HELP ASAP DUE TONIGHT

Answer:

N = 7.5 pounds

Step-by-step explanation:

Formula for the radioactive decay is given by,

[tex]N=N_0e^{-\lambda t}[/tex]

Here, N = Final amount

N₀ = Initial amount

λ = Decay constant

t = Duration of decay

Now we can substitute the values from the given question,

N = [tex]15e^{-(0.0231\times 30)}[/tex]

N = [tex]15e^{-0.693}[/tex]

N = 15(0.5)

N = 7.5 pounds

Answer:

135 degrees

Step-by-step explanation:

all the angles in a triangle need to add to 180 degrees, so you take

180-(65+70)= 45

Then you just find the supplementary angle

45+x=180

x=135

Answer:

P

K

P

K

P

K

Step-by-step explanation:

If it's not moving, it's potential energy

If it's moving, it's kinetic energy

Answer:

8^6

Step-by-step explanation:

This just means that 8 is being multiplied by itself 6 times

The value of x for the given equation is [tex]\dfrac{13}{5}[/tex]

Linear equation in one variable refers to an equation that can be rearranged in the form [tex]\rm ax + b = c[/tex], where [tex]\rm a \neq 0[/tex]b and c are integers. The equation is solved to determine the value of [tex]\rm x\\[/tex].

Calculations:

[tex]\begin{aligned} 5(5\rm x -10) &= 15\\\\5\rm x - 10 &= \dfrac{15}{5} \\\\5\rm x - 10&= 3\\\\5\rm x &= 3 + 10\\\\5\rm x &= 13\\\\\rm x& = \dfrac{13}{5} \end[/tex]

Therefore, the solution of the equation [tex]5(5\rm x - 10) = 15[/tex] is [tex]\dfrac{13}{5}[/tex].

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Answer:

B only if

Step-by-step explanation:

If b is 5y=-2x+3

Then its b

Because the slope to be perpendicular it would be -2/5

Answer:

The change was 5.75%, hope that helped.

Step-by-step explanation:

Answer: Value of n is -6

Step-by-step explanation:

If the function f(x) is translated k units up, then its image is g(x) = f(x) + k

If the function f(x) is translated k units down, then its image is g(x) = f(x) - k

The vertex form of the quadratic function is f(x) = a(x - h)² + k, where a is the coefficient of x² and (h, k) is the vertex

The value of n is 1 when the expression k(x) = x² and p(x) = k(x) + n.

An expression contains one or more terms with addition, subtraction, multiplication, and division.

We always combine the like terms in an expression when we simplify.

We also keep all the like terms on one side of the expression if we are dealing with two sides of an expression.

Example:

1 + 3x + 4y = 7 is an expression.

3 + 4 is an expression.

2 x 4 + 6 x 7 – 9 is an expression.

33 + 77 – 88 is an expression.

We have,

We can start by substituting the function k(x) into the expression for p(x):

p(x) = k(x) + n

p(x) = x^2 + n

We don't have enough information to determine the value of n, but we can set up an equation using some other given information. If we know that p(2) = 5, we can substitute x = 2 and solve for n:

p(2) = 2² + n = 4 + n = 5

n = 5 - 4

n = 1

Therefore,

The value of n is 1 when the expression k(x) = x² and p(x) = k(x) + n.

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Answer:

well its a whole

diameter is all the way across so take 8.5 and times it by 3.14 which is 26.69 that is your volume  but if you want a more mathematical answer then

1 inch = 2.54 cm

16 oz = 1 lb

28.3 g = 1 oz

volume of a sphere = 4/3pi(r)^3

Step-by-step explanation:

Answer:

40

Step-by-step explanation:

Let x = width, then 3x = length, Area = l x w so,

(3x)(x) = 75

3x2 = 75

x = 5 = width, length = 15

Perimeter = 2l +2w = 10 + 30 = 40

Answer:

50

Step-by-step explanation:

180-30=150/3=50

3x + 30 = 180

     -30     -30     subtract 30 on both sides, solve for 180 - 30 which is 150.

___________

3x = 150

__    ___       divide 3 on both sides, solve for 150 ÷ 3 which is 50.

3       3

x = 50, final answer

hope this helps! :)

Answer:

Step-by-step explanation:

So, you need 24 unit cubes to make a model of the rectangular prism specified

Answer:

The coal freight train is traveling at a faster speed.

Step-by-step explanation:

The complete question is attached.

Both trains delivery can be represented using coordinates, where y represent the distance traveled and x represent the hours.

For the coal freight train, we can take two points. Let us use (1, 49) and (3, 147). Hence:

[tex]y-y_1=\frac{y_2-y_1}{x_2-x_1} (x-x_1)\\\\y-49=\frac{147-49}{3-1} (x-1)\\\\y-49=49(x-1)\\\\y=49x[/tex]

For the grain freight train, we can take two points. Let us use (0, 0) and (3, 135). Hence:

[tex]y-y_1=\frac{y_2-y_1}{x_2-x_1} (x-x_1)\\\\y-0=\frac{135-0}{3-0} (x-0)\\\\y=45x[/tex]

Since the coal freight train has a slope (49) higher than the grain freight train (45), hence the coal freight train travels faster

Answer:

B 54.5°

Step-by-step explanation:

Since we have a triangle,

CAB + ABC + BCA = 180 (sum of angles in a triangle)

Since CAB = 80° and ABC = 45.5°, substituting these into the equation, we have

80° + 45.5° + BCA = 180°

simplifying, we have

125.5° + BCA = 180°

collecting like terms, we have

BCA = 180° - 125.5°

BCA = 54.5°

So, the answer is B

Answer:

7

Step-by-step explanation:

Answer:

about 7.3 units

Step-by-step explanation:

the short lengths are 2 and 7, so like i explained earlier, 2^2 + 7^7 = x^2

we can simplify this to 53 = x^2, the so x = √53, which is about 7.3.

Answer:

x = 3

y = 2

Step-by-step explanation:

Opposite side of parallelogram are equal.

-4x + 6 = -6x

-4x = -12x

-x = -3

x = 3

7y + 3 = 12y - 7

-5y = -10

-y = -2

y = 2

Answer:

The answer is C i just took the test.

Answer:

it's C i just took the test

Step-by-step explanation:

The y-intercept represents the distance between city A and house which is 220 units.

It is defined as the relation between two variables, if we plot the graph of the linear equation we will get a straight line.

If in the linear equation, one variable is present, then the equation is known as the linear equation in one variable.

We have an equation that determines Jack's distance from City A t hours after leaving his house:

D = 220 - 55t

To find the y-intercept plug t = 0

D = 220 units

The y-intercept is (0, 220)

The equation represents the distance as Jack is closer to city A the distance between Jakie and city A is decreasing.

At t = 0

D = 220 units

When Jack is at home the distance between city A and the house is 220 units.

Thus, the y-intercept represents the distance between city A and house which is 220 units.

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Answer: 3.6

Step-by-step explanation: if the second number after the decimal point is five or above you would round the first number after the decimal point up.

Answer:

ab=de corresponding side of the congruent triangle are equal

5x+6=3x+10

5x-3x=10-6

2x=4

x=4/2=2

2 is your answer

Answer:

1/4 of the baguette was used for each sandwich, or 3/4 ft of it.

Step-by-step explanation:

Answer:

12rhehrhehrhjnehrhrhehrhehehrrhrjejejej

Answer:

Step-by-step explanation:

Use 3.14 for the pi DO NOT INCLUDE UNITS

Answer:

The water droplet will hit the ground 1.58 seconds after it started falling.

Step-by-step explanation:

The function:

y = -16*t^2 + 40

represents the height of a water droplet t seconds after falling from an icicle.

We want to find the value of t such that the water droplet hits the ground, and this will happen when y = 0.

Then we only need to solve the equation:

0 = y =  -16*t^2 + 40

0 =  -16*t^2 + 40

16*t^2 = 40

t^2 = 40/16

t = √(40/16) = 1.58

The water droplet will hit the ground 1.58 seconds after it started falling.

Answer:C the number of brushes

Step-by-step explanation:

Z represents the number of brushes, which if it’s 0 it means you’ve not purchased any.