PLEASE HELP ASAP!!! I dont understand

Answer:

N = N0 e^-x t   is the general form for Half-Life decay of atoms

B would be the correct choice

The type of model is exponential if the situation is every day half a bacterial population dies option (B) is correct.

It is defined as the function that rapidly increases and the value of the exponential function is always positive. It denotes with exponent y = a×

where a is a constant and a>1

We have a situation:

Every day half a bacterial population dies

As we know from the exponential function, the function that rapidly increases or decreases.

The standard form of the exponential function is:

y = a×

As the everyday half of bacterial population dies

Let the starting population is a

After one day: = a/2

After second day: = a/4

After third day: = a/8

After nth day: = (a/2)(1/2)ⁿ⁻¹

The above expression represents an exponential function.

Thus, the type of model is exponential if the situation is every day half a bacterial population dies option (B) is correct.

Learn more about the exponential function here:

brainly.com/question/11487261

#SPJ5

Answer: 0.5

Step-by-step explanation:

[tex]cot(x)=\frac{1}{tan(x)} =\frac{1}{\frac{sin(x)}{cos(x)} } =\frac{cos(x)}{sin(x)}\\\\sin(x)cot(x)=sin(x)*\frac{cos(x)}{sin(x)} =cos(x)\\\\cos(x)=sin(x)cot(x)=0.5[/tex]

60, because 6 times 10 is just that

Answer:

60

Step-by-step explanation:

6x10 is 60

The correct way for a person can increase the wages he or she expects to earn is,

⇒  By choosing a job with a high market value.

Mathematical expression is defined as the collection of the numbers variables and functions by using operations like addition, subtraction, multiplication, and division.

Given that;

To find one way for a person can increase the wages he or she expects to earn.

Since, We know that;

A job with a high market value give more income than another things.

Thus, The correct way for a person can increase the wages he or she expects to earn is,

⇒  By choosing a job with a high market value.

Learn more about the mathematical expression visit:

brainly.com/question/1859113

#SPJ7

Answer:

they are congruent.

Step-by-step explanation:

just move A down to -1 and and you can see they are the same.

Answer:

they are congruent.

Step-by-step explanation:

just move the A shape down to -1 and and you can see that they are the same.

Answer:

x = 7

Step-by-step explanation:

The triangles are similar

12/8 = (x+3+5)/(x+3) cross multiply expressions

12x + 36 = 8x + 64

12x - 8x = 64 - 36

4x = 28 divide both sides by 4

x = 7

Step-by-step explanation:

y= x^2+5x-7

the vertex is -2.5 , -13.25

solutions ( -6.14 , 0) and (1.14 , 0 )

..........

y= -x^2+3x+8

vertex(1.5 ,10.25)

solutions ( -1.7 , 0) and (4.7 ,0 )

Answer:

The total number of girls is 47.

Step-by-step explanation:

Below are the following values:

Total number of students = girls + boys

Total number of students = 47 + 324

Total number of students = 371

We are required to find the number of girls in the school.

Since a total number of boys is 324 and thus total number of girls is 47.

[tex]\huge\text{Hey there!}[/tex]

[tex]\huge\boxed{\mathsf{d^2 = 41}}[/tex]

[tex]\huge\boxed{\text{TAKE the SQUARE ROOT}}[/tex]

[tex]\huge\boxed{\mathsf{d = \pm \sqrt{41}}}[/tex]

[tex]\huge\boxed{\textsf{SIMPLIFY it}}[/tex]

[tex]\huge\boxed{\mathsf{d = \pm \sqrt{41}\ or \sqrt{-41}}}}[/tex][tex]\huge\boxed{\mathsf{Answer: d = \bf \sqrt{41} \ or \ \sqrt{-41}}}\huge\checkmark[/tex]

[tex]\huge\text{Good luck on your assignment \& enjoy your day!}[/tex]

~[tex]\huge{\boxed{\frak{Amphitrite1040:)}}}[/tex]

Answer:

A = 93.31 ft²

Step-by-step explanation:

The area (A) of a trapezoid is calculated as

A = [tex]\frac{1}{2}[/tex] h (b₁ + b₂)

where h is the perpendicular height and b₁, b₂ the parallel bases

Here h = 6.2, b₁ = 7.8, b₂ = 14.7 + 7.6 = 22.3 , then

A = [tex]\frac{1}{2}[/tex] × 6.2 × (7.8 + 22.3) = 3.1 × 30.1 = 93.31 ft²

Answer:

Answer: B

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

Hope it helps...

Have a great day!!

Answer:

10 T Shirts to have 105 dollars

Step-by-step explanation:

[tex]10.5x = 7.5x + 30[/tex]

[tex]3x = 30[/tex]

[tex]x = 10[/tex]

Answer:

7/12

Step-by-step explanation:

add up all of the buttons

30+40+50=120

add up all of the blue and red buttons

30+40=70

then divide the added values

70/120

simplify

7/12

Answer:

7/12

Step-by-step explanation:

It will be seven 7 by 12

Answer:

x = 2y/3

y = 3x/2

Answer:

Step-by-step explanation:

Answer:

For the question below, you will need to find the GCF of 45 and 60. In this instance it is 5, so it will be outside the box. The GCF answers will be inside the parenthesis, which is 7 and 12.

45x + 60 = 5(7x + 12)

In this question you have to multiply 2 with every number inside the parenthesis. So 2 × 10x and 2 × 4.

2(10x+4) = 20x + 8

Hope this helped.

Answer:

sin R = 20 / 29

Step-by-step explanation:

Since this is a right triangle, we can use trig functions

sin R = opp / hyp

sin R = 20 / 29

Answer:

49

Step-by-step explanation:

x = 7

1 / x^-2

= x^2

= 7^2

= 49

Answer: 49

Step-by-step explanation: yeet

Answer:

[tex] \displaystyle \theta = - {41.8}^{ \circ} + 2n\pi, {210}^{ \circ} + 2n\pi , {221.8}^{ \circ} +2nπ , {330}^{ \circ} +2nπ [/tex]

Step-by-step explanation:

we would like to solve the following trigonometric equation:

[tex] \displaystyle 6 { \sin}^{2} ( \theta) + 7 \sin( \theta) + 2 = 0[/tex]

to do so we can let sinθ be u so it'll be easier to solve:

[tex] \displaystyle 6 { u}^{2} + 7 u + 2 = 0[/tex]

to notice is that it's a quadratic equation to solve the equation we can consider factoring method in this method we rewrite the middle term as sum or substraction of two different terms in that case 3u+4u can be mentioned:

[tex] \displaystyle 6 { u}^{2} +3u + 4u + 2 = 0[/tex]

(continuing the method) well we can factor out the common terms and that yields:

[tex] \displaystyle 3u(2 { u}^{} +1) + 2(2u + 1)= 0[/tex]

group:

[tex] \displaystyle (3u+ 2)(2u + 1)= 0[/tex]

by Zero product property we acquire:

[tex] \begin{cases}\displaystyle 3u+ 2 = 0 \\ 2u + 1= 0 \end{cases}[/tex]

solve the equation for u:

[tex] \begin{cases}\displaystyle u = - \frac{2}{3} \\ \\ u= - \dfrac{1}{2} \end{cases}[/tex]

substitute back:

[tex] \begin{cases}\displaystyle \sin( \theta) = - \frac{2}{3} \\ \\ \sin( \theta) = - \dfrac{1}{2} \end{cases}[/tex]

take inverse trig in both sides and that yields:

[tex] \begin{cases}\displaystyle \theta = - {41.8}^{ \circ}, {221.8}^{ \circ} \\ \\ \theta = {210}^{ \circ} , {330}^{ \circ} \end{cases}[/tex]

add period of 2nπ:

[tex] \displaystyle \theta = - {41.8}^{ \circ} + 2n\pi, {210}^{ \circ} + 2n\pi , {221.8}^{ \circ} +2nπ , {330}^{ \circ} +2nπ [/tex]

and we're done!

Hello!

[tex]\bf y = ( x + 3 )^{2} - 5 [/tex]

- Separate the function into parts to determine the domain of each part.

[tex]\bf ( x + 3 )^{2} \\ x + 3 \\ 5 [/tex]

- The domain of a polynomial function is the set of all real numbers.

[tex]\bf x ∈ ℝ [/tex]

Domain: ( -∞; ∞ )

[tex]\bf y = ( x + 3 )^{2} - 5 [/tex]

- Write the second degree function in standard form.

[tex]\bf y = x^{2} + 6x + 4 [/tex]

- Identifies the coefficients a and b of the second degree function.

[tex]\bf a = 1, b = 6 [/tex]

- Find the x coordinate of the vertex by substituting a = 1 and b = 6 in x = -b / 2a.

[tex]\bf x = -\frac{6}{2×1} [/tex]

[tex]\bf x = -\frac{6}{2} [/tex]

[tex]\bf x = -3 [/tex]

- Calculates the value of the function for x = -3.

[tex]\bf y = ( x + 3 )^{2} - 5 [/tex]

[tex]\bf y = -5 [/tex]

Range: ( -3; -5 )

Answer: No answer

Good luck! :)

Answer:

D. undefined

General Formulas and Concepts:

Algebra I

Step-by-step explanation:

A horizontal line has a slope of 0.

A vertical line has a undefined slope.

Any other line will have a slope of some number.

Answer:

D

Step-by-step explanation:

The slope of a line represents  the number of units a line rises or falls vertically for each unit of horizontal change from left to right.

1) A line with positive slope (m > 0) rises from left to right.

2) A line with negative slope (m < 0) falls from left to right.

3) A line with zero slope is horizontal (parallel to x-axis).

4) A line with undefined slope is vertical (parallel to y-axis).

Ans: The line is parallel to y-axis. So, the slope is undefined

▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓

[tex]\boxed{\pmb{\pink{\sf{SI = \dfrac{Principal \times Rate \times Time}{100}}}}}[/tex]

[tex]\begin{gathered}\sf{\longrightarrow \: {S.I = \dfrac{10000\times 7 \times 2}{100}}}\\\\\sf{\longrightarrow \: {S.I = \dfrac{100\times 14}{1}}}\\\\\sf{\longrightarrow \: {S.I =100 \times 14}}\\\\\bold{\longrightarrow \: {S.I =1400}}\end{gathered}[/tex]

[tex]\boxed{\pmb{\red{\sf{Amount = Principal + Simple \: Interest}}}}[/tex]

[tex]\begin{gathered}\sf{\longrightarrow \: Amount = 10000 + 1400}\\\\\sf{\longrightarrow \: Amount = 10000 + 1400}\\\\\bold{\longrightarrow \: Amount = 11400}\end{gathered}[/tex]

Shela will return Rs. 11,400 including the interest of Rs. 1400 at the end of 2 years.

▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓

Answer:

40 m/s

Step-by-step explanation:

144 X (5/18) = 8X5 = 40

Given:

In [tex]\Delta ABC, m\angle A=50^\circ, m\angle B=60^\circ[/tex] and [tex]m\angle C=70^\circ[/tex].

[tex]\Delta ABC[/tex] is rotated [tex]90^\circ[/tex] counterclockwise to [tex]\Delta XYZ[/tex].

To find:

The measure of angle Z.

Solution:

We know that the rotation is a rigid transformation. It means the image and figure are congruent to each other.

[tex]\Delta ABC[/tex] is rotated [tex]90^\circ[/tex] counterclockwise to [tex]\Delta XYZ[/tex]. So, [tex]\Delta ABC\cong \Delta XYZ[/tex].

[tex]\angle C\cong \angle Z[/tex]                      (CPCTC)

[tex]m\angle C=m\angle Z[/tex]

[tex]70^\circ=m\angle Z[/tex]

Therefore, the measure of angle Z is 70 degrees.

Answer:70

Step-by-step explanation:

Answer:

Hello,

k=-3 and h=-2

Step-by-step explanation:

[tex]5\ is\ a \ root \of \ x^2+(k-1)*x-5=0\\\\5^2+(k-1)*5-5=0\\\\5*(k-1)+20=0\\\\k-1=\dfrac{-20}{5} \\\\k=-4+1\\\\\boxed{k=-3}\\[/tex]

h+1 is thus a root of x²+(-3-1)*x-5=0

x²-4x-5=0

x²+x-5x-5=0

x(x+1)-5(x+1)=0

(x+1)(x-5)=0

h+1=-1

h=-2

Given:

The polynomial is:

[tex]3n^2(n^2+4n-5)-(2n^2-14n+3)[/tex]

To find:

The difference of the polynomials and classify it in terms of degree and number of terms.

Solution:

Consider the polynomial,

[tex]P(x)=3n^2(n^2+4n-5)-(2n^2-14n+3)[/tex]

On simplification, we get

[tex]P(x)=3n^4+12n^3-15n^2-2n^2+14n-3[/tex]

[tex]P(x)=3n^4+12n^3-17n^2+14n-3[/tex]

The degree of this polynomial is 4 and the number of terms is 5.

Therefore, the correct option is D.

Answer:

answer for  n^4 equation (see attached)

Step-by-step explanation:

Answer:

On a number line, graph a number that is twice as far from 5 as it is from 8.

Step-by-step explanation:

11 is twice as far from 5 as it is from 8

Answer:

For x there is no distance since they are both for. For y, they are -6 apart.

Step-by-step explanation:

Answer:

Fox x Diya is no distance since they are both for they are six apart

Step-by-step explanation:

(4-10)

and= just opposite size (10- 4) .

10 -4 = 6 answer 6

and (4-4)

answer is

0

the answer is six apart

understand

Answer:

x = 1

Step-by-step explanation:

2(76x - 1) = 150

76x - 1 = 75

76x = 76

x = 1

Answer:

Given the proposed interrogate, the answer(s) to the following are identified as “-8, -6, -4, -2…” and “2, 4, 8, 16”.

Step-by-step explanation:

Accountable Conditions: Although the question implies there is only one individual mathematical statement which fits the conditions stated in the interrogate, both sequences listed above fit such, thus are both correct.

To evaluate for such, a comprehension of an “Arithmetic Sequence” is obligated:

In arithmetic sequences, the presence of a consecutive deviation or fixed pattern must be consistent and present throughout each and individual number or value contained within the particular set.

For Example: 3, 5, 7, 9, 11, 13, …

The deviation, or the number required to produce the subsequent value is identified as +2.

Now, apply such definitions to the peculiar problem:

A. 1, -3, 9, -27,… has -4, +12, -36, hence is not consistent. Thus, A cannot be correct.

B. -2, 4, -6, 8,… has +6, -10, +14, hence does not obtain a persistent consecutive pattern.

C. -8, -6, -4, -2… has +2, +2, +2, hence is consistent. Thus, C is correct.

D. 2, 4, 8, 16,… has +2, +2, +2, hence is consistent. Thus, D is correct.