i don’t get this can someone help

Answer:

5

Step-by-step explanation:

The expression in one variable b that shows the number of beads on each necklace is (b-20)/4

An expression in one variable is a statement formed by the using constants and an unknown variables and mathematical operators but sign is equal to is not used. Expression in one variable is linear if the power of the unknown variable is equal to one .

Standard form of linear expression in one variable x is  ax +b , where a and b are constants .

Given that Liam has a bag of b beads

He gave 20 beads to his sister

Then, remaining beads = b -20

Remaining beads are used to make 4 necklaces

Let the beads on each necklace be x

Then beads in four necklaces = 4x

As, Remaining beads = beads in four necklaces

⇒4  x = b - 20

Dividing the equation by 4 on both sides

⇒ x = (b-20)/4

∴ The expression that shows the number of beads on each necklace is (b-20)/4

Also, Learn more about the expressions in one variable from the link below:

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Answer:

x=-r-p/q

Step-by-step explanation:

9514 1404 393

Answer:

  see below

Step-by-step explanation:

The y-coordinates of the points are the same, so the distance between those points will be the difference of the x-coordinates. The first number line shows those x-coordinates plotted properly. It can be used to find the difference between them.

Answer:

The greatest common factor is 2x

Answer:

25% of the isles are empty

Step-by-step explanation:

48/12 is 25%

Answer:

25%

Step-by-step explanation:

12 + 12 + 12 + 12= 48

if 12 isles are empty, then that is 1/4 of 48 aka 25%

Answer:

multiplying :v

Step-by-step explanation:

................

Answer: 12, 24, 36, 48, and it just keeps going

Step-by-step explanation:

Answer:

12/24, and 36/48ths.

Step-by-step explanation:

rewrite em

Answer:

The time it will take Jake to hit the water ia approximately 4.46 seconds

Step-by-step explanation:

The given parameters in the question are; feet

The height off the ground, of the diving board from which Jake dives, h₀ = 18 feet

g = The acceleration due to gravity

The maximum height Jake reaches, h = 26 feet

The time Jake takes to reach maximum height = 2 seconds

We have;

h = h₀ + u·t + 1/2·g·t²

v² = u² - 2·g·(h - h₀)

v = u - gt

u = gt

Where;

v = The final velocity

u = The initial velocity

t = The time taken

u = 9.81 × 2 = 19.62 m/s

The vertex form of a quadratic equation is f(x) = a(x - h)² + k², with the vertex = (h, k)

Substituting the values, gives;

26 = 18 + u·t - 1/2 × 9.81 × t²

8 = 19.62·t - 1/2 × 9.81 × t² = 19.62·t - 4.905·t²

19.62·t - 4.905·t² - 8 = 0

Therefore, the standard form is  -4.905·t² + 19.62·t - 8 = 0

The coordinate of the vertex, is (2, 8), the vertex form is therefore;

-4.905(t - 2)² + 8

2) The time it will take Jake to hit the water is given as follows;

The height at which Jake meets the water = -18 feet from initial height

∴ -4.905·t² + 19.62·t - 8 = -18

-4.905·t² + 19.62·t - 8 + 18 = 0

-4.905·t² + 19.62·t + 10 = 0

t² - 4·t - 2.04 = 0

By the quadratic formula, we have;

t = (4 ± √((-4)² - 4 × 1 × -2.04))/(2×1)

t ≈ 4.46 seconds or t ≈ -0.46 seconds

∴ t ≈ 4.46 seconds

The time it will take Jake to hit the water ≈ 4.46 seconds.

Answer:

c would be the answer you are looking for and please mark brainliest

Step-by-step explanation:

Options A and D have functions that are inverses of each other.

The inverse function is defined as a function obtained by reversing the given function.

To check whether two functions are inverses of each other, we need to check if the composition of the functions in both orders results in the input value.

Here, we need to check if f(g(x))=x and g(f(x))=x for all values of x in their domains.

A. f(x) = 7/(x-9) and g(x) = (x+9)/7

f(g(x)) = f((x+9)/7) = 7/((x+9)/7 - 9) = 7/(x/7) = x, so f and g are inverses of each other.

B. f(x) = x/6 + 8 and g(x) = 6x - 8

f(g(x)) = f(6x-8) = (6x-8)/6 + 8 = x/6 + 8/6 = x/6 + 4/3, which is not equal to x. Therefore, f and g are not inverses of each other.

C. f(x) = 2 + ∛x and g(x) = 2 - x³

f(g(x)) = f(2 - x³) = 2 + ∛(2 - x³) ≠ x, so f and g are not inverses of each other.

D. f(x) = 5x - 11 and g(x) = (x+11)/5

f(g(x)) = f((x+11)/5) = 5((x+11)/5) - 11 = x, and g(f(x)) = g(5x-11) = (5x-11+11)/5 = x/5, so f and g are inverses of each other.

Therefore, only options A and D have functions that are inverses of each other.

Learn more about inverse functions here:

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Answer:

D

Step-by-step explanation:

5/5 = 1 so 4 times 1 is  four

Step-by-step explanation:

=

−

±

2

−

4

√

2

x=2a−b±b2−4ac​​

Once in standard form, identify a, b, and c from the original equation and plug them into the quadratic formula.

9

2

−

8

1

=

0

9x^{2}-81=0

9x2−81=0

=

9

a=

a=9

=

0

b={\color{#e8710a}{0}}

b=0

=

−

8

1

c={\color{#129eaf}{-81}}

c=−81

=

−

0

±

0

2

−

4

⋅

9

(

−

8

1

)

√

2

⋅

9

x=2⋅9−0±02−4⋅9(−81)​​

Answer:

x is greater than -4

Step-by-step explanation:

divide both sides by 3

Step-by-step explanation:

.

Answer:

Step-by-step explanation:

Given equation is 2/3 x−12

Given x=18

Putting X=18 in given equation we get

2/3x-12= 2x18/3-12=

=12-12 =0 is the answer

Answer:

x=1/2,-2/3

Step-by-step explanation:

Answer:

- 1/2 I would show my work but its too long sry

Step-by-step explanation:

Answer:

strawberries are 24/42 apples are 2/42 and oranges are 16/42

Step-by-step explanation:

Trust me i did these same exact problems!!!

Also mark me brainly if this helped!!! :)

The fraction for strawberries is 12/21, the fraction for apples is 1/21, and the fraction for oranges is 8/21.

Fraction number consists of two parts, one is the top of the fraction number which is called the numerator and the second is the bottom of the fraction number which is called the denominator.

It is given that:

A platter holds 24 strawberries, 2 apples, and 16 are oranges.

The total number of fruits = 24 + 2 + 16

The total number of fruits = 42

The fraction for strawberries = 24/42 = 12/21

The fraction for apples  = 2/42 = 1/21

The fraction for oranges = 16/42 = 8/21

Thus, the fraction for strawberries is 12/21, the fraction for apples is 1/21, and the fraction for oranges is 8/21.

Learn more about the fraction here:

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9514 1404 393

Answer:

  15

Step-by-step explanation:

The proportion can be written as fractions:

  [tex]\dfrac{20}{40}=\dfrac{d}{30}\\\\\dfrac{600}{40}=d\qquad\text{multiply by 30}\\\\\boxed{d=15}\qquad\text{finish the computation}[/tex]

Answer:

Step-by-step explanation:

Given

proportions. 20 : 40 :: d : 30

20/40=d/30

d=20×30/40

d=30/2

d=15.

Answer:

its A, B, C, or D

Step-by-step explanation:

Answer:

im stuck

Step-by-step explanation:

A. Quadrant I

B. Quadrant I

C. Quadrant II

D. Quadrant III

Answer:

pentagon

Step-by-step explanation:

got 5 sides

Answer:

94.917

Step-by-step explanation:

6834/72 = 94.916666

Answer:

13,500

Step-by-step explanation:

Answer: 13,500

Step-by-step explanation:

So the 4 is in the hundred place than u look to the right where the next digit is which is 8. If its 5 or more u round up but if its 5 or less it stays the same. So 8 is 5 or more than u round up the 4 to 5 and leave the rest of the digit 0's. but u leave the 13 the same. If that makes sense.

Answer:

False, they take form of a U shape

Answer:

Step-by-step explanation:

C=2

Answer:

Step-by-step explanation:

Answer:

C

Step-by-step explanation:

the answer is C !!!!!!!!!!!!!!!

Answer:

11 in = 33 in.

Step-by-step explanation:

6 in. = 18 in.

the second triangle is 3 times bigger than the smaller one.

Answer:

no solution or the empty set

Step-by-step explanation:

3(x-2)+1≥x+2(X+2)

3x -6+1≥x+2x+4               distribute

3x-5≥3x+4

0≥9                                not a true statement, no solution