 117 + 88 = 205 in^2

I need help with this answer all of them correctly please.

Answers

Answer:

1 / 9

Step-by-step explanation:

Total number of letters = 9 ; This is the total possible outcomes

Number of letter D = 1 ; this is the required outcome

Recall:

Probability = required outcome / Total possible outcomes

P( choosing D) = 1 / 9

wanza sold a bag of potatoes for sh.420 and made a profit.if she sold it at sh.320 ,she could have made a loss .Given that the profit is thrice the loss ,how much did she pay for the bag of potatoes​

Answers

Answer:

sh.345

Step-by-step explanation:

The difference between the price selling with profit and price selling at a loss is 420-320 = 100

Profit is thrice the loss says we can take the difference in prices and divide it into 4 parts, x and 3x, representing the loss and thrice the loss, or profit margin.

x + 3x = 100

4x = 100

x = 25

loss would be 25,

profit would be 75

--------------------

sold at a profit: 420 -75 = sh.345

----------------

Does this exercise seem similar to what you're doing in class?

The four approved methods of document destruction are

Answers

Answer:

1area

2 water

3 food

4 house

Answer:

shredding, incineration, pulping, and pulverization.

Step-by-step explanation:

Shredding: This involves cutting paper into small pieces using a shredding machine. The shreds are usually too small to be reconstructed, making it an effective method for destroying sensitive documents.

Incineration: This involves burning paper to ash using high heat. Incineration is a fast and efficient way to destroy large volumes of documents, but it is not always practical or environmentally friendly.

Pulping: This involves breaking down paper using water and chemicals to create a slurry that can be recycled or disposed of. This method is effective for destroying large volumes of paper, but it is not suitable for destroying documents with sensitive information.

Pulverization: This involves grinding paper into a fine powder using a pulverization machine. The powder is then disposed of or recycled. This method is effective for destroying documents with sensitive information, but it is not practical for destroying large volumes of paper.

Marshall has $4000 in his bank account. It yields 8% simple interest annually. How much money in interest will the account have gained in 5 years?
PLSSS HELP QUICKLY

Answers

Answer:

$1600

Step-by-step explanation:

Interest = Principal x Rate x Time

I = 4000 x .08 x 5

I = 1600


F

a
If
F
=
48
when
a
=
4
find,
a
when
F
=
60

Answers

Answer:

a=5

Step-by-step explanation:

An Example of a caravan is
A. eight covered wagons travelings together on the trail
B. one covered wagon traveling by itself
C. a covered wagon passing a horse
D. a covered wagon traveling at top speed

Answers

An Example of a caravan is eight covered wagons traveling together on the trail. Meaning, option A is correct.

What is caravan?

A caravan, travel trailer, camper, tourer, or camper trailer is a trailer towed behind a road vehicle to provide a more comfortable and secure sleeping space than a tent.

It allows people to have their own home on a trip or vacation without relying on a motel or hotel, and it allows them to stay in places where none are available. However, in some countries, campers are restricted to designated sites where fees must be paid.

Caravans range from basic models that are little more than a tent on wheels to those that have several rooms with all of the furniture, furnishings, and equipment of a home. The solid-wall trailers can be made of metal or fibreglass.

Learn more about caravan

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(5x+3y) - (2x-7y) +8x

Answers

Answer:

11x + 10y

Step-by-step explanation:

Are the two expressions equivalent when x = 5? 24x + 18 and 6 (4x + 2)

Answers

Answer:

Nope-

Step-by-step explanation:

24x + 18 = 138

6 (4x + 2) = 132

أحتاج إلى مساعدة كيف تقدم كوزي Tell me what this say for free branleist no transition script

Answers

Answer:

you need help to progress cozy im guessing?

Step-by-step explanation:

Answer: Hope This Helps! :D

Step-by-step explanation:

I need help how to progress cozy

Plz help I will give brainiest

Answers

Answer:The value of the z-score tells you how many standard deviations you are away from the mean. ... A positive z-score indicates the raw score is higher than the mean average. For example, if a z-score is equal to +1, it is 1 standard deviation above the mean. A negative z-score reveals the raw score is below the mean average.

Step-by-step explanation:

A 36-foot flagpole casts a 10 3/4-foot shadow, while the hospital nearby casts 37 5/8-foot shadow. Find the height of the hospital

Answers

Answer:

meh dont know how to do this tbh

Step-by-step explanation:

Answer:

AHHHHHHHHH

Step-by-step explanation:

Any help would be awesome

Answers

Answer: 72 square units

Step-by-step explanation: It is 72 square units because if you count the sides p and q you get 9 and the same with sides q and r you get 8 and if you multiply them together you get 72.

Exercises gives the positions s = f(t) of a body moving on a coordinate line, with s in meters and t in seconds.
a. Find the body’s displacement and average velocity for the given time interval.
b. Find the body’s speed and acceleration at the endpoints of the interval.
c. When, if ever, during the interval does the body change direction?
s = t^2 - 3t + 2, 0 <= t <= 2

Answers

Hi there!

a. Find the displacement by plugging in the values of the interval:

f(2) - f(0) = 0 - 2 = -2 meters.

Average velocity is the slope, thus:

[tex]v_{avg} = \frac{f(2) - f(0)}{2 - 0} = \frac{0 - 2}{2 - 0} = -1[/tex]

The average velocity for the interval is -1 m/s.

b. To find the speed at the endpoints, we must take the derivative to get the velocity equation:

f(t) = t² - 3t +2

f'(t) = 2t - 3, at t = 0, speed = |-3| = 3 m/s. At t = 2, speed = 2(2) - 3 = 1 m/s.

Acceleration is the second derivative, thus:

f''(t) = 2. The acceleration is 2 m/s² for both endpoints.

c. When the body changes direction, the first derivative changes signs. Thus:

0 = 2t - 3

3 = 2t, t = 1.5 sec. This is where the body changes direction.

please help I don't get it NO LINKS or I'll report pls don't answer the question if u don't know​

Answers

Answer:

1 person got 68 inches

4 persons got 69 inches

2 persons got 70 inches

3 persons got 74 inches

1 person got 76 inches

Which absolute value function, when graphed, will be
wider than the graph of the parent function, f(x) = |x|?


Answers

On solving the question, we can say that y using the given information we can prove that similar angle m ∠ABC = m ∠EDC.

What are similar angles?

Polygons' corresponding sides and corresponding angles are compared as part of the geometric tests for congruence and similarity. With care taken to maintain the order of adjacency, each side and each angle in one polygon is paired with a side or angle in the other polygon in these tests.

Given:

m ∠1 = m ∠2

m ∠2 = m ∠4

We have to prove that m ∠ABC = m ∠EDC

∠EDC = ∠3 + ∠4

m ∠ABC = m ∠1 + m ∠2

m ∠EDC = m ∠3 + m ∠4

m ∠1 + m ∠2 = m ∠3 + m ∠4      

m ∠ABC = m ∠EDC

Hence, by using the given information we can prove that  

m ∠ABC = m ∠EDC.

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which of the following describes the data set 6,8,13,15,21,23,31 pls help​

Answers

Answer:

B

Step-by-step explanation:

you can use the process of elimination. For all of the answers the minimum and the maximum are incorrect except for option B.

Special right triangles.
Find u.
Please help due in 30 min!

Answers

Answer:

2 km

Step-by-step explanation:

Reference angle = 45°

Opposite = u

Hypotenuse = 2√2 km

To find u, apply SOH:

Sin 45° = Opp/Hyp

Sin 45° = u/2√2

√2/2 = u/2√2 (sin 45 = √2/2)

Cross multiply

2*u = √2*2√2

2u = 4

Divide both sides by 2

u = 4/2

u = 2 km

Help me out with this please!

No links to suspicious sites other than Brainly!

Answers

Answer: E and F.

E:

4 * 4 * 4 = 64, and 64 = 64.

F:

-1 * -1 * -1 = 1, and 1 = 1

Brandon is building a desk that is 42 inches long. A piece of wood that he bought is 4 feet long. How much does Brandon have to cut off that piece of wood to make it the same length as his desk?

A. 2 inches B. 6 inches C. 12 inches D. 2 feet

Answers

Answer:

6 inches

Step-by-step explanation:

there are 12 inches in a foot

4 ft * 12 = 48 inches

48 - 42 = 6

Cut off 6 inches

The desk is 42 inches so we do 4*12=48 48-42=6 your answer is 6 inches
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