easy prob pls help i need

Step-by-step explanation:i went on half of 84 wich was 42 so i found another problem that can equal into 84 wich was 63 green marbles 21 red             

Answer:

y = 2x2

y + 3x = 2x2 – 8

Step-by-step explanation:

The equations that are quadratic in nature are -

A quadratic equation is a equation that is of the form -

y = f{x} = ax² + bx + c.

Given are the set of equations.

A quadratic equation is a equation of degree 2. The equation with degree 2 are -

Therefore, the equations that are quadratic in nature are -

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Answer:

Option B is answer.

Step-by-step explanation:

Hey there!

Given;

f(X) = X(X+5)(x-8)

According to the factor theorem, f(X) = 0;

Or, X(X+5)(x-8) = 0

Either;

x = 0

Or;

(x+5)= 0

X = -5

Or;

(x-8)= 0

x = 8.

Therefore, the zeros of the polynomial are: 0,-5,8.

Hope it helps!

Answer: A) 18x +15

Step-by-step explanation:

First distribute

20x + 15 - 2x

Then combine like terms

18x + 15

Answer:

A. 18x + 15

Step-by-step explanation:

5(4x + 3) - 2x

20x + 15 - 2x  --> Distributive Property

18x + 15 --> Combine Like Terms (C.L.T)

We have to find the area under the graph but since we are not given the graph ,So let's learn how it is done. To estimate the area under the graph of function f from x, you can use rectangles. Here's how you can do it:

Step 1: Divide the interval [a, b] into six equal subintervals.
Step 2: Calculate the width of each rectangle by dividing the total width of the interval [a, b] by the number of rectangles (in this case, 6).
Step 3: For each subinterval, find the value of the function f at the right endpoint of the subinterval.
Step 4: Multiply the width of the rectangle by the value of the function at the right endpoint to find the area of each rectangle.
Step 5: Add up the areas of all six rectangles to estimate the total area under the graph of f from x.

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(a)the solution to the initial value problem is:

y =\(\frac{1}{\sqrt{\frac{1}{25}-\frac{t^{2} }{2}} }\)

(b) Since the argument of the square root is negative, y(6) is not defined. Therefore, the solution does not make sense at t=6.

(c)This means that the inverse of the energy of the system becomes infinite at t=5, which indicates a singularity or a breakdown of the model at that point. This could imply a physical phenomenon such as a phase transition or an instability in the system.

(a) We have the differential equation:

\(\frac{dy}{dt}\) = t\(y^{3}\)

Separating the variables, we get:

\(\frac{1}{y^{3} }\) dy = t dt

Integrating both sides, we get:

\(\frac{-1}{2y^{2} }\)= \(\frac{1}{2t^{2} }\) + C

where C is the constant of integration. To find C, we use the initial condition y(0) = \(\frac{1}{5}\):

\(\frac{-1}{2(\frac{1}{5} )^{2} }\)= \(\frac{1}{2(0)^{2} }\) + C

C = \(\frac{-1}{50}\)

Thus, the solution to the initial value problem is:

\(\frac{-1}{2y^{2} }\) =\(\frac{1}{2t^{2} }\) - \(\frac{1}{50}\)

Solving for y, we get:

y =\(\frac{1}{\sqrt{\frac{1}{25}-\frac{t^{2} }{2}} }\)

We need to check if y(6) is defined or not. We have:

y(6) = \(\frac{1}{\sqrt{\frac{1}{25}-\frac{6^{2} }{2} } }\) = \(\frac{1}{\sqrt{\frac{-34}{25} } }\)

Since the argument of the square root is negative, y(6) is not defined. Therefore, the solution does not make sense at t=6.

(c) If the equation was describing something like the energy of a system, the quantity y^2 would represent the inverse of the energy of the system. At t=5, we have:

y(5) = \(\frac{1}{\sqrt{\frac{1}{25}-\frac{5^{2} }{2} } }\) = 0

This means that the inverse of the energy of the system becomes infinite at t=5, which indicates a singularity or a breakdown of the model at that point. This could imply a physical phenomenon such as a phase transition or an instability in the system.

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the unit normal vector to the curve with vector equation \vec r \, (t) =<1^t,\ln(4/t^2), \, \ln(e/(t^4)) > r (t)=<1 t ,ln(4/t 2 ),ln(e/(t 4 ))> at the point where t=2t=2 is \vec n = <0,0,-1>

A unit normal vector is a normal vector with magnitude 1, and it points in the direction that is perpendicular to the tangent to the curve at a given point.

To determine the unit normal vector to a curve, it's important to find the tangent first and then find the normal. In this case, we're looking for the unit normal vector to the curve with the vector equation \vec r (t) =<1^t,\ln(4/t^2), \ln(e/(t^4)) > at the point where t = 2.

To find the unit normal vector to the curve with the vector equation \vec r (t) =<1^t,\ln(4/t^2), \ln(e/(t^4)) > at the point where t = 2, it is necessary to find the tangent to the curve and then find the normal. This is a crucial step in understanding the geometry of curves in 3D space.

To find the tangent to the curve, we'll differentiate the vector equation with respect to t and evaluate it at t = 2. The derivative of \vec r (t) is given by:

d\vec r/dt = <1, -2t^-3, -4e^-t^-4>

So the tangent to the curve at t = 2 is:

d\vec r/dt = <1, -2(2)^-3, -4e^-2^-4> = <1, 1.5, -1.648721>

Next, we'll find the normal to the tangent by taking the cross product of the tangent with a fixed vector, for example, the unit vector i = <1,0,0>. The cross product of two vectors results in a vector that is perpendicular to both of them.

The cross product of the tangent and the unit vector i is given by:

\vec T x \vec i = <1, 1.5, -1.648721> x <1,0,0> = <0,0,-1.5>

Since the magnitude of the normal is not 1, we'll normalize it by dividing it by its magnitude:

\vec n = \vec T x \vec i / ||\vec T x \vec i|| = <0,0,-1.5> / ||<0,0,-1.5>|| = <0,0,-1>

So the unit normal vector to the curve with the vector equation \vec r (t) =<1^t,\ln(4/t^2), \ln(e/(t^4)) > at the point where t = 2 is given by:

\vec n = <0,0,-1>

This is the unit normal vector that points in the direction that is perpendicular to the tangent to the curve at t = 2. The magnitude of 1 ensures that it's a unit vector and the direction points towards the normal direction.

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Answer:

50 x^3 y^2

Step-by-step explanation:

25y^5 = 5*5 * y*y

5xy  = 5*x*y

2x^3y = 2*x*x*x*y

The least common multiply is  found by taking the least number of times each appears

5 appears 2 times

2 appears 1 time  

x appears 3 times

y appears 2 times

5*5*2  * x*x*x * y*y

50 x^3 y^2

Answer:

50 x^3 y^2

Step-by-step explanation:

25y^5 = 5*5 * y*y

5xy  = 5*x*y

2x^3y = 2*x*x*x*y

The least common multiply is  found by taking the least number of times each appears

5 appears 2 times

2 appears 1 time  

x appears 3 times

y appears 2 times

5*5*2  * x*x*x * y*y

50 x^3 y^2

Answer: A and D

Step-by-step explanation:

a) The unit rate of change of d with respect to t is equal to 1.6

b) the graph of the line in the attached figure.

Given: A proportionate relationship between d and t with the characteristic that a rise in t of 5 units causes a rise in d of 8 units.

To locate: A rise of 5 units in t causes a rise of 8 units in d, according to the line's unit rate of change with respect to t.

=> Slope  =   Δd/Δt   = 8/5 = 1.6

the proportional relationship between d  and t

=> d ∝ t

=> d = 1.6t

t           d=1.6t

0          0

1           1.6

2           3.2

3           4.8

Plot the points and draw a line passing through points.

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Answer:

the answer is $3037.50

Step-by-step explanation:

%9 = 0.9

by multiplying 0.9 to 7500 we get 675

once we get this we must multiply it by the number of years

4 and 1 half or 4.5 times 675 gives us our answer my friend ;)

Answer:

do you need help with all ?

Step-by-step explanation:

Answer:

1. 3:5

2. 1:6

3. 1:2

4a. 2:3

b. 2:1

c. 1:3

5. 2:1

Answer:B

Step-by-step explanation: When solving expressions with parentheses it’s important to always solve what’s in parentheses first. And when there’s parentheses in parentheses, solve the parentheses that are in the parenthesis. Whew...I hope this helps :)

Answer:

The correct answer is 75 dgrees

Step-by-step explanation:

<CDE = arcCBE - arcCE / 2

arcCE = 105°

arcCBE = 360° - 105° =255°

<CDE = 255° - 105°

<CDE = 150 / 2

<CDE = 75°

Therefore the measure of < CDE is 75°

Answer:

A. Cells come from bacteria

Step-by-step explanation:

I did the test in edge

Please give me Brainliest<3

Answer:

correct answer is option (d)

120

Step-by-step explanation:

Tip:  

The area of a rectangle is the region occupied by a rectangle within its four sides or boundaries.

given length   l = (x+2)

given width    b= (x+4)

perimeter =44

2(l+b) =44

2[x+2+x+4]=44

4x +12 =44

4x = 32

x= 8

now length = x+2 =8+2 = 10

width  = x+4 = 8+4 = 12

area of rectangle = l x b = 10 x 12

    =120

Answer:

158

Step-by-step explanation:

If I is the midpoint of JH, JI= IH

JH= JI +IH

JH= JI +JI (subst. IH= JI)

JH= 2(JI)

Since JI= 79,

JH= 2(79)

JH= 158

we find that the numerical approximation using Euler's method gives y(2) ≈ 1.865, while the analytical solution gives y(2) = 2.5.

Using the formula y(n+1) = y(n) + Δx * f(x(n), y(n)), where f(x, y) = x² √y, we can calculate the values of y at each step. Here's the step-by-step calculation:

Step 1: For x = 0, y = 1 (initial condition).

Step 2: For x = 0.2, y = 1 + 0.2 * (0.2)² * √1 = 1.008.

Step 3: For x = 0.4, y = 1.008 + 0.2 * (0.4)² * √1.008 = 1.024.

Step 4: For x = 0.6, y = 1.024 + 0.2 * (0.6)² * √1.024 = 1.052.

Step 5: For x = 0.8, y = 1.052 + 0.2 * (0.8)² * √1.052 = 1.094.

Step 6: For x = 1.0, y = 1.094 + 0.2 * (1.0)² * √1.094 = 1.155.

Step 7: For x = 1.2, y = 1.155 + 0.2 * (1.2)² * √1.155 = 1.238.

Step 8: For x = 1.4, y = 1.238 + 0.2 * (1.4)² * √1.238 = 1.346.

Step 9: For x = 1.6, y = 1.346 + 0.2 * (1.6)² * √1.346 = 1.483.

Step 10: For x = 1.8, y = 1.483 + 0.2 * (1.8)² * √1.483 = 1.654.

Step 11: For x = 2.0, y = 1.654 + 0.2 * (2.0)² * √1.654 = 1.865.

Therefore, using Euler's method with a step size of Δx = 0.2, we approximate y(2) to be 1.865.

To obtain the analytical solution to the ODE, we can separate variables and integrate both sides:

∫(1/√y) dy = ∫x² dx

Integrating both sides gives:

2√y = (1/3)x³ + C

Solving for y:

y = (1/4)(x³ + C)²

Using the initial condition y(0) = 1, we can substitute x = 0 and y = 1 to find the value of C:

1 = (1/4)(0³ + C)²

1 = (1/4)C²

4 = C²

C = ±2

Since C can be either 2 or -2, the general solution to the ODE is:

y = (1/4)(x³ + 2)² or y = (1/4)(x³ - 2)²

Now, let's evaluate y(2) using the analytical solution:

y(2) = (1/4)(2³ + 2)² = (1/4)(8 + 2)² = (1/4)(10)² = 2.5

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Answer: 5/13

Step-by-step explanation: i did this IXL and got it right

Answer:4

Step-by-step explanation: each quarter of an hour is 1.5 miles they both can go into 12 so if you multiply 2*4 and 3*4 you get 8/12 and if you multiply 3*3 and 4*3 you get 9/12 then you subtract 9/12 by 8/12 to get so 1/12=1/2 miles so you would subtract 4 1/2 by 1/2 to get 4

Answer:

fafg and then do the 2a ab 2b

Step-by-step explanation:

Answer:

3⁷

Step-by-step explanation:

it's kinda messy but my step by step is in the picture. practically when you "multiply" an exponent (as long as they have the same base number) with another like 3⁴×3⁵ or (3⁴)⁵ you add the exponents together so you'd get 3⁴×3⁵=3⁹

when dividing an exponent by another exponent (with again, the same base number) you subtract the exponents like this: 3⁶÷3² or 3⁶/3² would equal 3⁴

Answer:

1,318

Step-by-step explanation:

you will multiple 6.59 by 2

Answer:

22.40 pounds

Step-by-step explanation:

2 cashews =13.18 pounds

A quarter of cashew =1/4*6.59

=9.226 pounds

Total amount =22.406 pounds

Nearest cent=22.40 pounds

The ratio of the area of the smaller square to the area of the larger square, that have a perimeter ratio of 2:7 is 4:49

The ratio of the perimeter of the squares = 2 : 7

Required: The ratio of the area of the smaller square to the larger square.

Solution: The perimeter of a square of side x is 4•x

The comparative length of the side of each square are therefore;

2/4 and 7/4

The comparative area are therefore;

The ratio of the areas of the square is therefore;

(2/4)² : (7/4)² = 1/4 : 49/16

Multiplying both sides of the ratio by 16 gives;

16×1/4 : 16×49/16

4:49

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This sequence likely belongs to a bird rather than to a dog, snake, or horse.

DNA stands for deoxyribonucleic acid and it is essential in genetics and biology because it composes genes. Moreover, DNA is expressed as a sequence of four bases:

Considering all living organisms share a common ancestor and modern species evolved from older species, a similarity in DNA shows organisms are genetically and phenotypically similar.

In the case of the penguin and the fossilized species, the DNA sequence is almost identical. Due to this, this organism should be very similar to the penguin, and therefore, the most likely organism is another bird.

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I got the answer and steps for this math problem,

Answer:

\(5 \times - 13 = 2 \times - 9 - 4 + 3 \times \\\)

= 1 5/9 or 1 .5555556.

Step-by-step explanation:

Please comment if I'm

wrong...

Responder:

Los cuadros 89 y 91 presentan proporcionalidad directa

El cuadro 90 muestra una correlación directa.

Explicación paso a paso:

De la imagen adjunta:

Cuadro 89:

Para mostrar proporcionalidad directa:

y α x

y = kx; k = constante de proporcionalidad

Comprobando las tablas:

Cuadro 89:

A = 1,5; B = 3

B = kA; 3 = 1.5k

k = B / A

k = 3 / 1,5 = 2

Usando k = 2;

demuestre que B = 4 cuando A = 2; para establecer proporcionalidad directa.

B = 2 * 2 = 4

Por tanto, el cuadro 89 exhibe proporcionalidad directa

Comprobando las tablas:

Cuadro 90:

C = 2; D = 8

D = kC; 8 = 2k

k = 8/2 = 4

Usando k = 4;

demuestre que D = 9 cuando C = 3; para establecer proporcionalidad directa.

B

D = 4 * 3 = 12

De la tabla, D = 9;

Por tanto, el cuadro 90 presenta una correlación directa pero no una proporcionalidad directa.

Comprobando las tablas:

Cuadro 91:

E = 1; F = 1/2

F = kE; 1/2 = k

k = 1/2

Usando k = 1/2;

demuestre que F = 3/2 cuando E = 3; para establecer proporcionalidad directa.

F = 1/2 * 3 = 3/2

Por tanto, el cuadro 91 presenta proporcionalidad directa.

Answer:

b = -3.

Step-by-step explanation:

If the 3 points are collinear then:

Slope of AB = Slope  of BC and so

(0-2)/(b + 6) = (-4-0)/( 3 - b)

-4(b + 6) = -2(3 - b)

-4b - 24 = -6 + 2b

-24 + 6 = 2b + 4b

6b = -18

b = -3.

Answer:

  B)  108°

Step-by-step explanation:

You want the interior angle measure for a regular pentagon.

The interior angles of a regular n-gon will have measure ...

  180° -360°/n

When n = 5, the interior angles have measure ...

  180° -360*/5 = 180° -72° = 108°

The interior angles of a regular pentagon are 108°.

__

Additional comment

The 360°/n comes from the fact that the sum of exterior angles for any convex polygon is 360°. For a regular n-gon, those exterior angles are congruent, so each is 360°/n. The interior angle is its supplement.

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