are b, c and k co-planar??!

Answer:

21^3

Step-by-step explanation:

Volume = length x width x height

since the shape is a cube, volume = 21 x 21 x 21 = 21^3

Answer:

D

Step-by-step explanation:

Just trying to help??

The statement which is true is; The equation 3.5|6x – 2| =3.5 has one solution.

A one-variable linear equation can only be concluded to have no solution if upon evaluation, the value of the variable cannot be computed due to the fact that the variable diminishes in the process of solving.

Read more on no solution equations;

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Answer:

-2

Step-by-step explanation:

write the problem using numbers

-6 + 7x = -20

rearrange

7x - 6 = -20

solve using inverse operations

7x - 6 = -20

+6        + 6

7x = -14

/7      /7

x = -2

Answer:

d

Step-by-step explanation:

Answer:

677.5

Step-by-step explanation:

811.8-134.3 is 677.5

Answer:

567.5 ounces

Step-by-step explanation:

811.8

-134.3

--------------

567.5

Answer:

why do we need to hurry?

Step-by-step explanation:

Answer:16x2+9

Step-by-step explanation:

Answer:

- 6

Step-by-step explanation:

Step 1:

x ÷ 3 - 5 = - 7   Equation

Step 2:

x ÷ 3 = - 2   Add 5 on both sides

Answer:

x = - 6   Multiply 3 on both sides

Hope This Helps :)

Answer:

First term: 4x

"Middle" term: -8

Step-by-step explanation:

2(2x-4) is the same thing as 4x-8.

Answer:

3/9 is 1/3 because if you simply by 3, it will be 1/3 of 9

Answer:

12x³ - 8x² - 54x - 36

Step-by-step explanation:

The polynomial is the product of the factors, that is

(- 4x - 6)(- 3x² + 5x + 6)

Each term in the second factor is multiplied by each term in the first factor, that is

- 4x(- 3x² + 5x + 6) - 6(- 3x² + 5x + 6) ← distribute both parenthesis

= 12x³ - 20x² - 24x + 18x² - 30x - 36 ← collect like terms

= 12x³ - 8x² - 54x - 36

Answer:

22 and 1/2

Explanation: 1/5(n-10)=6- 7/2

1/5(n-10)= 6(2)/2- 7/2

1/5(n-10)= 6(2)-7/2- 7/2

1/5(n-10)= 5/2

Multiply both sides by 5

n-10=25/2

Add 10 to both sides

45/2

Turn into a proper fraction which is 22 and 1/2

An expression is a sentence with a minimum of two numbers or variables and at least one math operation such as addition, subtraction, multiplication, or division.

The value of n in the expression 1/5(n-10)=6-3 1/2 is 22.5.

An expression is a sentence with a minimum of two numbers or variables and at least one math operation such as addition, subtraction, multiplication, or division.

We have,

1/5 ( n - 10 ) = 6  - 3 1/2

1/5 ( n - 10 ) = 6 - 7/2

1/5 ( n - 10 ) = ( 12 - 7 ) / 2

1/5 ( n - 10 ) = 5 / 2

Multiplying by 5 on both sides.

n - 10 = 25 / 2

Adding 10 on both sides

n = 25 / 2 + 10

n = ( 25 + 20 ) / 2

n = 45 / 2

n = 22.5

Thus the value of n in the expression 1/5 ( n - 10 ) = 6 - 3 1/2 is 22.5.

Learn more about expressions here:

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Answer:

x < 50

Step-by-step explanation:

No more means that it cannot equal 50. Therefore we can remove the 1st two options.

We now have the 3rd option and 4th option to choose from.

The 4th option is incorrect because the inequality is saying that a number is greater than 50.

∴ x < 50 is our answer.

Answer:

1/3

Step-by-step explanation:

There is a total of 12 possible different outcomes.

The outcomes that are heads and a number greater than 2 are: H3, H4, H5, H6.

There are 4 outcomes that are heads and a number greater than 2.

p(heads & number greater than 2) = 4/12 = 1/3

Answer: 1/3

Answer:

The answer is 30%

Answer:

Step-by-step explanation:

Let the number be n

Then

Answer:

1/2n - 12

Step-by-step explanation:

Half a number: 1/2n

Decreased by 12: - 12

Put together: 1/2n - 12

Best of Luck!

Answer:

It could be any fraction such as -1/2, -4/5,-20/50, -1/3, -5/11 ...

As long as the fraction is larger than -1 but smaller than 0 it will work

Step-by-step explanation:

Answer: C

Step-by-step explanation:

The equation represents an exponential function with an initial value of 500 is, [tex]\rm f(x) = 500(2)^x[/tex].

We have to determine, which equation represents an exponential function with an initial value of 500?

According to the question,

An exponential function formula can be defined by,

[tex]\rm f(x) = ab^x[/tex]

Where the input variable is denoted as x occurs as an exponent.

And b is the growth value or decay constant.

The exponential curve depends on the exponential function and it depends on the value of the x.

Therefore,

The equation represents an exponential function with an initial value of 500,

[tex]\rm f(x) = 500(2)^x[/tex]

Where the input variable is denoted as x occurs as an exponent.

And b is 2 the growth value or decay constant.

Hence, The required equation represents an exponential function with an initial value of 500 is, [tex]\rm f(x) = 500(2)^x[/tex].

For more details refer to the link given below.

https://brainly.com/question/15918951

Answer:

x= square root of 2x-1

Step-by-step explanation:

First you move the 3 to the right side of the equation and since it was multiplied; you have to divide it making it 2x-1.

Then, you have to square it so you can get x by itself and since 2x and -1 do not have a square root you just leave it.

Answer:

1 1/5

Step-by-step explanation:

3/5 + 3/5 = 6/5 = 5/5 + 1/5 = 1 1/5

Answer:

y = 21

x = 48

Step-by-step explanation:

for y:

5y - 17 + 2y + 50 = 180

add like terms

7y + 33 = 180

subtract 33 from 180

7y = 147

divide 7 from 147

y = 21

for x:

x + 44 + 7x -248

add like terms

8x - 204 = 180

add 204 to 180

8x = 384

divide 8 from 384

x = 48

now plug it in to find angle measurements:

for y:

5 (21) - 17 = 88°

7 (48) - 248 = 88°

for x:

2 (21) + 50 = 92°

48 + 44 = 92°

I hope this helps!❤

Answer:

Im pretty sure A

Step-by-step explanation:

multiply both sides by 3/4 (reciprocal)

3/4X=pie(r)cubed

divide by pi on both sides

3/4X

-------- = r(cubed)

pi

cube root both sides

Answer:

The correct option is;

The domain, r is equivalent to W = {0, 1, 2, 3,...}

Step-by-step explanation:

The cost for each cup of tea sold by the restaurant = $1.50

The cost per tea refill = $0.50

The amount of tea the restaurant brews = 4 refills per customer

The cost of r tea refills C(r) is given as follows;

C(r) = 0.5·r + 1.5

The domain is the set of all whole, W, numbers or the set of all natural numbers including 0

r = W = {0, 1, 2, 3,...}.

Answer: The domain, r is equivalent to W = {0, 1, 2, 3,...}

Step-by-step explanation:

Answer: I think its -8

Step-by-step explanation: all you do I'd divide

Answer:

x=[tex]\frac{abc}{(bc+ac+ab)}[/tex]

Step-by-step explanation:

First, we need to remove the fractions on the left hand side, which we can do by multiplying each term by the lowest common multiple of the denominators. Since the denominators are all different (a,b and c), then the lowest common multiple is just all three multiplied together: abc

So, our original equation:

[tex]\frac{1}{a}+\frac{1}{b}+\frac{1}{c}=\frac{1}{x}[/tex] now becomes:

[tex]\frac{abc}{a}+\frac{abc}{b}+\frac{abc}{c}=\frac{abc}{x}[/tex]

Now we can simplify the fractions on the right hand side because each numerator can now be divided by its denominator:

[tex]bc+ac+ab=\frac{abc}{x}[/tex]

Now we can just rearrange the equation to solve for x by replacing the x with (bc+ac+ab), because if abc/x= bc+ac+ab, then abc/bc+ac+ab=x, as x and bc+ac+ab multiply to abc:

[tex]x(bc+ac+ab)=abc[/tex]

[tex]x=\frac{abc}{bc+ac+ab}[/tex]

Hope this helped!

Answer:

"2.660503478" would be the right answers to the key statement.

Step-by-step explanation:

Drawing 5 balls out of 69 can be done in ([tex]\frac{69}{5}[/tex])

=  [tex]\frac{69\times 68\times 67\times 66\times 65}{5!}[/tex]

Drawing 1 ball out of 26 red balls can be done in ([tex]\frac{26}{1}[/tex])

= [tex]26[/tex]

Then the chance of drawing 5 out of 69 balls including 1 out of 26 red balls and then both matching the jackpot  

= [tex]\frac{1}{11238513\times 26}[/tex]

= [tex]\frac{1}{292201338}[/tex]

Since the sum of the jackpot is $193-106 and then one ticket costs $2, the estimated value of buying one ticket again for jackpot is $2.

= [tex]\frac{1}{292201338}\times 193\times 10^6+\frac{292201338-1}{292201338}\times 2[/tex]

= [tex]2.660503478[/tex]

Step-by-step explanation:

The upstream speed is S / t₁, and the downstream speed is S / t₂.

If we say f is the speed of the fish in calm water, and r is the speed of the river, then:

f − r = S / t₁

f + r = S / t₂

If we say T is the time it takes to cross the river, then the speed perpendicular to the river is ℓ/T, the speed parallel to the river is r, and the overall speed is f.

Using Pythagorean theorem:

f² = (ℓ/T)² + r²

f² − r² = (ℓ/T)²

(f − r) (f + r) = (ℓ/T)²

(S / t₁) (S / t₂) = (ℓ/T)²

S² / (t₁ t₂) = (ℓ/T)²

(t₁ t₂) / S² = (T/ℓ)²

√(t₁ t₂) / S = T/ℓ

T = ℓ√(t₁ t₂) / S