Mathematics High School

Please help! Thanks!!

Please Help! Thanks!!

Answers

Answer 1

Answer:

x=12

Step-by-step explanation:

(2x-4)/5=4

We move all terms to the left:

(2x-4)/5-(4)=0

We multiply all the terms by the denominator

(2x-4)-4*5=0

We add all the numbers together, and all the variables

(2x-4)-20=0

We get rid of parentheses

2x-4-20=0

We add all the numbers together, and all the variables

2x-24=0

We move all terms containing x to the left, all other terms to the right

2x=24

x=24/2

x=12

Answer 2

Answer:

x = 12

Step-by-step explanation:

Given

[tex]\frac{2x-4}{5}[/tex] = 4 ( multiply both sides by 5 to clear the fraction )

2x - 4 = 20 ( add 4 to both sides )

2x = 24 ( divide both sides by 2 )

x = 12

Related Questions

I NEED AN ANSWER ASAP A surveyor finds the angle of elevation to the top of a building to be 75°. He is 20 meters from the base of the building. How tall is the building?​

Answers

Answer: 74.6

we draw a right triangle ABC, have: ∠ABC = 90°,  AB = 20 and ∠BAC = 75°, the height of the building is BC

we also have: tan 75° = BC/AB = BC/20

=> BC = tan 75°. 20 = 40 + 20√3 ≈ 74.6

Step-by-step explanation:

14 fish out of 100,000 are blue, what would this be as a percentage?

Answers

Answer:

0.014%

Step-by-step explanation:

We need to write 14 out of 100,000 as a fraction. Which makes 14/100,000. Now 14/100,000 as a percent is 0.014%

A pack of 8 batteries costs £5.99 How much does each battery cost?

Answers

Answer:

£0.75 is how much each battery costs.

Step-by-step explanation:

£5.99 ÷ 8 = £0.748

Answer:

75 cents

5.99 divided by 8 is .74 which can be rounded to .75 which is also 75 cents

Find the solution of the system of equations.

First equation,

- 2x - 5y = -15

Second equation,

-9x + 15y = -30


Will mark brainliest

Answers

Answer:

the answer to your equation is (5,1) in point form or x=5,y=1 in equation form.

Step-by-step explanation:

Solve for the first variable in one of the equations, then substitute the result into the other equation. hope this helps. :)

8th POING GIVEAWAY (lol my hands r tired so srry for the typo)

Answers

Answer:

ooo~ yass ʕ·ᴥ·ʔ

(lil person ty)

ヾ(＠⌒▽⌒＠)ﾉ

(virtual hug (∪ ◡ ∪)

Thank you so much, I got it UvU

PLEASE ANSWER FAST!! WIIL GIVE BRAINLIEST
Which equation correctly shows how to determine the distance between the points (9,-2) and (6,3) on a coordinate
grid?
Od-V(6-3)?+ (9-(-2))?
Od-V(6+3)²+(9+(-2))?
)9
O ơ= 6 – 9) + (3-(-2)
d-/6+9)2+(3+(-2)2

Answers

Od-V (6+3) to the 2nd +(9+(-2)) is the correct answer.... In other words the second one.

What is 50% of.......55

Answers

27.5 .,. I need 20 characters so just ignore this part lol

What is Fourteen minus four times y is equal to y increased by 4

Answers

The answer i think is 14-4y=y+4

Analyze the table showing the number of days and cost of the trip.

Answers

Answer:

The answer is 25

Step-by-step explanation:

Please help! :)

Will give brainliest, thank you

Answers

Answer:

y=-3/5x+2

Step-by-step explanation:

slope is -3/5

starting point is 2

10) Find the circumference of the circle.
Use a 3.14

Answers

Answer:

50.24

Step-by-step explanation:

2*3.14*8=50.24

2*pi*r= circumference

help asap i don't understand

Answers

x+4/12=-5/3

3(x+4)=12-5

3x=7

x=7/3

x=2.3

Find the midpoint of a line with endpoints of (2, 6) and (10, 18)

Answers

Answer:

6, 12

Step-by-step explanation:

10-2=8    8/2= 4   2+4= 6

18- 6= 12    12/2= 6   6+6=12

The answer to your question would be 16

at a school
number of boys:number of girls= 11:9
There are 124 more boys than girls.
Work out the total number of students at the school

Answers

Answer:

Total students  = 1240

Step-by-step explanation:

Boys : girls = 11 : 9

Number of boys  = 11x

Number of girls  = 9x

11x - 9x = 124

       2x = 124

         x = 124/2

        x = 62

Number of boys  = 11x = 11 *62 = 682

Number of girls  = 9x   = 9*62    = 558

Total students  = 682 + 558 = 1240

There are 60 students in the school band. 30% of them are sixth graders, 50% are seventh graders, and the rest are eighth graders. a. How many band members are sixth graders? b. How many band members are seventh graders? c. What percentage of the band members are eighth graders? Explain your reasoning.​

Answers

Answer:

there is 12 6th graders 30 7th graders and 12 8th graders and 20% is 8th graders please mark brainlyist

List all 3-digit numbers which are 19 times the sum of their digits.

Answers

Answer:

114, 133, 152, 171, 190, 209, 228, 247, 266, 285, 399

Step-by-step explanation:

These are all the three-digit numbers that are a multiple of 19.

Answer:

114, 133, 152, 171, 190, 209, 228, 247, 266, 285, 399

PLS GIVE BRAINLIEST

HELP MY PARENTS ARGUING ABOUT THIS ASSIGNMENT PLEASE DO THIS HURRY!!!

Answers

I believe the answer are as follows: 1. A 2. B 3. A 4. D 5. B and 6. B

Ala has 24 dollars, Barb has 66 dollars, and Sophia has as many dollars more than Ala as she has less
than Barb.
How many dollars does Sophia have?
A) $35
B) $42
C) $45
D) $48

Answers

Answer:42

Step-by-step explanation:

Help please im very lost

Answers

Answer:

pretty sure it is zero

Step-by-step explanation:

There are two x's of the same value so presumably the line is vertical which would mean it has no slope and could only be described as zero

Answer:

Step-by-step explanation:

Find the slope. Use m = y2-y1/x2-x1 form

So, -4-(-17)/-6-(-6)

This = 13/0

Which = undefined.

The slope is undefined.

need help please, ASAP

Answers

Answer:

BC ≅ YX and ∠A ≅ ∠X

Step-by-step explanation:

Answer:

the answer is the last one BC is congruent to yz and a and x

Step-by-step explanation:

the lenght of the floor is 32 m longer than its width and there is greater than 200 square meters. you will cover the floor completely with tiles. what will be the possible dimension of the floor?

Answers

Let’s assume the width of the floor is x and the area is a

To figure out the dimensions we need to figure out the value of the variable (x)

This means that the length is xm+32m (the m is for metres) and that the area is a>200m2

Because it says what is the possible dimensions let make the area 201m2

The formula for the area of a rectangle is length times width so the equation we use to figure out the value of x


201=x+x+32

So let’s collect like terms and solve from there
201=2x+32
201-32=2x+32-32
169=2x
169/2=2x/2
84.5=x

Now that we know the value of x is 84.5 we can figure out the length is 116.5m and the width is 84.5m

Therefore the dimensions of the floor is 116.5m by 84.5m

Twice Sam's age added to half her mother's age is 48. Three times her age less one third of her
mother's age is 33. How old are Sam and her mother?

Answers

Answer:

Sam is 15 and her mother is 36

Step-by-step explanation:

Let Sam's age be x and her mother's age by y

We can figure out Sam and her mother's age by representing these scenarios using equations with variables and solving the system using elimination

2x+y/2=48

3x-1/3y=33

You start by making all the numbers in both the equations whole

2(2x+y/2=48)

3(3x-1/3y=33)

Becomes:

4x+y=96

9x-y=99

Add together to eliminate y

13x/13=195/13

x=15

Now that we have x we can plug the value into the x in the equations to give us the y-value

2x15+y/2=48

30+y/2=48

30+y/2-30=48-30

y/2=18

2 X y/2=18 X 2

y=36

Therefore x=15 and y=36

Marcus can rap about 42 words per minute. If he raps at this rate for 30 minutes without stopping, about how many words will he rap?

A) 1260
B) 2100
C) 2520
D) 4200

Answers

A, 1260 words per minute

A number with three digits will open up this lock. These clues will help you find it before the turkey burns hard as a rock. Drawing a number line might help you too, Enter the number below when you are through! My number has ones, tenths, and hundredths Rounding to the nearest whole number, you get 4 Rounding it to the nearest tenth, you get 3.5 The number of hundredths is greater than 3 7​

Answers

Answer:

7.77

Step-by-step explanation:

nearest one = 4

nearest ten = 0.35

nearest hundreth = more than 37

--4

-3.5

<.37-

+__

7.77

i think thats it. pls dont let turkey roast alive D:

Help pls!
U don’t need to explain

Answers

12x-18–4x-2

bonus : x=2

Someone plz help me with this

Answers

Answer:

2.20 y axis 2years T x axis is the answer

Select the slope-intercept form of an equation for a line with y-intercept –5 and slope 2. A. x = 2x + 5 B. y = 2x – 5 C. y = 5x – 2 D. y = –5x + 2

Answers

Answer:

y=2x-5

Step-by-step explanation:

slope intercept form is y=mx+b

m=slope

b=y-intercept

Answer: y = 2x - 5

slope-intercept form ⇒ y = mx + b

⇒ where mx is the slope,

⇒ b is the y-intercept

⇒According to the question;

mx which is the slope = 2

b the y-intercept = -5

∴ the equation is

two times x divide five

Answers

Answer:

2x/5

Step-by-step explanation:

Can sum1 help me plz
A square garden has an area of 53.29 square meters. What is the length of each side of the garden?

1) 3.8m
2) 7.3m
3) 13.3m
4) 26.6m

Answers

The answer is 3) 13.3m

Answer:

7.3m

Step-by-step explanation:

Area is l * w

The length and width of a square are the same, so that means we can use square root for this problem.

The square root of 53.29 is 7.3

7.3*7.3 = 53.29 (<- to double check)

(-6)(-2)(-1) =

‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎

Answers

-6 times -2 is 12
12 times -1 is -12
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