Mathematics Middle School

What is the smallest whole number that is equal to seven times the sum of its digits?

Good Luck!!! First Right Asnwer gets brainliest!!!

Answers

Answer 1

Answer:

21

Step-by-step explanation:

Answer 2
21.

Explanation:

The two-digit number ab stands for 10a + b since the first digit represents 10s and the second represents units. If 10a + b = 7(a + b), then 10a + b = 7a + 7b, and so 3a = 6b, or, more simply, a = 2b. That is, the second digit must be twice the first. The smallest such number is 21.

Related Questions

Given the following equations, at which point will the graphs intersect?
f(x) = 5.2 +1
9(x) = - 2x + 15
(1, 15)
(-2,-9)
(2.11)
(0,0)

Answers

Answer:

B

Step-by-step explanation:

Consider the division expression 7 1/2 ÷ 2. Select two multiplication equations that correspond to this division expression.

A: 2 x ? = 7 1/2
B: 7 1/2 x ? = 2
C: 2 x 7 1/2 = ?
D: ? x 7 1/2 = 2
E: ? x 2 = 7 1/2

Answers

3 3/4
If I’m not mistaking it’s answer for: A E
I know it is A but I am not sure about the other one sorry

Match each Situation to one of the equations
A:
A whale was diving at 2 meters per second. How long will it take for the whale to get from the surface of the ocean to an elevation of -12 meters.
B: A swimmer dove below the surface of the ocean. After 2 minutes, she was 12 meters below the surface. At what rate was she diving?
I'm not asking for the answer I'm asking for the equation.

Answers

Answer:

A: y = -2x

B: rate(meters/time)= 12 meters(distance) ÷ 2 minutes(time)

Step-by-step explanation:

Plz help brainliest plus 15 points each person who answers all four

Answers

Answer:

1. plot a point at (2,-3), then draw a line going through the point and -4

2. plot a point at (1,5), then draw a line going through the point and 8.

3. y = 3x + 2

4. y = -1x + 4

Skylar made 20% of her free throws over the season. If she shot 240 free throws, how many did she make?
Divide/scale down to solve for the missing percent.

Answers

Answer:

Skylar made 48 free throws.

haha, look at this! I got them all after I answered questions correctly.

Answers

Answer:

nice job can i get brainly xd

Step-by-step explanation:

A bookstore manager marks down the price of older hardcover books, which originally sell for b dollars, by 36%.

What is the sale price of a hardcover book for which the original retail price was $36.00?

The sale price is $____

THE EQUATION IS b-0.36b

Answers

Answer:

$31.02

Step-by-step explanation:

Find the amount of the discount:

47 x 0.34 = 15.98

Subtract the discount from the original price:

47 - 15.98 = 31.02

During a field trip, 60 students are put into equal-sized groups. Use 60 ÷ 5 = 12 to answer this question. If 5 represents the number of groups, what does 12 represent?

Answers

Answer:

12 is the number of people in each group.

Step-by-step explanation:

12 would be the number of people in each group. because as you divide 60 to 5..... 12 people are divided sperately into 5 groups.. hope this helps and if you have any questions go ahead and ask! JESUS LOVES YOU

Which directions am I translating if I am moving my figure 9 units horizontally and -4 units vertically?
A: 9 left and 4 up
B: 9 right and 4 up
C: 9 left and 4 down
D: 9 right and 4 down

Answers

Answer:

You can remember horizontal be horizon which is left to right

And verticals by your vertebrae which is up and down

The first number is the x axis (side to side) and the second is the y axis (up and down)

9 right and 4 down

The answer is a I think because this is a little confusing for me because I’m not in this grade

Worksheett questionn

Answers

the correct answer is 243.984

Answer:

243.984

Step-by-step explanation:

First, you multiply 53x4.

Then you multiply .04x.6.

Then you add both products together and you get 243.984.

Solve the problems:
2 1/2 + x = 5 1/3
2 4/15 - z = 1 2/3
y - 6 7/8 = 2 1/16

Answers

Answer:

1- 39/6

2-36/15

3-155/16

Step-by-step explanation:

have a nice day.

Answer:

2 1/2 + x = 5 1/3

x = 5 1/3 - 2 1/2

x = 16/3 - 5/2

x = 32/6 - 15/6

x = 17/6

x = 2 5/6

2 4/15 - z = 1 2/3

-x = 1 2/3 - 2 4/15

-x = 5/3 - 34/15

-x = 25/15 - 34/15

-x = - 9/15

-x = -3/5

x = 3/5

y - 6 7/8 = 2 1/16

y = 2 1/16 + 6 7/8

y = 33/16 + 55/8

y = 33/16 + 110/16

y = 143/16

y = 8 15/16

What is the missing value in the equation shown?
___ x 1/10 = 0.46
A 0.046
B 0.46
C 4.6
D 46

Answers

Such fried beautiful

Please Help with this

Answers

Answer: 20

Step-by-step explanation:

look the graph 6 is june and 4 is march so between is dot by 20 so 20 is answer

it would be 15
march is the third month or in this case in between 2 and 4 on the graph at 10 inches.
june is the sixth month and the sixth dot is at 25 inches. the difference between 25 and 10 is 15.

HELP PLEASE SOMEONE
Type the correct answer in the box. Use numerals instead of words. If necessary, use / for the fraction bar.
The average daily maximum temperature in Syracuse is 21.85°C, and the average daily minimum temperature is -4.7°C. The average daily maximum temperature is
°C higher than the average daily minimum temperature.

Answers

The answer is about 35.62

For the story, select an equation that describes the relationship between the two quantities.
1. Diego collected x kg of recycling. Lin collected 2/5 more than that.
2. Lin biked x km. Diego biked 3/10 less than that.
3. Diego read for x minutes. Lin read 4/7 of that.

Answers

Answer:

hope this helps

Step-by-step explanation:

1 i believe because its the only one that says "more than". The other two say less than.

Answer:

1.

Step-by-step explanation:

Help please I will give The Brainliest!

Answers

there are 8 lilies
and
there are 4 tulips

so the four tulips are 8x3=24 plus the 4 tulips that cost 2$ should= 32

What does Point P on the number line represent? (Use the hyphen for negative numbers, such as −9)

Number line from negative 8 to positive 10 in increments of 1 is shown. Only the even numbers are labeled. A point labeled P is placed at the third tick mark to the left of 0.

Answers

Answer:

-7

Step-by-step explanation:

SRRY IF I'M WRONG IM ONLY IN 7TH GRADE BUT MY PROFILE SAYS HIGH SCHOOL srry:(

Answer:

-7 im pretty sure if wrong so so sorry

Step-by-step explanation:

The figure below shows similar triangles, which of the following is TRUE about the length of side x?

Answers

Answer:a

Step-by-step explanation:

Answer a I think ya that sounds right

Stan The Boyz
Stream Stealer

Answers

Ummmmmm whatttt I’m confuseddd

Answer:

what are you trying to say

Step-by-step explanation:

In order to solve for the variable in the equation 2 (x + 3) + 5 x = 3 (2 x minus 1), Jaleesa begins by applying the distributive property, then combines like terms. Which equation is the result of these steps?
7 x + 6 = 6 x minus 3
2 x + 6 + 5 x = 6 x minus 3
2 x + 3 + 5 x = 6 x minus 1
7 x + 3 = 6 x minus 1

Answers

Answer:

7x + 6 = 6x - 3

Step-by-step explanation:

2(x+3) + 5x = 3(2x-1)

Distribute

2x + 6 + 5x = 6x - 3

Combine like terms

7x + 6 = 6x - 3

hope this helps

Find the Unit Rate: Allison bought 6 pounds of bananas for $10.50.

Answers

Answer:

25.3

Step-by-step explanation:

every pound is $1.75
10.50/6= 1.75

I know this isn't math but science isn't an option lol
Scientists are able to make observations and inferences about what is below the crust of Earth by using scientific evidence. Which of these are examples of evidence that scientists use to discover what the layers of Earth’s crust are like? Choose the two that apply.

Answers

Answer:

Step-by-step explanation:

Answer:  seismic waves &  samples of rock

Explanation: Scientists record the seismic waves caused from the waveforms of different earthquakes to infer the structures below the crust of the Earth. They record these seismic waves through seismographs from a machine called the seismometer. Scientists also observe the samples of broken rock that they get from the destruction multiple different earthquakes to make comparisons and studies to provide us details of what the bottom of Earth’s crust looks like.

(I did some research for you and found someone else already had this question, this was their answer, I hope it helps!)

Error Analysis Find (4) (-5) (-3) . Use pencil and paper. Describe an error you could make that results in the opposite of the correct product. nothing

Answers

Answer:

He didn’t do his math right

Step-by-step explanation:

Answer asap! You need to answer this now.

Answers

Answer:

146 cubic inches. 9 x 10= 90

8 x 7= 56

56+90=146

The answer is 146 cubic inches

If I had 34 Hershey bars and I ate 2, but I get 69 more and you divide that by 420 what do you get?

Answers

Answer:

0.24

Step-by-step explanation:

also i see what you did there

HELPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP

Answers

Answer:

y/6-6

Step-by-step explanation:

looked it up

Help meeeeeeeeeeeeeeee

Answers

Answer:

I dont know

Step-by-step explanation:

Please answer now!!! Thanks.

1) A plumber has a very long piece of pipe that is used to run city water parallel to a major roadway. The pipe is cut into two sections. One section of pipe is 12 ft. shorter than the other. If 3/4 of the length of the shorter pipe is 120 ft., how long is the longer piece of the pipe?

.

A) 3/4 x - 12 = 120

B) 3/4 x = 120

C) 3/4 x + 12 = 120

D) 3/4(x - 12) = 120

.


2) Kym switched cell phone plans. She signed up for a new plan that will save her $3.50 per month compared to her old cell phone plan. The cost of the new phone plan for an entire year is $294. How much did Kym pay per month under her old phone plan?

.

A) 12p - 3.50 = 294

B) 12(p - 3.50) = 294

C) 12p + 3.50 = 294

D) 3.50(p - 12) = 294

Answers

B and A if Im not wrong hope I didn’t get it wrong
Its b and A for sure

For the following equations, draw a picture of the tiles on an Equation Mat. Then use “legal” moves to simplify and solve for the variable.


a. -2+x = -x+2


b. 2+3x = x+7

Answers

I can solve these for you

a:
-2+x=-x+2
+2 +2
x=-x+4
+x +x
2x=4
— —
2 2
x=2

so the solution to a is x=2


b:
2+3x=x+7
-2 -2
3x=x+5
-x -x
2x=5
__ __
2 2
x=2.5, or 2 1/2

so the solution to b is x= 2 1/2

I have a few questions!

How many units are in between the distance of (−4, 9) and (−4, 3)?

How many units are in between the distance (−4, 9), (−4, 3), and (1, 3)?

How many units are in between the distance (−4, 9), (−4, 3), and (−4, −8)?

Thank you!

Answers

first one is 6 units down
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