write an equivalent expression for 55+15n.​

Answer:

c

Step-by-step explanation:

hope it helps if not sorry <3

[tex]\frac{324-7.9}{\sqrt{46-5.832}}[/tex]

= 49.87517031

Answer:

B=1.75

Step-by-step explanation:

Answer:

C, D

Step-by-step explanation:

not really much to explain except 169 and 4 are perfect squares

Answer:

carbondioxide + oxygen

Answer:

carbon dioxide + oxygen → water + sugar + sunlight

Step-by-step explanation:

hope i helped

Answer:

wut

Step-by-step explanation:

Answer:

1

6p+2

3 p + 1

2

6p+2

3p + 1

3

Step-by-step explanation:

mark brainliest please

Answer:

A

Step-by-step explanation:

Answer:243

Step-by-step explanation:

Answer:

The expected number of markers that have the same color cap and marker is 3.

Step-by-step explanation:

Every marker has a [tex]\frac{1}{3}[/tex] chance to get the same color cap, because there are always 3 same caps, and 9 total caps. By linearity of expectation, the expected number of markers that have the same color cap and marker is equal to the sum of all marker's individual 'contribution' to the same color cap count. So the expected value is [tex]9 \cdot \frac{1}{3} = 3[/tex], precisely what we were after.

Answer:

3

Step-by-step explanation:

By running the following Python code, we can safely assume the answer to be 3:

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

import random

def cap_throw():

   cap_list = ['R', 'R', 'R', 'G', 'G', 'G', 'B', 'B', 'B']

   random_cap_list = cap_list[:]

   random.shuffle(random_cap_list)

   counter = 0

   for i in range(len((cap_list))):

       if cap_list[i] == random_cap_list[i]:

           counter += 1

   return counter

results_list = []

for i in range(10 ** 6):

   results_list.append(cap_throw())

print(sum(results_list) / len(results_list))

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

Which gave 2.998795.

Answer:

i. x² + 7x - 16800 = 0 ii. x = 126.16 km/h or -133.16 km/h iii. 5.01 h

Step-by-step explanation:

i. If he drove at an average speed of x km/h on his journey from City P to City Q formulate an equation in x and show that it reduces to x2 + 7x – 16 800 = 0.

For the first journey from City P to City Q, with Mr Lee moving at an average speed of x km/h, he reaches there in time, t and covers the distance, d = 600 km

So, xt = 600 (1)

On his return journey from City Q to CIty P, his average speed increases by 7 km/h, so it is (x + 7)km/h and his time is 15 minutes less than his first journey. 15 min = 15/60 h = 0.25 h, we have that his time for the journey is (t - 0.25) h. Since the distance covered is the same d = 600 km,

We have (x + 7)(t - 0.25) = 600  (2)

Expanding the brackets, we have

xt - 0.25x + 7t - 0.25(7) = 600

xt - 0.25x + 7t - 1.75 = 600

From (1) t = 600/x and xt = 600

Substituting these into the equation, we have

600 - 0.25x + 7(600/x) - 1.75 = 600

simplifying

-0.25x + 4200/x - 1.75 = 600 - 600

-0.25x + 4200/x - 1.75 = 0

multiplying through by x, we have

-0.25x² + 4200 - 1.75x = 0

dividing through by -0.25, we have

-0.25x²/-0.25 + 4200/-0.25 - 1.75x/-0.25 = 0

x² - 16800 + 7x = 0

re-arranging, we have

x² + 7x - 16800 = 0

ii. Solve the equation x² + 7x - 16 800 = 0, giving both your answers correct to  2 decimal places.

Using the quadratic formula, we solve x² + 7x - 16800 = 0 for x

So, [tex]x = \frac{-7 +/-\sqrt{7^{2} - 4 X 1 X -16800} }{2 X 1}\\x = \frac{-7 +/-\sqrt{49 + 67200} }{2} \\x = \frac{-7 +/-\sqrt{67249} }{2} \\x = \frac{-7 +/- 259.32}{2} \\x = \frac{-7 + 259.32}{2} or x = \frac{-7 - 259.32}{2} \\x = 252.32/2 or x= -266.32/2\\x = 126.16 km/hor x = -133.16 km/h[/tex]

So, x = 126.16 km/h or -133.16 km/h

iii. Find the time taken for the return journey

The time taken for the return journey is t' = t + 0.25. Now. t = 600/x

Since x cannot be negative, we use x = 126.16 km/h.

So, t = 600/x = 600/126.16 = 4.76 h

t' = t + 0.25

t' = 4.76 + 0.25

t' = 5.01 h

Answer:

x = 4

y = 3

Step-by-step explanation:

Remark

If a triangle is equilateral all three sides are equal. So each side has equal statements.

Solution

3x + 2 = 5x - 2y            Subtract 3x from both sides

2 = 5x -3x - 2y              Combine

2 = 2x - 2y                     divide by 2

x - y = 1                          Equation 1

3x + 2 = 6y - 4            Equilateral triangles have equal sides. Subtract 6y

3x - 6y + 2=  - 4          Subtract 2

3x - 6y = -4 - 2

3x - 6y = - 6                Divide by 3

x - 2y = - 2                  Equation 2.

Now subtract equation 1 from equation 2

x - 2y = - 2

x -  y    =  1                    Subtract

  - y    = - 3                   Multiply by -2

    y = 3

Put y = 3 into equation 1

x - y = 1

x - 3 = 1                         Add 3 to both sides.

x = 4

Answer

x = 4

y = 3

Number 1 answer :

Cream cheese = 12    Sugar= 15    12 divided by 15 = 0.8

There are 0.8 ounces of cream cheese for every ounce of sugar.

Number 2 answer:

 Sugar= 15   Cream cheese = 12   15 divided by 12 = 1.25

There are 1.25 ounces of sugar for every ounce of cream cheese.

Answer:

m=2/5, y=3x7, (7,0), y=x-2, (0,-2)

Step-by-step explanation:

Answer:

Answer is v=182

Step-by-step explanation:

v=volume of the glass

v/2+65=6v/7

Multiply by 14

7V+910=12V

910=5V

V=182

I hope it's helpful!

Answer:

The answer is D

Step-by-step explanation:

If you add them all, and divide them it wouldn’t get 14.5

Answer:

No, the mean should be higher.

Step-by-step explanation:

Have a good day :)

The measure of each marked angle is 60 degrees for the given figure, which are alternate exterior angles.

The angles are given as:

∠1 = 10x-20 and ∠2 = 7x+4

As we know that alternate exterior angles are described as the pair of angles formed on the outer side of the parallel lines and on opposite sides of the transversal when two parallel lines are crossed by a transversal.

By alternate exterior angles, it can be written as:

∠1 = ∠2

10x-20 = 7x+4

10x -7x = 4 + 20

3x = 24

x = 24/3

x = 3

From given angles:

80 - 20 = 60

56 + 4 = 60

Thus, the measure of each marked angle is 60 degrees.

Learn more about alternate exterior angles here:

https://brainly.com/question/23134598

#SPJ6

Answer:

Step-by-step explanation:

a=1

b=-2

c=1.5

d=-20

Answer:

The x-intercepts of the function are 0 and 6, which are a lower bound and an upper bound for the possible values of the width of the storage bin.

Step-by-step explanation:

Given

[tex]A(x) = x^2 - 6x[/tex]

Required

Which is true about the x intercept

To do this, we make A(x) = 0.

Substitute 0 for A(x) in [tex]A(x) = x^2 - 6x[/tex]

[tex]0 = x^2 - 6x[/tex]

Rewrite as:

[tex]x^2 - 6x=0[/tex]

Factorize:

[tex]x(x - 6)=0[/tex]

Split:

[tex]x = 0\ or\ x - 6 = 0[/tex]

[tex]x = 0\ or\ x = 6[/tex]

Option D is correct

Answer:

49

Step-by-step explanation:

The computation of the total amount is shown below:

Let us assume the natasha be 4x

And, the krutika be 3x

Now as per the situation

4x = 3x + £7

x = £7

For natasha = 4(7) = 28

For krutika = 3(7) = 21

So, the total amount is

= 28 + 21

= 49

Answer:

3!!!

Step-by-step explanation:

|2(-6)+5| - 8((1)/(2))

hope this helped ahahaa <3

Answer:

6.58 miles per hour

Step-by-step explanation:

Let the mass and speed be represented by m and s respectively. So that,

m [tex]\alpha[/tex] [tex]s^{5}[/tex]

m = k[tex]s^{5}[/tex]

where k is the constant of proportionality.

For a certain river, speed = 4 miles per hour.

m = k [tex](4)^{5}[/tex]

m = 1024k ............ 1

In order to transport particles that are 12 times as massive as usual;

12m = k[tex]s^{5}[/tex]

m = [tex]\frac{ks^{5} }{12}[/tex] ............. 2

Thus,

[tex]\frac{ks^{5} }{12}[/tex] = 1024 k

[tex]s^{5}[/tex] = 12 x 1024

   = 12288

[tex]s^{5}[/tex] 12288

s = [tex]\sqrt[5]{12288}[/tex]

  = 6.5750

s = 6.58 miles per hour

Therefore, its speed must be approximately 6.58 miles per hour.

Answer:

A. Weeks

B. Fingernail growth

C. 1, 2, 3, 4 (weeks)

D. 0.7, 1.4, 2.1, 2.8 (mm)

Step-by-step explanation:

ez

Answer:

k = [tex]\frac{y}{x}[/tex]

Step-by-step explanation:

y = kx

Divide by x on both sides to isolate k

k = [tex]\frac{y}{x}[/tex]

Answer/Step-by-step explanation:

Problem 1:

✔️Type of angle = right angle

✔️Equation: (x + 4) + (3x + 2) = 90°

✔️value of x:

x + 4 + 3x + 2 = 90

Add like terms

4x + 6 = 90

4x = 90 - 6

4x = 84

x = 84/4

x = 21

✔️Angle 1 (x + 4):

Plug in the value of x

Angle 1 = 21 + 4 = 25°

✔️Angle 2 (3x + 2):

Angle 2 = 3(21) + 2 = 63 + 2 = 65°

Problem 2:

✔️Type of angle = right angle

✔️Equation: x + 2x = 90°

✔️value of x:

x + 2x = 90

Add like terms

3x = 90

x = 90/3

x = 30

✔️Angle 1 (x):

Angle 1 = x = 30°

✔️Angle 2 (2x):

Angle 2 = 2(30) = 60°

Problem 3:

✔️Type of angle = right angle

✔️Equation: (3x + 6) + 4x = 90°

✔️value of x:

3x + 6 + 4x = 90

Add like terms

7x + 6 = 90

7x = 90 - 6

7x = 84

x = 84/7

x = 12

✔️Angle 1 (3x + 6):

Plug in the value of x

Angle 1 = 3(12) + 6 = 42°

✔️Angle 2 (4x):

Angle 2 = 4(12) = 48°

Answer:

$4,675

Step-by-step explanation:

The commission is 5.5% of $85,000.

5.5% * $85,000 =

= 0.055 * $85,000

= $4,675

Answer:

$4675

Step-by-step explanation:

85,000 x .055 = 4,675

Hope that helps!

Answer:

$36

Step-by-step explanation:

54/9=6

6*6=36

$36