13 was subtracted form a number and that difference was then divided by 5. After which, that quotient was multiplied by 7. The resulting product was -7. What was the number?

Answers

Answer 1

Answer:the number is 8

Step-by-step explanation:

Step 1

Let x be the number  13 was subtracted from so  that the difference becomes x-13

i.  dividing  the resulting difference by 5, then  (x-13)/5

ii.  Multiplying  the quotient by 7 makes  the expression become (x-13)/5 x 7

 with the product coming  to -7  we have our final equation as

(x-13)/5 x 7 = -7

Step 2 -----solving  the equation

(x-13)/5 x 7 = -7

Ist  divide  both sides by 7,

(x-13)/5 =-1

cross multiplying gives

x-13=-5

x= -5+ 13

x=8

the number is 8


Related Questions

can u please answer the question

Answers

Answer:  6 pieces

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

Explanation:

3/4 = 6/8 after multiplying both parts by 2

We have a ribbon that is 6/8 of an inch long. We want to cut it into 1/8 inch pieces. We can see there will be exactly 6 pieces

Note how 6*(1/8) = 6/8

Or we can think of it as "we have a ribbon that is 6 units long and we want to cut it into pieces that are 1 unit each, so we'll have 6 pieces total". Replace "unit" with "1/8 inch" and you'll have the same idea.

Answer:

6 pieces

Step-by-step explanation:

1/8 + 1/8 + 1/8 + 1/8 + 1/8 + 1/8 = 6/8 = 3/4

Please help i need an A

Answers

Answer:

(1) 820

(2) 1920

Step-by-step explanation:

(1) solving 20 x 41, using associative property.

20 * 41  = (2 x 10) x 41  = 2 x (10 x 41)

             = 20 x 41         = 2 x 410

             = 820              =  820

(2) distribute 32 as 30 + 2 and solve.

     60 x 32

  = 60 x (30 + 2) = 60(30) + 60(2)

                        = 1800 + 120

                        = 1920

             

EXERC
1. Calculate the volume of the shape below:
1 CM
3.5 cm
10 cm. how do u calculate the cylinder ​

Answers

Answer:551.3212cm³

Step-by-step explanation:

Find the image attached

The volume is made up of a cone, cylinder and a hemisphere

Volume of the shape = Volume of cone + volume of cylinder + volume of hemisphere

Get the volume of the cone;

Volume of a cone Vc = 1/3πr²h

r is the base radius = 3.5cm

Height = 10cm

Vc = 1/3π(3.5)²(6)

Vc = 1/3π(12.25)(6)

Vc = 12.25 * 2π

Vc = 24.5π cm³

Get the volume of the cylinder;

Vcy = πr²h

r = 3.5cm

h = 10cm

Vcy = π(3.5)²(10)

Vcy = π(12.25)(10)

Vcy = π(122.5)

Vcy = 122.5π cm³

Get rhe volume of the hemisphere;

Volume of hemisphere = 2/3 πr³

r = 3.5cm

Vh =  2/3 π(3.5)³

Vh = 2/3π(42.875)

Vh = 28.58π cm³

Volume of the shape = VC + Vcy + Vh

Volume of the shape = 24.5π+122.5π+28.58π

Volume of the shape = 175.58π

Volume of the shape = 551.3212cm³

In ΔKLM, the measure of ∠M=90°, LK = 89, ML = 80, and KM = 39. What ratio represents the tangent of ∠K?

Answers

I am just trying to get point not right answer 89 ml = 80 km = 39

Find the value of x.
540
x
1420

Answers

Answer:

x=88 degrees

Step-by-step explanation:

the angle opposite x and 54 is 38 degrees. if one angle is 54, one is 38, add those together, subtract from 180 and you get 88.

x^2y-7xy^2 + 5x +y^6
The degree of the polynomial is

Answers

Answer:

6

Step-by-step explanation:

I'm not sure with this pls help....asap....I really need help fasttt please.....I'll mark brainliest!!!!!!​

Answers

Answer:

Im pretty sure the first is -2 and -3. then -4 and-10

Step-by-step explanation:

thats all i know srry

1)

First box: -10

Second box: -2

Plug in the corresponding numbers to the corresponding boxes:

[(-10)/(-2)]/5 = 1

Simplify. First, solve the bracket. Note that when you divide two negative numbers, the answer will be positive.

(-10)/(-2) = 5

Next, divide the brackets:

[5]/5 = 1

1 = 1 (True)

2)

First box: -5

Second box: -3

Plug in the corresponding numbers to the corresponding boxes:

[5 - (-5)]/[(-3) + 8] = 2

Simplify. First, solve the brackets, then divide:

[5 - (-5)] = [5 + 5] = 10

[-3 + 8] = [8 - 3] = 5

Divide:

10/5 = 2

2 = 2 (True)

3) Use the last two numbers:

First box: -11

Second box: -4

Plug in the corresponding numbers to the corresponding boxes:

(-([-11]) x 2)/(6 + [-4]) = 11

-(-11 x 2)/(6 - 4) = 11

-(-22)/(2) = 11

22/2 = 11

11 = 11 (True).

~

Diego is waiting in line and is the 23rd customer. He thinks that he should get farther back in line in order to get a prize. Is he right? If so, how far back should he go to get at least one prize? Explain your reasoning.

Answers

Answer:

Yes he is right. He has to move one step behind to get an award.

Step-by-step explanation:

Here is the full question:

Lin’s uncle is opening a bakery. On the bakery’s grand opening day, he plans to give away prizes to the first 50 customers that enter the shop. Every fifth customer will get a free bagel. Every ninth customer will get a free blueberry muffin. Every 12th customer will get a free slice of carrot cake.

To answer the above question, we already know that Diego is standing in the 23rd position and it is said that every 12th customer will get a free slice of carrot cake. Therefore, those on position 12, 24, 36, 48, . . . will get this award. Simply put, those in positions that are multiples of 12.

Since Diego is thinking of moving farther backwards to get an award, then he is right. Also, he has to move just one step behind to be in a multiple of 12, that is move from 23 to 24, to get an award.

Which expression is equivalent to -8x^6/ 4x^-3

Answers

Answer:

Step-by-step explanation:

It’s 4x^3+(x2)(x-4)b.-4(x^3-2)+x...

(1 pt
Find a formula for P = f(t), the size of the population that begins in year t=0 with 2140 members and decreases at a 3.8% annual rate. Assume
that time is measured in years

Answers

Answer:

The formula f(t) will be:

[tex]\:f\left(t\right)=2150\left(0.962\right)^t[/tex]              

Step-by-step explanation:

We know that exponential decline in Maths can be termed as a consistent reduction of an amount by percentage over a certain period of time.

It can be expressed using the formula

[tex]f\left(t\right)=\:a\:\left(1-b\right)^t[/tex]

here

f(t) represents the final amount

a represents the original amount

b represents the decay factor

t represents the amount that has passed

Now, map our problem using the same concept formula

as

2150 members are at the beginning, so

a = 2150  

as the size of the population has been experiencing an annual decline of 3.8%. so

b = 3.8%= 0.038

so substituting b = 0.038 and a = 2150  

[tex]P=f\left(t\right)=\:a\:\left(1-b\right)^t[/tex]

[tex]\:f\left(t\right)=2150\left(1-0.038\right)^t[/tex]

[tex]\:f\left(t\right)=2150\left(0.962\right)^t[/tex]

Therefore, the formula f(t) will be:

[tex]\:f\left(t\right)=2150\left(0.962\right)^t[/tex]              

Simplify the expression.
35(12)(5)

1. 5/36
2. 36
3. 12/5
4. 36/5

Answers

Answer: The answer is 36/5?

Step-by-step explanation:

A room is 12m 15m long and 8m 91 cm broad .The floor of the room is tobe paved with squared tiles find the lenght of the largest tile that can be used

Answers

Answer:

81 cm

Step-by-step explanation:

Length of a room = 12m 15cm

Width of a room = 8 m 91 cm

12 m 15 cm = 1200 cm + 15 cm = 1215 cm

8 m 91 cm = 800 cm + 91 cm = 891 cm

The floor of the room is tobe paved with squared tiles. We need to find the length of the largest tile that can be used.

To find it we can find the HCF of 1215 cm and 891 cm.

Prime factorization of 1215 = 3 x 3 x 3 x 3 x 3 x 5

Prime factorization of 891 = 3 x 3 x 3 x 3 x 11

HCF = 3 x 3 x 3 x 3

= 81

Hence, the length of the largest tile that can be used is 81 cm.

Very Easy Question) Round 571,984 To The Nearest 100 ! )

Answers

Answer:

572,000 thats your answer

Answer:

572,000

Step-by-step explanation:

Solve for x: x - 24 = 25 *

Answers

The answer will be x=49

Answer:

x=49

Step-by-step explanation:

x - 24 = 25

If you add 24+25=49

You can check by subtracting 49-24=??

Hope that help.Add me.Also give me Brainiest Please

PLEASE HELP ILL GIVE BRAINLIEST!!

Answers

Answer:

yellow

Step-by-step explanation:

help me with this please​

Answers

Answer:

A baseball diamond is a square with sides of 90 feet. What is the distance to the nearest tenth of a foot between home and second base?

Step-by-step explanation:

127.3 feet This problem requires the use of pythagoras theorem. Ignore the face that it's a baseball diamond. All you're concerned with is that you have a square that's 90 feet per side and you want to know what the length of the diagonal. So you have a right triangle with 2 sides of 90 feet each and you want to know the length of the hypotenuse. The formula is C^2 = A^2 + B^2 Both A and B are 90, so plugging them into the formula gives C^2 = 90^2 + 90^2 = 8100 + 8100 = 16200 So C^2 = 16200 Take the square root of both sides C = 127.2792 Round to the nearest tenth, giving C = 127.3

In ΔSTU, s = 730 cm, t = 270 cm and ∠U=125°. Find the length of u, to the nearest centimeter.

Answers

Answer:912

Step-by-step explanation:

deltamath

What is the GCF of 105x,30x and 75x?
I

Answers

Answer:

15x

Step-by-step explanation:

2-3 Additional Pracitce

Parallel Lines and Triangle Angle Sums

Exercises 13-15

Answers

Answer:

13. The measure of a is 35°

14. The measure of b is 74°

15. The measure of c is 66°

Step-by-step explanation:

In the given figure

13.

∵ The sum of the measures of the interior angles of a triangle is 180°

33° + 112° + a = 180°

→ Add the like terms in the left side

∴ 145° + a = 180

→ Subtract 145° from both sides

∵ 145° - 145° + a = 180° - 145°

a = 35°

14.

∵ a, 71° and b formed a straight line

∵ The sum of the measures of the linear angles is 180°

a + 71° + b = 180°

→ Substitute the value of a

∴ 35° + 71° + b = 180°

→ Add the like terms in the left side

∴ 106° + b = 180°

→ Subtract 106° from both sides

∵ 106° - 106° + b = 180° - 106°

b = 74°

15.

∵ The sum of the measures of the interior angles of a triangle is 180°

43° + 71° + c = 180°

→ Add the like terms in the left side

∴ 114° + c = 180°

→ Subtract 114° from both sides

∵ 114° - 114° + c = 180° - 114°

c = 66°

PLS HELP ASAP I DONT HAVE TIME IT ALSO DETECT IF ITS RIGHT OR WRONG!!

Answers

Answeefefeefefeefefe

lanation:

anwer it on ur, own nah im just kidding bruh i gatchu

i think it would be 24.3 because the shadow is being cast farther than the tree to you would want to divide the shadow of the mailbox by the actual height of the mailbox then times that by tree

Convert 7 months into days.

Answers

Answer:

212 days are in 7 months

Answer:210 days in 7 months

Step-by-step explanation:

ldentify the slope of the line y = 4.

Answers

The slope is easy. It’s 0 and the y-intercept is (0,4).

The mean weight for team A with 15 members is 140 pounds, the mean weight for team B with 7 members is 135 pounds, and mean weight for team C with 20 members is 160 pounds. The overall mean weight for all three teams is

Answers

Answer:

86.74 pounds

Step-by-step explanation:

Team A

The mean weight for team A with 15 members is 140 pounds

Total weight for Team A = Mean × number is members

= 15 × 140 pounds

= 2100 pounds

Team B

The mean weight for team B with 7 members is 135 pounds

Total weight for Team B = Mean × number is members

= 7 × 135 pounds

= 945 pounds

Team C

Mean weight for team C with 20 members is 160 pounds.

Total weight for Team C = Mean × number is members

= 20 × 160 pounds

= 3200 pounds

The total number of members from the 3 teams =( 15 + 7 + 20) members

= 42 members

The total weight in pounds from the 3 teams = (2100 + 945 + 3200)

= 6245 pounds

The overall mean weight for all three teams is calculated as:

6245/42 members

= 86.736111111 pounds

Approximately = 86.74 pounds

If any one knows French math I need help

Answers

Answer:

I dont speak french but if you translate it for me Im pretty sure I could most definitely solve this :)

Step-by-step explanation:

7 cm 4 cm 2 cm
the last one is a 2 cm​

Answers

112 is the answer if you still need help with this my g

Answer:

56cmSq

Step-by-step explanation:

4*7*2

4*7 = 28

28*2 = 56

The points on the graphs represent relations. Classify these relations according to whether or not they are functions.

Answers

Answer:

1 and 2 is a function.But the third one isn't.

explanation:

When there is more than one point on a vertical line that is not a function.Like in the third picture points (2,1) and (2,-1) are on the same vertical line.

P.S: it is a function if there is more than one point on a horizontal line.

Why you may ask:

x are the domain, y are the codomain. X can have multiple Y but Y can't have more than one X. To embody: think Xs as mothers and Ys as childrens , a mother can have more than one children but every children can have only one biological mother.


Pls help me!asap and have a good day tysm......

Answers

Answer:

Simplified: C/2 -4

Step-by-step explanation:

the "/" means fraction

What is the decimal expansion of the following fraction 1/5 A.0.2 B.1.5 C.0.2 D.0.15

Answers

The answer is A) 0.2

10. The perimeter of a rectangle is 96m. Its length is double its breadth. Find its length and breadth.
11. Observe the following and identify the type of angles in them.​

Answers

Answer:

breadth=16cm and length=32cm

Let breadth be X

According to question,

lengtg=2X

Now,

Perimeter=2(l+b)

or,96=2(2X+X)

or,96=2(3X)

or,96=6X

or,96/6=X

or,X=16cm.

length =32 cm and breadth =16 cm

Answer:

length = 32 cm, breadth = 16 cm

Step-by-step explanation:

let breadth be b then length is 2b, then

2b + 2(2b) = 96

2b + 4b = 96

6b = 96 ( divide both sides by 6 )

b = 16

Thus

breadth = 16 cm and length = 2 × 16 = 32 cm

pls help meh again ill give brainliest i gave it last time so yeh pcture in question

Answers

Answer:

4.6%

Step-by-step explanation:

Percentage = [tex]\frac{5.05-4.82}{5.05}*100[/tex]

                   [tex]= \frac{0.23}{5.05}*100\\\\= 4.55[/tex]

                   = 4.6 %

Answer:

4.55445545% or 4.6% rounded to nearest tenth

Step-by-step explanation:

((5.05 - 4.82) / 5.05) * 100

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