Which of the following equations has the solution set {0}?





A.) -14m - 7m + 1 = -7m + 1


B.) -14m + 7m + 1 = -7m + 2


C.) 14m - 7m - 1 = -7m + 1

Answer: length = 27 cm

Step-by-step explanation:

Perimeter = 2(l + w)

86 = 2(l + 16)

86 = 2l + 32

86 - 32 = 2l

l = 54/2 = 27 cm.

Answer:

10

Step-by-step explanation:

i have no flipping i think im wrong

Answer:

753.6 cm³

21.825 cm

34.742 cm

Step-by-step explanation:

1) V=πr²h

r= 4 cm, h= 15 cm

V= 3.14*4²*15= 753.6 cm³

2) V=πr²h

r= 3.4 cm, V= 233 cm³, h=?

h= V/πr²= 233/(3.14*3.4)= 21.825 cm

3)  A=2πrh (not including base surface as it is open ended)

r= 11 cm, A= 1200 cm², h=?

h= A/(2πr)= 1200/(3.14*11)= 34.742 cm

Answer:

x = 14

Step-by-step explanation:

Tan 25 = [tex]\frac{opposite}{adjacent}[/tex]

Where opposite = x, Adjacent = 30 m

=> 0.466 x 30 = x

=> x = 14

Answer:

[tex]\Huge \boxed{\mathrm{14 \ meters}}[/tex]

Step-by-step explanation:

We can use trigonometric functions to solve for the problem.

[tex]\displaystyle \sf tan( \theta )=\frac{opposite \ side}{adjacent \ side}[/tex]

Plug in the values and evaluate.

[tex]\displaystyle \sf tan( 25\° )=\frac{x}{30}[/tex]

Multiply both sides by 30.

[tex]\displaystyle \sf 30 \cdot tan( 25\° )=x[/tex]

[tex]\sf x=13.98922974...[/tex]

The height of the traffic light is 14 meters (rounded to nearest whole number).

Answer:

20 red sweets

Step-by-step explanation:

do two thirds of 30 and the part that cane out is the red sweets

Answer:

12

Step-by-step explanation:

Sum the parts of the ratio, 2 + 3 = 5 parts

Divide the number of sweets by 5 to find the value of one part of the ratio

30 ÷ 5 = 6 sweets ← value of 1 part of the ratio, thus

2 × 6 = 12 ← number of red sweets

Answer:

[tex]a = \frac{2(vt-d)}{t^{2} }[/tex]

Step-by-step explanation:

Given the formula for calculating the displacement of a body as shown below;

[tex]d = vt - \frac{1}{2} at^{2}[/tex]

d = displacement

v = final velocity

a = acceleration

t = time

To make the acceleration a the subject of the formula, the followin steps must be taken;

Step 1: Subtract vt from both sides of the equation

[tex]d-vt = vt-vt-\frac{1}{2}at^{2} \\ d-vt = -\frac{1}{2}at^{2}\\2(d-vt) = -at^{2}[/tex]

Step 2: Divide both sides by t²

[tex]\frac{2(d-vt)}{t^{2} } = \frac{-at^{2} }{t^{2} } \\a = \frac{-2(d-vt)}{t^{2} }[/tex]

[tex]a = \frac{2(vt-d)}{t^{2} }[/tex]

Step-by-step explanation:

9x + 1

This is the correct answer

Answer: yes

Step-by-step explanation:

Answer: not exactly

Step-by-step explanation:

If you put a negative number in a square root you would end up with an error on the calculator. Thats because you end up with an imaginary number since a negative inside a square root can never be calculated, its simply not possible because in order for a negative number to form, a positive number must always be multiplied to a negative number. So people came up with the concept of i:

[tex]\sqrt{-1}[/tex] = i

So something like [tex]\sqrt{-4}[/tex] can be simplified like:

[tex]\sqrt{4}[/tex] * [tex]\sqrt{-1}[/tex]

 2 * i

  2i

But if you're talking about squares like exponent wise, then yes

something like [tex](-2)^{2}[/tex] will always be positive, but you have to be careful with the parentheses.

There is a difference btw [tex](-2)^{2}[/tex] and[tex]-2^{2}[/tex]

[tex](-2)^{2}[/tex] = 4 because you are multiplying (-2)(-2)

but

[tex]-2^{2}[/tex] = -4 because you are multiplying -(2)(2)

Answer:

t2 = 52.8 hours

it will take 52.8 hours if its flow is reduced to 5 litres per minute.

Step-by-step explanation:

The volume of the swimming pool can be written as;

Volume V = flow rate × time

V = R×t

V = R1×t1 = R2×t2

R1×t1 = R2×t2

t2 = R1×t1/R2 ........1

Given;

Flow rate R1 = 12 litres per minute

Flow rate R2 = 5 litres per minute

time t1 = 22 hours

Substituting the given values into equation 1;

t2 = R1×t1/R2 = 12×22/5

t2 = 52.8 hours

it will take 52.8 hours if its flow is reduced to 5 litres per minute.

Answer:

900 L

Step-by-step explanation:

after 10 hours : 10*10=100 liters

1000-100=900 liter

is the answer I recived

My work is below:

Next after 10 hours (10*10=100 liters )

1000-100=900 liter

Hope this helps you learn what to do in similar probles

If you like this question please mark brainest  

Answer:

6 and 4

Step-by-step explanation:

Answer:

The width of the garden is 99 feet.

Step-by-step explanation:

Given: The perimeter is 306 ft.

Given: the length of the garden is 99 ft.

Step 1: Because the garden is rectangular and so 2 of its sides are the lengths, we must multiply 99 by 2. 99x2=108.

Step 2: To find out the 2 remaining sides of the garden (the widths), we must subtract the perimeter by the lengths. 306-108=198.

Step 3: Because there are 2 sides which are the widths, we know that they are each equal and add up to 198. To find out how long the width is, we must divide the 2 widths by 2. 198/2=99.

So, the width of the garden is 99 feet.

Answer:

About 50 times

Step-by-step explanation:

can I have a thx, 5 star, brainliest and will you let me know if right?

Answer:

y=x_1 is the solution of system

Answer:

B. (1, 4)

Step-by-step explanation:

2x + 3y = 14

5x - 4y = -11

Multiply the first equation by -5 and the second by 2:

-10x - 15y = -70

10x - 8y = -22       Add these 2 equations:

0   - 23y = -92

y = -92/-23 = 4

Now substitute y = 4 in the first equation:

2x + 3*4 = 14

2x = 14 - 12

2x = 2

x = 1.

Answer:

[tex]solution \\ cost \: of \: 25 \: ticket = 50 \\ cost \: of \: one \: ticket = \frac{50}{25} \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = 2[/tex]

hope this helps..

Good luck on your assignment

25 tickets cost 50.00 dollars.

The cost of 1 ticket would be:

50/25=2

2.00 dollars to be precise.

Answer:

The answer should be C

Step-by-step explanation:

Because if you do a reflection over the y-axis you would get the same thing

Answer:

[tex]12x^3+28x^2-75x-175[/tex]

Step-by-step explanation:

[tex](2x + 5)(2x - 5)(3x + 7)[/tex]

[tex][2x(2x)+2x(-5)+5(2x)+5(-5)](3x+7)[/tex]

[tex][4x^2+-10x+10x+-25](3x+7)[/tex]

[tex][4x^2+0+-25](3x+7)[/tex]

[tex](4x^2-25)(3x+7)[/tex]

[tex]4x^2(3x)+4x^2(7)-25(3x)-25(7)[/tex]

[tex]12x^3+28x^2-75x-175[/tex]

Answer:

[tex]\mathrm{A}[/tex]

Step-by-step explanation:

Let that number be x.

[tex]1/8x=2+1/4x[/tex]

[tex]1/8x-1/4x=2[/tex]

[tex]-1/8x=2[/tex]

[tex]x=2 \times -8/1[/tex]

[tex]x=-16[/tex]

Answer:

A. -16.

Step-by-step explanation:

1/8 x = 1/4 x + 2  where x is the number to be found.

Subtract 1/4 x for both sides of the equation:

-1/8x = 2

x = 2*-8

x = -16

Answer:

100

Step-by-step explanation:

138 is closer to 100 than 200, so the 100 is the correct answer.

Answer:

100

Step-by-step explanation:

150 and higher would round up to 200

so 149 and lower rounds back to 100

Answer:

1953125

Step-by-step explanation:

Step 1: Simplify

(5x5x5) x (5x5x5x5x5x5) = [tex]5^3(5^6)[/tex]

Step 2: Combine exponents

[tex]5^3(5^6)[/tex] = [tex]5^9[/tex]

Step 3: Evaluate

[tex]5^9[/tex] = 1953125

Answer:

15750

Step-by-step explanation:

First you calculate the first bracket (it is equal to 125), then you calculate the second bracket (it is equal to 15625), and then you multiply the 2 numbers.

Answer:

Do it your self

Step-by-step explanation:

Answer:

Step-by-step explanation:

Let's solve this using our formula for exponential functions:

[tex]y=a(b)^x[/tex] where a is the initial value and b is the growth/decay rate. We will fill that equation in with 2 of the coordinates on the graph and come up with the values for both a and b. (0, 3) and (1, 6):

[tex]3=a(b)^0[/tex]. Anything raised to the power of 0 is 1, so that means that

a = 3. We will use that value along with the x and y from the second coordinate to solve for b:

[tex]6=3(b)^1[/tex]. b to the first is just b, so our equation is

6 = 3b and

b = 2.

Our equation then is

[tex]y=3(2)^x[/tex], the third choice down.

The exponential value function is y = 3 ( 2 )ˣ

The exponential growth or decay formula is given by

x ( t ) = x₀ × ( 1 + r )ⁿ

x ( t ) is the value at time t

x₀ is the initial value at time t = 0.

r is the growth rate when r>0 or decay rate when r<0, in percent

t is the time in discrete intervals and selected time units

Given data ,

Let the exponential function be represented as A

Now , the value of A is

y = 3 ( 2 )ˣ

when x = 0

y = 3 ( 2 )⁰

y = 3

when x = 1

y = 3 ( 2 )

y = 6

So , the points on the graph are ( 0 , 3 ) and ( 1 , 6 )

Hence , the function is y = 3 ( 2 )ˣ

To learn more about exponential growth factor click :

https://brainly.com/question/13674608

#SPJ7

Answer:

Irrational

Step-by-step explanation:

root of 5 = 2.23606797749978969640917366873127623544061835961152572427089…

This number never ends. Another term for it would be a recurring decimal, but it is not exact. Anyway, the square root of 5 is irrational since it is not defined to stop. Even if it was rounded, it would not be exact.

Hope this Helps.

Answer:

r=4

Step-by-step explanation:

Answer:

r = 4

Step-by-step explanation:

3r+8=2r+12

Subtract 2r from each side

3r-2r+8=2r-2r+12

r+8 = 12

Subtract 8 from each side

r +8-8 = 12-8

r = 4

Answer:

3/20

Step-by-step explanation:

5 green marbles,3 red marbles and 2 blue marbles from the bowl = 10 marbles

P( green) = green/total = 5/10 = 1/2

Replace

5 green marbles,3 red marbles and 2 blue marbles from the bowl = 10 marbles

P( red) = red/total = 3/10

P(green,replace, red) = 1/2 * 3/10 = 3/20

Answer:

Step-by-step explanation:

To find 5e. El change, find the difference between week 1 and 1.

56.92-(-16.54) = 56.92+16.54 = -73.46.

Note: this is negative, because we are calculating the difference.

Hope this helps

Answer:

∛50 cm, 2∛50 cm, 3∛50 cm

Step-by-step explanation:

V= wlh

V=300 cm³

w= 1/3l

h= 2/3l

---------

Answer:

Length is 11.052cm

Width is 3.684cm

Height is 7.386cm

Step-by-step explanation:

Let length be x, width y and height Z

Width (y) = X/3 , height (z) = 2x /3

volume =xyz

volume = x(x/3)(2/3)x

Volume = (2/9)x³

But Volume =300

300= (2/9)x³

300/(2/9) = x³ (make x³ the subject to find x )

1350 = x³

x=3√(1350)

x=11.052cm

Length is 11.052cm

Width = x/3 =11.052 /3

= 3.684cm

Height = 2x/3 = 2(11.052) /3

= 7.368cm

You can check it by multiplying LWH to see if you get 300 (the volume)

Answer:

Selling price of 5 gives the maximum profit

Step-by-step explanation:

What we do here is to find the first derivative, since at maximum points, the profit will be set to zero.

Mathematically, we have;

dp/dx = -120x + 600

We now equate this to zero

0 = -120x + 600

120x = 600

x = 600/120

x = 5