Mathematics High School

Please help me I’ll give all my coins!

Answers

Answer 1

x = 3

-4 - 5x + 10x + 9 = 20

-4 + 5x + 9 = 20

5x + 5 = 20

5x + 5 - 5 = 20 - 5

5x = 15

5x/5 = 15/5

x=3

Answer 2

Answer:

x=3

Step-by-step explanation:

-4-5x+10x+9=20 ] +4

-5x+10x+9=20+4 ] -9

-5x+10x=24-9

5x=15

15:5=3

x=3

Related Questions

8. Over a period of 3 hours, the outside temperature changed an average of -2.25 Fahrenheit per hour. Which statement correctly describes the change in the temperature from the beginning to the end of the 3 hour period?

a. The temperature decreased by 0.75 degrees Fahrenheit.

a. The temperature decreased by 0.75 degrees Fahrenheit.

b. The temperature increased by 0.75 degrees Fahrenheit.

b. The temperature increased by 0.75 degrees Fahrenheit.

c. The temperature decreased by 6.75 degrees Fahrenheit.

c. The temperature decreased by 6.75 degrees Fahrenheit.

d. The temperature increased by 6.75 degrees Fahrenheit.

Answers

Answer:

Step-by-step explanation:

-2.25*3 = 6.75 decreased (since negative)

What is the complete factorization of the polynomial below? 3 + 4x2 - X-4

Answers

the answer is 4x^2-x-1

LIS
Find the minimum value of
C = 6x + 7y

Answers

Answer:

x= c−7y/6

Step-by-step explanation:

What does the formula of an ionic compound tell you?

Answers

The overall ionic formula for a compound must be electrically neutral, meaning it has no charge. When writing the formula for the ionic compound, the cation comes first, followed by the anion, both with numeric subscripts to indicate the number of atoms of each.

Find 2 irrational no.s between 3 and 4

Answers

Answer:

The two rational numbers between 3 and 4 are 3.5 and 3.75. Two irrational numbers between 3 and 4 are √11 and √13.

Step-by-step explanation:

Hope it is helpful.....

the 4 angles of heptagon equal and each of other 3 is 20° greater the first 4.Find the angles

Answers

Answer:

interior angle of a heptagon = 900 degrees

900 = 4x + (3x + 60)

840 = 7x

840/7 = 120

X = 120

120 X 4 = 480

120 X 3 = 360

480 + 360 + 60 = 900

4 angles = 120 degrees each

3 angles = 140 degrees each

Brody set his watch 1 second behind, and it falls behind another 9 seconds every day. Write
an equation that shows the relationship between the days since watch was last set x and the
seconds behind y.
Write your answer as an equation with y first, followed by an equals sign.
Answer is you know this?

Answers

Answer:

y = -1 - 9x

Step-by-step explanation:

Brody's watch is already 1 second behind (the constant), and it falls behind 9 more seconds for every day (x).

which graph could represent a function ? ?

Answers

Answer:

The third Graph

Step-by-step explanation:

Using the vertical line test to determine whether or not a graph represents a function. If a vertical line is moved across the graph and, at any time, touches the graph at only one point, then the graph is a function. If the vertical line touches the graph at more than one point, then the graph is not a function.

Answer:

The third Graph

Step-by-step explanation:

I need to know the answer but it would be nice to have the steps too

Answers

Answer:

The perimeter of the rectangle is 27n + 1 feet

Step-by-step explanation:

The formula of the perimeter of the rectangle is P = 2(L + W), where

L is the length of the rectangleW is the width of the rectangle

∵ The width of a rectangle is 7n - 6.5 feet

∴ W = 7n - 6.5 feet

∵ The length of the rectangle is 6.5n + 7 feet

∴ L = 6.5n + 7 feet

→ Substitute W and L in the formula of the perimeter above

∵ P = 2[6.5n + 7 + 7n - 6.5]

→ Add the like terms

∴ P = 2[(6.5n + 7n) + (7 - 6.5)]

∴ P = 2[13.5n + 0.5]

→ Multiply the terms in the bracket by 2

∴ P = 27n + 1

∴ The perimeter of the rectangle is (27n + 1) feet

Tess studied for 2/3 of an hour on Monday and 1 1/2 hours on Tuesday. How much more time did she spend studying on Tuesday than on Monday?

Answers

Answer:

she spent 2 1\6 studying more on tuesday because you got to add

7 ¾ - 1 2/7 - 3/2 = ?????????????????????

Answers

Answer:

31/8 = 3 7/8 = 3.875

Step-by-step explanation:

7 3/4 /2 = 31/8 = 3 7/8 = 3.875

Find the length of the segment with endpoints of (3,2) and (-3,-6).
(Will Mark Brainlyest!)

Answers

Answer:

i think its (x2,y2)=(19,3)

Step-by-step explanation:

sorry if its wrong

Mark tried to pour 36 ounces of tea into 3 cups After filling the cups to the top there was still 13.5 ounces left in his tea pot if each cup is the same size how much tea is in each cup

Answers

Answer:

Step-by-step explanation:

its 12

1 and 2 step equations algebra
What is the Variable
10= 2k + 16

Answers

your answer has to be k=3

What would the equation of the line be that passes through the points (0,-3) and (-5, 4)?

What would the equation of the line be that passes through the points (0,1) and (4,-1)?

Answers

Answer:

formula = y=mx + c

Step-by-step explanation:

(x,y)

m=y2-y1/x2-x1

m =4--3/-5-0

m = 7/-5

the equation =

y = 7/-5 x + c

What percent is represented by the shaded portion on this 10×10 grid

Answers

Oh ok I don’t think

Answer:

75/100% is the correct answer

Step-by-step explanation:

the second one.... you count the shaded in out of 100

What number is 5/8 more than 3/16 ? Show how you calculated your answer.

Answers

Answer:

10/16

Step-by-step explanation:

Find the common factor between both

5/8 = 10/16

10/16 > 3/16

Plz help it due In 20 mins

Answers

Answer:

Slope of line A= -1/3

B=-1

C= -5/4

Step-by-step explanation:

Use: slope m= y-y1/ x-x1

the question is in the picture. will give brainilist

Answers

Answer:9x°

Step-by-step explanation:

Find the value of x.

Answers

Answer:

81 degrees

Step-by-step explanation:

Here,

X+128+100+51=360

X+279=360

X=360-279

:.x=81

Divide
r2/r12

Answers

a. r10
b. 1/r6
c. 1/r10
d.r8
e. r6

Answers

Answer:1 over r to the power of 10 or C

Step-by-step explanation:

Please help me I’ll mark brainliest

Answers

Answer:

Here I just did the Workin out. don't worry it's correct. Have a nice day!!

I need help with this... plz

Answers

Answer: 11,600

you multiply 58,000 by 0.8 and you’d get 46,400. then you would subtract that number by 58,000 to get the answer of 11,600.

What is the LEAST common denominator for 6 and 8

Answers

Answer:

3 4 if u wanna go father 1.5 2

Step-by-step explanation:

Answer:

24 is the lcd for 6 and 8..

hello please help! create an x/y table!
equation: y=-1/3x-2

Answers

Cant see the pic it’s black

select the three objectives mosquitoes hovered around the small puddle of still murky water in the background

Answers

Answer:

Step-by-step explanation:

Work out the value of x

Answers

Answer:

x=35

Step-by-step explanation:

A pentagon's sum of interior angles is 540 degrees.

Now, we can set up an equation.

(4x - 57) + (3x + 15) + 4x + (2x - 3) (3x + 25) = 540

Combine similar terms

16x - 20 = 540

16x = 560

x = 35

The answer would be 35.

What property does
(3 + 19) – 12 = 3 + ( 19 – 12)
represent?

Answers

Answer:

associative property

Step-by-step explanation:

Jinya take the bus across town to school each morning last week he timed his trips and found that the time varies day today the time in minutes or listed below 10 1511 1311

Answers

Question:

Jin Ya take the bus across town to school each morning last week he timed his trips and found that the time varies day today the time in minutes or listed below:

10 15 11 13 11

If you had to use one number to tell someone how long it took Jin Ya to get to school, what would you say?

Answer:

11 minutes or 12 minutes

Step-by-step explanation:

Given:

10 15 11 13 11

Required

Determine one number that summarizes the 5 numbers

First, one can use the mean to get the summary of the numbers.

The mean is calculated as:

[tex]Mean = \frac{Sum\ of\ observation}{Number\ of\ observation}[/tex]

[tex]Mean = \frac{10 + 15 + 11 + 13 + 11}{5}[/tex]

[tex]Mean = \frac{60}{5}[/tex]

[tex]Mean = 12[/tex]

Another number that summarizes the numbers is the mode of the distribution.

[tex]Mode = Highest\ Occurring\ Value[/tex]

So, in this case:

[tex]Mode = 11[/tex]

Hence, you can either use 11 minutes or 12 minutes.

On average, Shawnee drinks 1/2 of a 6 ounce glass of water in 2/3 hour. How much water does she drink in an hour?

Answers

Answer:

1/2 of 6 = (1/2)*6 = 0.5*6 = 3

Shawnte drinks 3 ounces of water in 2/3 hrs.

3 oz = 2/3 hr

3*(3 oz) = 3*(2/3 hr) .... multiply both sides by 3

9 oz = 2 hrs

She drinks 9 ounces of water in 2 hrs

9/2 oz = 2/2 hrs .... divide both sides by 2

4.5 oz = 1 hr

She drinks 4.5 ounces of water in 1 hour.

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