What is the value 8x=5x+21

Answers

Answer 1
x = 7

8(7) = 5(7) + 21

56 = 35 + 21

56 = 56
Answer 2
X=7 is the answer

8x=5X+21
8x-5x=21
3x=21
X=21/3
X=7

Related Questions


What whole number best approximates the value of x?

Answers

The answer is 87

For this problem, the method I used was more of a guess and check because I simply plugged the options into a calculator to see which one would be closest a little bit past 9.3 but not all the way 9.4

the square root of 87 is 9.32 so you would round down while the square root of 88 is 9.38 which would round up

Hope this helps :)

multiply and find the volume

Answers

Answer:

195 cubic centimeters (cm^3)

Step-by-step explanation:

sorry it's late

The temperature was less than -15°C. Write an equality and three possible solution.​

Answers

Answer:

x < -15*C (I can’t make the degrees sign on my iPad, so I put * instead).

3 Possible Answers:

-38*C

-26*C

-57*C

Step-by-step explanation:

Inequality:

x = temperature

< = less than

-15*C = the amount the temperature was less than

3 Possible Outcomes:

Because the temperature is less than -15*C, it can literally be any number that is farther down the number line. Because it’s a negative number, anything like -14, -13, -12, and so on would actually have a greater value (think of it as in being less in debtm or in this case, less below zero). Instead, you’ll do any number like -16, -17, -18, and so on. You can even do a decimal number, like -19.5. I hope this makes sense to you!

helpppp helping my sister

Answers

Answer:

jus draw a m-f trapizod from googl-e

Step-by-step explanation:

Answer:

A. a regular trapezoid

B. they both have at least a pair of parallel sides

Step-by-step explanation:

Trapezoids have only one pair of parallel sides; parallelograms have two pairs of parallel sides. A trapezoid can never be a parallelogram.

5
?
Find the arc length of the partial circle.
Either enter an exact answer in terms of Tor use 3.14 for and enter your answer as
decimal.
units

Answers

Answer:

its 7.5 pi

Step-by-step explanation:

The length of the arc of the particle circle is equal to  23.55 units

What is the area and circumference of a circle?

The circumference (or) perimeter of a circle = 2πr units. The area of a circle = πr2 square units. Where r is the radius of the circle. The circumference of the circle or the perimeter of the circle is the measurement of the boundary of the circle. Whereas the area of the circle defines the region occupied by the circle.

Given here the radius of the circle as 5 units thus the length of the arc which makes an angle of π-π/2=3π/2 is angle subtended at the centre times the radius of the circle

Arc length = 5×3π/2

                  = 15π/2

                  = 15×3.14 /2

                  = 23.55 units

Hence The length of the arc of the particle circle is equal to  23.55 units

Learn more about circumference of the circle here:

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the area of and rectangle

Answers

Answer:

the are of a rectangle is length x width

The side length of an equilateral triangle is 3x + 9 Which expression represents the perimeter of the triangle?

A. 3x + 18
B. 3x + 27
C. 9x + 9
D. 9x + 27

Answers

the perimeter of the triangle is 3x + 18 yw

Which number is rational?
o 22
O 16

Answers

Square root of 16 because it equals to 4 which is a rational number

Use the first five terms of the trigonometric series to approximate the value of sin to four decimal places. Then compare
the approximation to the actual value.
a. -0.9568, -0.9659
b. -0.9649, -0.9659
C. 0.5884, 0.5878
d. -0.9609, -0.9659

Answers

Quick answer, without using series: sin(4π/5) must be positive since 0 < 4π/5 < π. So C is the only possible choice.

Longer, proper answer:

The first five terms in the series expansion of sin(x) are

sin(x) ≈ x - x ³/3! + x ⁵/5! - x ⁷/7! + x ⁹/9!

Now let x = 4π/5:

sin(4π/5) ≈ 0.5884

so again the answer must be C.

Trigonometric series :  A mathematical series whose terms proceed by sine and cosines of integral multiples of a variable angle.

Option c is correct.

First five term of Trigonometric series of sin is shown below,

   [tex]sin x=x-\frac{x^{3}}{3!}+\frac{x^{5}}{5!}-\frac{x^{7}}{7!}+\frac{x^{9}}{9!}-......[/tex]

substitute x = [tex]\frac{4\pi }{5}[/tex]

  [tex]sin \frac{4\pi }{5}=\frac{4\pi }{5}-\frac{(\frac{4\pi }{5})^{3}}{3!}+\frac{(\frac{4\pi }{5})^{5}}{5!}-\frac{(\frac{4\pi }{5})^{7}}{7!}+\frac{(\frac{4\pi }{5})^{9}}{9!}-......[/tex]

After solving,

We get, approximation value of    [tex]sin\frac{4\pi }{5}=0.5884[/tex]

Now find , actual value

              [tex]sin\frac{4\pi }{5}=0.5878[/tex]

Learn more:

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Ann picked 29 apples. She took a apples to school. Then, she took 13 apples to soccer practice. Now, she has 8 apples left. How many apples did Ann take to school?
Which equation could be used to solve the question below?
A.
29 − a + 13 = 8
B.
29 + a − 13 = 8
C.
29 − a − 13 = 8
D.
29 + a + 13 = 8

Answers

Answer:

C

Step-by-step explanation:

Because each time she kept taking away apples

Answer:  A

The total apples minus the apples she took to school + the apples she took to school, youre looking for the apples she took to school not how many she has left

help for brainless ASAP

Answers

Answer:

I think its H.

Step-by-step explanation:

Answer:

J $52.14

Step-by-step explanation:

Have a Nice Day!

What is the probability of rolling a 3 or 4 on a six sided die?​

Answers

Answer:

2/6

Step-by-step explanation:

if you want to roll a 3 or a 4 and there are 6 possible outcomes then you have a 2 out of a six chance of rolling a 3 or 4

WILL GIVE BRAINLIEST!!


The Browns plan to fly to their vacation spot and then drive
through the mountains. They arranged to rent a sedan for
$37.45 per day with no charge for mileage.
a. What will it cost the Browns to rent the car for 10 days if
they spend $78.00 for gasoline?
b. What will it cost per mile if they drive 590 miles?

Answers

Answer:

A

Step-by-step explanation:

because there's no charge for miles

y = x-2
What is the y-intercept of this line?

Answers

Answer:

I love algebra anyways  

the ans is in the picture with the steps  

(hope it helps can i plz have brainlist :D hehe)

Step-by-step explanation:

solve the system of equations x+y=6 and y+3x=4

Answers

Answer:  x=-1, y=7. 1st eqaution=-1+7=6, 2nd eqaution=7+-3=4

if someone can help me with this I’d really appreciate it!! ( links = report )

Answers

It’s 4

The area of a rhombus is diagonal 1 x diagonal 2 / 2. Since we know the area is 120 and the diagonal 1 is 15 we would divide them and get 8. But then you would do divide 8 by 2 because of the last part of the formula for a rhombus and get 4.

Hope that helps!

Please help quick! I’ll give brainluilyst just please help me

Answers

1. Is 2. Is multiplayer them by each other

Answer quick please!

Answers

Answer:

25%

Step-by-step explanation:

Ed solved a puzzle 3/4 faster than Brett. Brett solved the puzzle in 135 seconds. How long did it take Ed to solve the puzzle.

Answers

Answer:

101.25 seconds.

Step-by-step explanation:

We know that Ed solved the puzzle 3/4 faster than Brett.

Then if Brett solved the puzzle in a time T, Ed solved the puzzle in a time (3/4)*T.

We know that Brett solved the puzzle in 135 seconds, then:

T = 135s

This means that Ed solved the puzzle in:

time = (3/4)*T = (3/4)*135s = 101.25 seconds.

Brian is building a sandbox that is 6 feet wide, 3 feet long, and 15 feet high. How many cubic feet of sand with the box hold?

Answers

Answer:

270 cubic feet

Step-by-step explanation:

3 * 6 * 15 = 270 cubic feet

the answer should be 270, have a great day :)

Katherine's paycheck was $436.14. She put 1/3 of her paycheck into a savings acount and used 1/2 for what was left to pay for her new phone,
How much money does she have remaining from her paycheck?

Answers

Answer:

$145.38

Step-by-step explanation:

436.14-(1/3)(436.14)-(1/2)(436.14) = 145.38

The amount of money that Katherine left after considering all fractions will be $145.38.

What is a fraction?

In such a fraction, the value that appears above the horizontal line is referred to as the numerator.

The denominator of a fraction is the numerical value that comes before the brings together various.

It represents the number of pieces removed from the whole.

As per the given,

Initial amount = $436.14

1/3 of it is = (1/3)436.14 = $145.38

Since, she saved into a saving account so she left with,

$436.14 - $145.38 = $290.76

Now,1/2 of it will be,

(1/2)290.76 = $145.38.

Hence "The amount of money that Katherine left after considering all fractions will be $145.38".

For more about fractions,

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I got the lateral I just need help with the total surface area

Answers

Answer:probably just mutiply all the numbers!

Step-by-step explanation:

find the arc length ​

Answers

Answer:

9.77 units

Step-by-step explanation:

full circle circumference = 2rπ = 2(16)(3.14) = 100.48

(35°/360°)(100.48) = 9.77 units

3. Which ordered pair is the solution to the following system of equations?
y = x + 4
x+y=2

Answers

Answer:

(-1, 3)

Step-by-step explanation:

replace the occurrences of y in the equation

(x + y = 2) with x + 4

x + x + 4 = 2

2x + 4 = 2

solving for x in the first equation

2x = 2 - 4

2x = -2

2x/2 = -2/2

x = -1

replacing all occurrences of x in y = x + 4 with -1

y = (-1) + 4

y = 3

therefore the pairs are (-1, 3)

Hope it helps!

You have 35 yards of ribbon for your gift boxes. Each box gets the same amount of ribbon. How much ribbon will each of your 30 gift boxes get? ←

Answers

1.16 of a yard, don’t know if this is correct but worth a shot
It would be 1.15, I believe

What is an equation of the line that passes through the point (- 2, 7) and is perpendicular to the line x - 4y = 24 ? Pls help

Answers

Answer: y=4x-1

Step-by-step explanation: the line goes through (-2,7) and is perpendicular to the line x-4y =24

Find the area of the figure shown below and choose the appropriate result.

A. 96 mm^2
B. 102 mm^2
C. 90 mm^2
D. 140 mm^2

Answers

Area of rectangle is 9x 10- —-90 mm
Are of triangle is 6x4x1/2—- 12
Together 90+12=102
Answer is B

HELPPPPPP: Simplify - {- [- (-8) ] }

Answers

Answer:

[tex]-8[/tex]

Step-by-step explanation:

Just take away parentheses.

SOS!!! I NEED HELP ASAP!!! PLS PLS PLS PLS PLSSSSSS TYSM TO THOSE WHO HELP ME (I will crown you.) Luv yall

Answers

Answer:

i think its d

Step-by-step explanation:

i might be wrong tho

$10,000 is what percent of $10,000?
Ples help me

Answers

Answer:

100%

Step-by-step explanation:

Answer:

100 percent

Step-by-step explanation:

This is very easy. Try learning it yourself as when you'll grow the stuff you are learning now will be essential to your learning. Your future learning depends on it.

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