Marty made a $220 bank deposit using $10 bills and $5 bills. She gave the teller a total of 38 bills, how many $5 bills were in the deposit? A) 6 five-dollar bills B) 28 five-dollar bills C) 32 five-dollar bills D) 34 five-dollar bills

Answer: 8 L of 100% pure acid and 64 L of 10% acid must be combined

Step-by-step explanation:

According to the dilution law,

[tex]C_1V_1+C_2V_2=C_3V_3[/tex]

where,

[tex]C_1[/tex] = concentration of pure acid solution = 100 %

[tex]V_1[/tex] = volume of pure acid solution = x L

[tex]C_2[/tex] = concentration of another acid solution= 10%

[tex]V_2[/tex] = volume of another acid solution= (72-x) L

[tex]C_3[/tex] = concentration of resulting acid solution = 20 %

[tex]V_1[/tex] = volume of resulting acid solution = 72 L

Putting the values in the equation:

[tex]100\times x+10\times (72-x)=20\times 72[/tex]

[tex]x=8L[/tex]

Therefore, the laboratory technician must take 8 L of 100% pure acid and (72-8) = 64 L of 10% acid to get 72​-liter batch of a 20​% acid solution.

The probability that the number on the tile is a multiple of 7 or a multiple of 8 is 0.24 or 24%.

To find the probability that a tile picked at random has a number that is a multiple of 7 or a multiple of 8, we need to count the number of tiles that satisfy this condition and divide it by the total number of tiles.

First, let's find how many numbers from 1 to 50 are multiples of 7 and multiples of 8 separately.

Multiples of 7:

7, 14, 21, 28, 35, 42, 49

There are 7 multiples of 7 between 1 and 50.

Multiples of 8:

8, 16, 24, 32, 40, 48

There are 6 multiples of 8 between 1 and 50.

However, we need to be careful not to count the numbers that are multiples of both 7 and 8 (multiples of 56). There's only one such number in the range (56).

So, the total number of tiles with numbers that are multiples of 7 or multiples of 8 is 7 + 6 - 1 = 12.

The total number of tiles from 1 to 50 is 50.

Now, we can find the probability:

Probability = [tex]\frac{\text{Number of favorable outcomes}}{\text{Total number of outcomes}}[/tex]

Probability = [tex]\frac{12}{50}[/tex]

Probability = 0.24

So, the probability that the number on the tile is a multiple of 7 or a multiple of 8 is 0.24 or 24%.

the answer would be p-28=c

Mark Me Brainliest !

Answer:

P - 28 = C

Step-by-step explanation:

P (Regular Price  )

C ( Cost Savings )

You Noticed These Jeans You Liked.

You Couldn't Afford Them So You Waited Til The Price Dropped.

When Prices Drop Its Either 1 of 2 Reasons

Holiday Seasons Or Price Elasticity

So These Jeans Become $28 On The Market.

Simply You Figure Out How Much You'll Save By Comparing The Original Price To The Discounted Price.

There For Your Answer Will Be The Following :

Regular Price - Discounted Price = Cost Savings

To solve for R in the equation [tex]C=2\pi R[/tex] divide both sides by 2π to get [tex]R = C / (2\pi )[/tex].

To solve the equation [tex]C=2\pi R[/tex] for R, we need to isolate R on one side of the equation. Here are the steps to do this:

Start with the original equation: [tex]C=2\pi R[/tex]

Divide both sides of the equation by 2π to isolate [tex]R: R = C / (2\pi ).[/tex]

Given variation, this is also equivalent to [tex]r=1/2\pi C[/tex].

Now, R is the subject of the equation, and you can use this formula to find the radius (R) if you know the circumference (C) of a circle.

Answer:

both alicia and jamal

Step-by-step explanation:

From the given steps we can see that both Alicia and Jamal completed the proof correctly.

Option C

Given :

3x+7=x-5

prove: x=-6

Alicia's workout

3x+7=x-5 : given

2x+7=-5: subtraction property of equality

2x=-12: subtraction property of quality

x=-6: division property of equality

Alicia's steps are correct. She proved x=-6

jamal's work

3x+7=x-5 : given

7=-2x-5 : subtraction property of equality

12=-2x: addition property of equality

-6=x proved

Jamal's steps are also correct. Jamal started by subtracting 3x from both sides. That approach is also correct. He proved x=-6

so, both Alicia and Jamal are correct

Learn more :  brainly.com/question/20473805

Answer:

45 or more

Step-by-step explanation:

If x is the amount of pastries they sell, we need to multiply it by $3.00 to know how much they raise. Total earnings: $3.00x

They need to raise at least $135, that is $135 or more.

So, $3.00x has to be greater than $135 or equal.

Written as an inequality is:

$3.00x [tex]\geq[/tex] $135

We divide both sides by $3.00 and we have:

x [tex]\geq[/tex] $135/$3.00 = 45

Therefore, they need to sell 45 or more pastries to meet the goal.

The height of the building is approximately 78.4 meters.

To find the height of the building, we can use the formula d = v0t + 1/2gt2, where d is the height, v0 is the initial horizontal speed, t is the time, and g is the acceleration due to gravity. In this case, since the ball is thrown horizontally, the initial vertical speed is 0 and there is no initial vertical acceleration. So, d = 0(4.0) + 1/2(9.8)(4.0)2. Solving this equation gives us a height of approximately 78.4 meters.

Answer:

Step-by-step explanation:

P(t)=130t -0.4t^4 +1200

The population will be max when first differential of p(t) =0

So p'(t) =130-1.6t^3=0

1.6t^3=130

t^3 =130/1.6

t^3 =81.25

t = cube root of 81.25

t =4.3 months

P(max) =130(4.3) -0.4(4.3)^4 +1200

= 559-136.75+1200

=1622

Population will disappear when p(t) =0

Let the depth of the river = d

So in order to find the product, you simply multiply

so the product of 86 and the depth of the river would be 86 * d

or 86d.

Hope this answers your question. Have a great day!

The inverse function is [tex]f^{-1}(x) = \frac{x - 3}{2}[/tex].

To find the inverse of the function [tex]f(x) = 2x + 3[/tex], follow these steps:

Replace [tex]f(x)[/tex] with [tex]y[/tex]:
[tex]y = 2x + 3[/tex]

Interchange the variables [tex]x[/tex] and [tex]y[/tex]:
[tex]x = 2y + 3[/tex]

Solve for [tex]y[/tex]:
[tex]x - 3 = 2y[/tex]
[tex]y = \frac{x - 3}{2}[/tex]

Replace [tex]y[/tex] with [tex]f^{-1}(x)[/tex]:
[tex]f^{-1}(x) = \frac{x - 3}{2}[/tex]

the probability of a loss is 0.6.

To find the probability of a loss, we first need to understand that in this context, the sum of all possible outcomes (win, draw, and loss) must equal 1.

Given:

- Probability of a win = 0.24

- Probability of a draw = 0.16

Let's denote the probability of a loss as [tex]\( P(\text{loss}) \).[/tex]

We know that:

[tex]\[ P(\text{win}) + P(\text{draw}) + P(\text{loss}) = 1 \][/tex]

So, to find [tex]\( P(\text{loss}) \),[/tex] we rearrange the equation:

[tex]\[ P(\text{loss}) = 1 - (P(\text{win}) + P(\text{draw})) \][/tex]

[tex]\[ P(\text{loss}) = 1 - (0.24 + 0.16) \][/tex]

[tex]\[ P(\text{loss}) = 1 - 0.4 \][/tex]

[tex]\[ P(\text{loss}) = 0.6 \][/tex]

Therefore, the probability of a loss is 0.6.

we have

[tex]f(x)=4x+8[/tex]

Step 1

Let

[tex]y=f(x)[/tex]

[tex]y=4x+8[/tex]

Step 2

exchanges the variable x for y and the variable y for x

[tex]x=4y+8[/tex]

Step 3

Isolate the variable y

[tex]4y=x-8[/tex]

[tex]y=\frac{1}{4}x-2[/tex]

Step 4

Let

[tex]h^{-1}(x)=y[/tex]

[tex]h^{-1}(x)=\frac{1}{4}x-2[/tex] ------> the inverse function

therefore

the answer is

[tex]h^{-1}(x)=\frac{1}{4}x-2[/tex]

The inverse of the function f(x) = 4x + 8 is h(x) = (x - 8) / 4.

The inverse of the function f(x) = 4x + 8 can be found by switching the x and y variables and solving for y. So, we have:

x = 4y + 8

Now, we rearrange the equation to isolate y:

x - 8 = 4y

y = (x - 8) / 4

Therefore, the inverse function is h(x) = (x - 8) / 4.