To get the 10% discount, a shopper must spend no less than $500. Use d to represent the spending (in dollars) of a shopper who gets the discount. Write the inequality

y = 3x² + 1

Differentiate both sides with respect to t :

dy/dt = 6x dx/dt

We're given that dy/dt = +3 units/second, so when x = 2 we find

3 u/s = 6 • 2 dx/dt

dx/dt = 3/12 u/s = 1/4 u/s

which means x is increasing at a rate of 1/4 units per second.

Answer:

Ones place

Step-by-step explanation:

Hope this helped, Have a Wonderful Day/Night!!

Answer:

2991

Step-by-step explanation:

Answer:

5304

Step-by-step explanation:

hope it helped

Answer:

5304

Step-by-step explanation:

You can use the distributive property to solve for this

To “distribute” means to divide something or give a share or part of something. According to the distributive property, multiplying the sum of two or more addends by a number will give the same result as multiplying each addend individually by the number and then adding the products together.

Have a good day!

Answer:

This is the best i got

Step-by-step explanation:

Slope = 2

x-intercept = 8/2 = 4

y-intercept = 8/-1 = -8.00000

answer : 8.00000

Answer: y=2x-8

Slope 2 initial value I’m guessing is the y intercept which is -8

Step-by-step explanation:

12x-6y=48

-12x -12x

-6y=-12x+48

Divide by -6

Y=2x-8

Answer:

B. (2, 2)

Step-by-step explanation:

The coordinate (2, 2) is the only thing they share in common, both lines intersect each other on that coordinate.

Answer:

y=-7x+1

Step-by-step explanation: Hope this helps!!

Can i have brainliest?

Answer:no

Step-by-step explanation:

Answer: $450

Step-by-step explanation:

Given that:

Amount borrowed = $450

Amount charged per lawn = $35

Operating cost per lawn = $8

Jimmy's cost (C(x)) :

Amount borrowed + operating cost

If x lawns are mowed :

$450 + $8 per lawn

$450 + $8x

C(x) = 450 + 8x

Intercept (value of y when x = 0

Value of C(x) ; when x = 0

C(x) = 450 + 8(0)

C(x) = 450 + 0

C(x) = 450

Answer:

4(3a+5)

Step-by-step explanation:

When you factor an algebraic expression, you divide the initial expression by a common factor to produce your answer.

have a gr8 day (:

Answer: You can have about 13 loafs of pumpkin bread.

Step-by-step explanation: 3/4 is the same as 0.75 so you will add 0.75 to 0.75 13 times

0.75+0.75+0.75+0.75+0.75+0.75+0.75+0.75+0.75+0.75+0.75+0.75+0.75=13.33.

13.3 is not a whole number so you will say 13.

Answer:

400 square feet

Step-by-step explanation:

20 x 20 = 400

HOPE THIS HELPS

PLZZ MARK BRAINLIEST

Answer:

400 square feet

Step-by-step explanation:

Area = length x width

A = lw

A = 20 x 20

20 x 20 = 400

Area = 400 ft^2

Answer:

450 min hope this helps!

Step-by-step explanation:

Answer

It will take him 450 minutes to read 90 pages.

Explanation

Luis can read 3 pages every 15 minutes.

You are trying to find how long it will take him to read 90 pages.

Set up this ratio.

[tex]\frac{15}{3} =\frac{x}{90}[/tex]

To get from 3 to 90, you multiply by 30. Do the same thing to 15.

15 times 30 is 450.

It will take Luis 450 minutes to read 90 pages.

Answer:

Increased on the test more than the quiz

Step-by-step explanation:

If we do 21/27, we get 0.77777777777, as a percent, 0.77.

Then we do 66/80, and get 0.825, as a percent, 0.82.

We can already tell that she did better on the test, than the quiz.

Answer:

1,128

Step-by-step explanation:

94 x 12 = 1,128

what hy7h7yh

Answer:

1128 inches.

Step-by-step explanation:

12 inches = 1 feet

94 * 12 = 1128

Answer: change in y over Change in x(slope)

2. 3/3 or 1

4. 5/4

6.4/5

8.1/4

10.-2/-3

12.1/-3

14.-9/9 or -1

Answer:

2.3/14              4.-4 3/8

6.1/11                 8. 1/10

10.1/8                 12. 4/7

14.-2  8/9           16. 22

18.10 2/3            20. 2 4/7

Step-by-step explanation:

I feel like it will take me forever to explain but you should head to a site like Khanacademy to explain the topic or perhaps if this is homework ( and I just gave you answers for it ;-;) you should ask your teacher

Hopefully I was helpful

Love yall!

9514 1404 393

Answer:

  400207

Step-by-step explanation:

Any calculator can form this sum for you. It is ...

  4×10^5 +2×10^2 +7

  = 400,000 +200 +7

  = 400207

Answer:

Step-by-step explanation:

Perimeter formula

Solving for w

Option B is correct

Answer:

jjk

Step-by-step explanation:

,,45

Answer:

the answer is c because 2 *5 is 10+2 is 12-3 is 9

Step-by-step explanation:

Answer: (2,-4) is point a

Step-by-step explanation: when looking for a plotted point, the x axis can drop down to negatives since they y axis is negative

Answer:

In the image, we can see that the arrows go from the negative pole to the positive pole.

This image then represents the flow of electrons in the situation (Remember that we define current as the flow of "holes", so current is usually defined in the opposite direction than the flow of electrons).

Second question:

In a current, the electrons usually do not move really fast (in average velocity).

Now, the current flowing in a given material will depend mostly on:

The area of the material (a cable with larger diameter can have a larger electricity than a thin cable) and the material itself (there are some materials that are really good conductors, and there are materials that are bad conductors)

Now, this concept of good/bad conductor can be thought as follows,

A bad conductor has a lot of particles (for example electrons in the inner energy levels) in the way of the flow of electrons, and when the electrons want to move, they may interact with those particles, and then the flow of electrons is diminished.

For a good conductor, those particles do not interact, and there are not a lot of these particles. (Also good conductors have more electrons in the valence level, so there are more electrons that can flow in the material).

Another important factor is the temperature of the material, we know that when we increase the temperature of a material, the particles of this material will have an increment in its kinetic energy, then those particles will be moving a lot, and there is a larger possibility that there will be an interaction with the flowing electrons.

In the case where the object is really cold, the kinetic energy of the particles will be small, and these will be more "ordered", which helps with the current flow.

Then we can conclude that the electricity does not really depend on the speed of the electron, it depends more of the material of the conductor and the cross-section area.

Answer:

-3>-5

Step-by-step explanation:

Complete Question

The complete question is shown on the first uploaded image

Answer:

The value is  [tex]P( 1.39 < z < 1.53 ) = 0.0193[/tex]

Step-by-step explanation:

From the question we are told to obtain the area to the of the z-score 1.39 and to the left of the z-score 1.53, this is mathematically represented as

        [tex]P( 1.39 < z < 1.53 ) = P( z < 1.53 ) - P( z < 1.39 )[/tex]

From the z table on the question the area under the normal curve to the left corresponding to 1.53 and  1.39  is

       [tex]P( z < 1.53 ) = 0.9370[/tex]

and

      [tex]P( z < 1.39 ) = 0.9177[/tex]

So

     [tex]P( 1.39 < z < 1.53 ) = 0.9370 - 0.9177[/tex]

=>  [tex]P( 1.39 < z < 1.53 ) = 0.0193[/tex]

Answer:

x = 4

Step-by-step explanation:

-5/6x = -10/3

x = -10/3 / -5/6

x = 4

Topic: algebraic equations

If you like to venture further, feel free to check out my insta (learntionary). I'll be constantly posting math tips and notes! Thanks!

Answer:

Since slope of line y = 0 and y = 4

Step-by-step explanation:

Given:

y = 4

Computation:

Equation of slope;

y = ax + c

So,

y = (a)(0) + 4

Since slope of line y = 0 and y = 4

Answer:

y=0

Step-by-step explanation:

Answer:

The derivative of function [tex]f(x)=5\sqrt{x}[/tex] is [tex]\frac{5}{2\sqrt{x} }[/tex]

Step-by-step explanation:

We need to find derivative of the given function [tex]f(x)=5\sqrt{x}[/tex]

Finding the derivative:

[tex]\frac{d}{dx}(5\sqrt{x} )[/tex]

Using the rule (a.f)' = a(f)', taking out constant value 5

[tex]=5\frac{d}{dx}(\sqrt{x} )[/tex]

We know [tex]\sqrt{x} =x^{\frac{1}{2}[/tex] Replacing [tex]\sqrt{x}[/tex]

[tex]=5\frac{d}{dx}(x^{\frac{1}{2}} )[/tex]

Applying derivative rule: [tex]\frac{d}{dx}(x^a)= a.x^{a-1}[/tex]

[tex]=5\times\frac{1}{2}(x^{\frac{1}{2}-1} )\\=\frac{5}{2}(x^{-\frac{1}{2}} )\\=\frac{5}{2x^{\frac{1}{2}}}\\=\frac{5}{2\sqrt{x} }[/tex]

So, the derivative of function [tex]f(x)=5\sqrt{x}[/tex] is [tex]\frac{5}{2\sqrt{x} }[/tex]