Mathematics College

a number increased by 9 is 13

Answers

Answer 1

Answer:

4

Step-by-step explanation:

To find the number you have to reverse the equation

Let us call the number "x"

x + 9 = 13

So to find x we flip the equation

13 - 9 = x

Solve it

4 = x

So the missing number is 4

Related Questions

1) John is a mountaineer. He went on a long hike. He
started his bike at 250 feet above sea level. When he
reached the peak of the mountain, he was at
1,500 feet above sea level. How many feet did
John hike up the mountain?

Answers

Answer:

1,250 feet.

Step-by-step explanation:

1500-250=1250

3. Solve for x. Round to the nearest tenth.
14
х
49°

Answers

So for this triangle you are going to use Cos, which is adjacent/hypotenuse.
In this case x is your hypotenuse.

So your equation is going to be Cos(49)= 14/x.
So in order to get x, you are going to have to multiply x by each side. So:

x • Cos(49)= 14/x • x.
Multiplying x and x is going to cancel each other out so your new equation is going to be:

xCos(49)=14.

Now we are going to divide each side by Cos(49). Dividing Cos(49) by itself, will cancel itself out, so then your new equation will be:

x = 14/Cos(49)

Now you are going to put that into your calculator and your answer will be

x = 9.18.

If i’m wrong please tell me and correct me.
Here is a photo of you don’t understand.

Which value from the set makes 54/x=9
true?
A.54
B.45
C.27
D.6​

Answers

Answer:

D

Step-by-step explanation:

D. 6

9 times 6 is 54.

HELP DUE IN 3 MINUTES!! PLEASEEEEEE HELP ME! PLZZZZ

Answers

Answer: 28.33cm

Step-by-step explanation:

Please help anyone please

Answers

Answer:

A=(-5,-4)

B=(-5,-1)

C=(-2,-1)

Step-by-step explanation:

Solve x2 + 12x = –11 by completing the square. Which is the solution set of the equation? {–11, –1} {–11, 1} {11, –1} {11, 1} , PLEASE HURRY !! :( THANK YOU!

Answers

Answer:

{–11, –1}

Step-by-step explanation:

hope that helps

please mark as brainliest if correct

thank you

19NBoli

Answer:

x2

Step-by-step explanation:

x2+12x+11=0

x2+(11+1)x+11=0

x2+11x+1x+11=0

x(x+11)+1(x+11)=0

(x+11)(x+1)=0

either,

x+11=0

x=-11

OR,

x+1=0

x=-1

{-11,-1}

What is the value of x in the equation 2/3x = 12

Answers

Answer:

x = 8

The value of 'x' is 8

Step-by-step explanation:

2/3(8)=12

2/(24)=12

Good luck!!

3x-15+10m-2x ; x=5 and m=7
evaluate the expression for the given value of the variable.

Answers

3(5)-15+10(7)-2(5)
15-15+70-10
=60
The answer is 60

HELPPPPPPPPPPPPPPPPPPPP

Answers

Answer:

around 13.18

Step-by-step explanation:

the middle square is 2*2 = 4

the triangle then is 2^2 + 6^2 = 40  -> sqrt40 = 6.325

and then 2^2 + 2^2 = 8 -> sqrt8 = 2.828

4+6.325+2.828 = 13.18

Answer:

8

Step-by-step explanation:

because since it is a square all sides are the same length you can either add 2+2+2+2 or you can do 2x2=4x2 which equals 8

Please help me pleasere

Answers

Answer:

7

Step-by-step explanation:

meters
kilometers
1
8,000
20

Answers

Answer:

1800.02 kilometers

Step-by-step explanation:

1 kilometer = 1000 meters

1800020 meters = 1800.02 kilometers

In ΔTUV, v = 240 inches, t = 390 inches and ∠U=71°. Find the area of ΔTUV, to the nearest square inch.

Answers

Answer:

44250

Step-by-step explanation:

delta math

Match the polynomial on the left with the appropriately factored expression on the right.

Answers

Answer:

6x² - 8x = 2x(3x - 4)

6x² - 3x + 8x - 4 = (2x - 1) (3x + 4)

Plz help if correct ill give brailiest

Answers

Answer:

At most 5

At least 0

Step-by-step explanation:

22 - 17 = 5

You can't have no more than 5, and you can have none join at all.

Answer:

At the most, it will be 5

At least  it will be 0

You can't have anymore than 5, and you can have none join at all.

Step-by-step explanation:

22 - 17 = 5

You can't have anymore than 5, and you can have none meet at all.

what is the equation of the line in slope-intercept form?

Answers

Answer:

y = 8x

Step-by-step explanation:

Slope intercept form is y = mx + b

y = y coordinate

m = slope, rise over run

x = x coordinate

b = y-intercept, where the line crosses the y-axis.

y = mx + b

y = 80/10x + 0

y = 8x + 0

y = 8x

Answer:

y=-8x

Step-by-step explanation:

PLEASE HELP ME!!!! I REALLY NEED HELP!

Answers

Answer:

20

Step-by-step explanation:

120*1/5= 24

120*1/3= 40

120*3/10= 36

120-24-40-36= 20

which of the following is true about the function below? 1/√x-6

Answers

Answer:

Assuming the x-6 is under the square root sign, the value must be greater than 6 because you can not have 0 in the domain. That narrows it down to either B or C but since the denominator can not be anything less than 0, your answers will always be positive so that means the answer is Its domain is (6,∞)

Answer:

Its domain is (6,∞) and its range is (0,∞) your welcome :3

Please help ASAP this Is due tomorrow

Answers

Answer:

384 inches²

Step-by-step explanation:

The surface area of a cube is found by using 6a².

6 = the number of sides in a cube

a = the given dimension (in this case, 8 inches long)

SA = (6)8²

SA = 6(64)

SA = 384

Hope this helps, sorry if it’s not what you’re looking for :)

Fine the surface of one yard.

please help .-.

Answers

Answer:

1) 34 square meters

2) 21 square yards

Step-by-step explanation:

1) 7x4=28

1/2x3x2x2=6

28+6= 34 square meters

2)3x3=9

1/2x3x2x4=12

9+12= 21 square yards

CAN SOMEONE HELP ME PLZZZZZZZZZZZZ

Answers

Answer:

C

Step-by-step explanation:

Which of these is the algebraic expression for "5 less than 6 times some number"?

6t - 5
5t - 6
5 - 6t
6 - 5t​

Answers

the answer for the algebraic expression is 5-6t

Can someone help please??

Answers

8^2+15^2=x^2
64+225=x^2
289=x^2
Hypotenuse=17

Find the area of the rhombus. Each indicated distance is half the length of it’s respective diagonal.
(image included)

Answers

Answer:

384 ft²

Step-by-step explanation:

12x16x2=384

*PLEASE HELP GET 10 POINTS AND BRAINLIEST*
Select all the correct answers.
Blologists studying wildlife in the state parks want to estimate the average weight of chipmunks. They measured the weights of 5 chipmunk
from each of 10 parks. The mean of the data was 91 grams, and the median was 87 grams. Which predictions match the data?
About one-half of the chipmunks weigh more than 91 grams.
The average weight of the chipmunks is 87 grams.
About one half of the chipmunks welgh more than 87 grams.
The average weight of the chipmunks is 91 grams.

Answers

Answer-> the average weight of chipmunks is 87 grams. About half of the chipmunks weigh more than 87 grams

Answer:

D is correct

Step-by-step explanation:

Biologists studying wildlife in the state parks want to estimate the average weight of chipmunks. They measured the weights of 5 chipmunks from each of 10 parks. The mean of the data was 91 grams, and the median was 87 grams. Which predictions match the data?

About one-half of the chipmunks weigh more than 91 grams.

The average weight of the chipmunks is 87 grams.

About one-half of the chipmunks weigh more than 87 grams.

The average weight of the chipmunks is 91 grams.

Jordan was planting a garden. She wanted the bottom of the garden to have an area of 48 feet. She wanted the width to be 3/4 the length. What are the dimensions of the garden

Answers

Answer:
Width 6
Length 8

Write the decimal .0006 as a fraction

Answers

Answer:

6/1000

Step-by-step explanation:

.0006 times 10,000

Which expression is equivalent to 28 + 7?
A 7(4 + 1)
B 407 + 1)
C 4(7 + 3)
D 7(4 + 7)

Answers

The expression A is equivalent to 28+7

7 times 4 equals 28 7 times 1 is 7
28+7

Consider the diagram. What is the value of x

Answers

Answer:

x = 6

Step-by-step explanation:

8x + 7x = 90

15x = 90

15x/15 = 90/15

x = 6

what is 2 X (6+ 2 + 8) -4

Answers

Answer:

The correct answer is 32x - 4

Step-by-step explanation:

1) Simplify 6 + 2 to 8.

[tex]2x(8 + 8) - 4[/tex]

2) Simplify 8 + 8 to 16.

[tex]2x \times 16 - 4[/tex]

3) Simplify 2x × 16 to 32x.

[tex]32x - 4[/tex]

Therefor, the answer is 32x - 4.

Asher owns a square plot of lan. He knows that the area of the plot is between 4200 and 4300 square meters.

Answers

Answer:

la respuesta que buscas es bastante simple pero no lo sé

Step-by-step explanation:

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