Mathematics High School

three less than twice a number is fifteen

what is the answer?

Answers

Answer 1

Answer:

2X–3 =15

2X=15+3

2X=18

X=18/2

X= 9

I hope I helped you^_^

Answer 2

Answer:

18

Step-by-step explanation:

SEE THE IMAGE FOR SOLUTION

HOPE IT HELPS

HAVE A GREAT DAY

Three Less Than Twice A Number Is Fifteenwhat Is The Answer?

Related Questions

PLEASE HELP MARK BRAINLIESTS!!!!

Answers

Answer:

x=15 y=3

Both (4x+10y) and (6x) equal 90 degrees, as angle 4x+10y is vertical to a 90 degree right angle, and angle 6x is directly  beneath the right angle, making it equivalent. To find x, you simply do 90/6, which is 15, meaning x=15. Now plug in that into 4x+10y=90, which will make it 60+10y=90. Subtract 60 from 90, and divide the difference, 30, by 10, giving you 3, thus showing that y=3. You can double check by plugging in the x and y values.

Jennifer has 21 pencils she gives 21 pencils to her teacher write an equation that represents this situation

Answers

J=21 T=0
21-21=0
J has 0 left.
T has 21 left.

What is the solution to the system of equations below?

4x + 2y = 2

3x – 4y = 18

Answers

Answer:

here your answer

hope it help

I don't want the answer I just want to know how to do it​

Answers

Answer:

1st- thorn forest - forest which have many thorns it is in rajasthan

2nd- evergreen forest - a forest whose trees are rest green in any season

3rd- Amazon forest - in Amazon forests there are many poisonous snake, frogs etc. like anacondas and wild animals.

Step-by-step explanation:

Tính nhanh : a) 35-7*(5-18) ; b) 217-(-83)+99-(93+99) ; c) [4*(-5)^2-(31-17)]:2

Answers

This is my answer......

Your college professor tells you he will give a 30%-30%-40% split on grades between homework, quizzes, and test. However whichever category you have the highest average in will be the 40% category.

What will your final grade be if your homework average is 60, you quiz average is 70, and your test average is 95?

Answers

Answer:

Your final grade will be 77%

Step-by-step explanation:

40% will be from your test average which is 95

30% will be from your homework average which is 60

30% will be from your quiz average which is 70

Calculating based on these weights:

(40×95+30×60+30×70) / (40+30+30) = 7700 / 100 = 77.00%

Given f(x) = x ^ 2 + 2x and g(x) = x - 1 , find (fg)(x)

A) x^3 + 2x^2
B) x^3 + x^2 + 2x
C) x^3 - x^2 - 2x
D) x^3 + x^2 - 2x

Answers

Heya !! here's your solution :

[tex] \hookrightarrow \: ( {x}^{2} + 2x) \times (x - 1)[/tex]

[tex] \hookrightarrow \: \: {x}^{3} - {x}^{2} + 2 {x}^{2} - 2x[/tex]

[tex] \hookrightarrow \: {x}^{3} + {x}^{2} - 2x[/tex]

therefore , the correct Option is D

Put the following equation of a line into slope-intercept form, simplifying all
fractions.
3 + 5y = –20
Answer:
Submit Answer
PLS HELP ASAP

Answers

Answer: y = -23/5

Step-by-step explanation:

Decimal Form : -4.6

Mixed Number : -4 3/5

Scils Practice convert the following factions into decimals. You must show your work.


How can I turn the fraction 3/12 into a decimal?

Answers

ANSWER:
0.25

work shown

hillary is cycling across montana taking a 845 mile course . the first week she covered.320 miles. the second week she traveled another 350 miles. how many more miles does she have to travel to complete course?

Answers

Answer:

175 miles

Step-by-step explanation:

Hillary has travelled

320 + 350 = 670 miles

in the first two weeks.

Therefore, Hillary starts with 670 miles and needs to add a certain number of miles "x" to get 845 in total.

670 + x = 845

And if we subtract 670 from both sides:

x = 845 - 670 = 175

175 miles

What is meant by the term formula in mathematics? Give an
example.

Answers

Hey there!

Formula

The formula is a fact or a rule written with mathematical symbols. It usually connects two or more quantities with an equal to sign. When you know the value of one quantity, you can find the value of the other using the formula.

Examples of formula:

Perimeter of rectangle = 2(length + width)

Hope it help you

Ankit's father is five years older than three times of Ankit's age. 50 years old, then calculate the present age of Ankit

Answers

Step-by-step explanation:

Let,

Ankit's age = x

So, ankit's father's age = 3x + 5

Given,

Age of Ankit's father's age = 50

Therefore,

By the problem,

=> 3x + 5 = 50

=> 3x = 50 - 5

=> 3x = 45

[tex] = > x = \frac{45}{3} [/tex]

=> x = 15

Hence,

Present age of Ankit is 15 years (Ans)

please help me :/ you will get 20 points and i will mark brainliest this is for math ;-; again
the picture is attached below but please look at the picture
just in case you cant read what my writing says it says this
The greatest integar function shown below is defined to be the greatest _______ less than or equal to x.

Answers

Answer:

equal to x

Step-by-step explanation:

ILL MARK BRAINIEST IF YOU DO THIS CORRECTLY

Answers

the answer is 5,6,6,7

write the equation of the line passing through point 2, 5 and parallel to y=-1/2x-2​

Answers

Answer:

option b

Step-by-step explanation:

explaination is in picture

Answer:

2nd option

Step-by-step explanation:

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

y = - [tex]\frac{1}{2}[/tex] x - 2 ← is in slope- intercept form

with slope m = - [tex]\frac{1}{2}[/tex]

Parallel lines have equal slopes , then

y = - [tex]\frac{1}{2}[/tex] x + c ← is the partial equation

To find c substitute (2, 5) into the partial equation

5 = - 1 + c ⇒ c = 5 + 1 = 6

y = - [tex]\frac{1}{2}[/tex] x + 6 ← equation of line

Draw a line representing the "rise" and a line representing the "run" of the line. State
the slope of the line in simplest form.

Answers

y=x+5, or you could but y=1x+5 it’s the same thing

A piece of string is 28 cm long. It is used to from a square. (a) what is the length of each side of square? (b) what is the area of the square.?​

Answers

Answer:

7 cm and 49 cm²

Step-by-step explanation:

(a)

A square has 4 equal sides , then

28 cm ÷ 4 = 7 cm

The length of each side of the square is 7 cm

(b)

The area (A) of a square is

A = s² ( s is the side length ) , then

A = 7² = 49 cm²

Answer:

Step-by-step explanation:

Perimeter of square will be equal to the length of the  string

Perimeter of square = 28 cm

4*side = 28

Divide both sides by 4

Side = 28/4

Side = 7 cm

b) Area of square = side * side

                             = 7 * 7

                             =49 cm²

A mountain is 18,574 feet above sea level, and a valley is 400 feet below sea level. What is the difference in elevation between the mountain and the valley?

Answers

18,974 feet because you add 400 to the total
Because it’s 400 ft under

????????????????????????

Answers

Step-by-step explanation:

This is the required answer.

Keep smiling and hope u r satisfied with my answer.Have a nice day :)

Find the perimeter and area of figures 1-20

Answers

Answer:

figure 1

3 + 3 + 3 + 1 + 1 + 1= 12 units

area is 3x1 + 1x1 + 3x1 = 7 sq units

figure 2

perimeter do the same as figure 1 and youll get

32 units i assume

area do the same as figure

then bueno

Angle sum theorem. y=?

Answers

One is 48, the other is 90 since it is supplementary to the other right angle. All three angles of a triangle always add up to 180 degrees.

So 48+ 90 + x = 180
x = 42 degrees

Are the following proportional? Explain or show
your reasoning
3/5 and 18/25

Answers

Answer:

No, they are not proportional. 3/5 with equal out to 15/25 by using the method of Least Common Denominator!

Step-by-step explanation:

Hope this helps :)

I’m on Acellus and I have to combine like terms. I already got 12x but I can’t seem to get the next number. Can anyone help?

Answers

Answer:

-9

Step-by-step explanation:

9x - 4 + 3x - 5 = 9x + 3x + (-4) + (-5)

12x + (-9)

in a School the monthly fee of a child is ₹ 497 . If there are 2983 students in a school ,find the total fee collected in a month.​

Answers

Answer:

1482551 is correct answer

Evaluate-2xy, if x=-4 and y=1.
32
0-16
0-32
16

Answers

Answer:

8

Step-by-step explanation:

This question asks for us to substitute values of variables into the following equation: -2xy

We know two pieces of information:

x = -4y = 1

All we have to do is substitute the values for variables.

-2xy

-2(-4)(1)

= 8(1)

=8

-2x + 9x5 + 1 - 9x2
What’s the answer to this someone help plz

Answers

Answer:

factored = -2(x-14) Simplified= -2x+28

Step-by-step explanation:

Is the relation a function? Explain


Set-builder notation?


Domain/range?

Answers

Answer:

doamin = set builder nation

Answer:

domain= set builder notation

Prove that an equilateral triangle must have 60 degrees angles

Answers

Step-by-step explanation:

Since all the sides in equilateral triangle are equal ,Angles are also equal

Let it be x

The Angle sum property of triangle is 180

x+x+x=180

3x=180

x= 180/3

=60°

A cylinder has a base area of 154 cm² and a height of 20cm. What is its total surface area, in cm?? Use, 22/7

This is answer A.1188
B.1200
C.1220
D.1224​

Answers

Answer:

Hi there!

We've given with the base area and height. We know the formula for base area

Base area = πr²

154 = 22/7 × r²

154 × 7/22 = r²

49 = r²

√49 = r

7 = r

Now

TSA = 2πr(h + r)

TSA = 2 × 22/7 × 7(7 + 20)

TSA = 44(27)

TSA = 1188 cm²

In the past year Abdul watched 18 movies that he thought were very good. He watched 40 movies over the whole year. Of the movies he watched, what percentage did he rate as very good?

Answers

Answer:

45%

Step-by-step explanation:

18/40

You multiply this by 10/10 to get

180/400

And then you divide by 4 to get

45/100

= 0.45

= 45%

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