A pharmacist has 600 milliliters of a solution that is ​30% active ingredient. How much pure water should she add to the solution to get a solution that is 15​% active​ ingredient?

Answer:

90 cm3

Step-by-step explanation:

You multiply 2 by 5 which is 10, then by 9 and get 90 cm3

This is an experimental study.

This study demonstrates an experimental design, as the intervention (tutoring and study skills advice) was used to examine the impact it had on the test scores.

An experimental study is used to examine the effects of an intervention or treatment on a group of participants. In this case, the study involved two groups of algebra students, one of which was given additional help in the form of tutoring and study skills advice while the other was not. After a few weeks, the students took a test and the results of the two groups were compared. This study demonstrates an experimental design, as the intervention (tutoring and study skills advice) was used to examine the impact it had on the test scores.

This study demonstrates an experimental design, as the intervention (tutoring and study skills advice) was used to examine the impact it had on the test scores.

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Answer:

b = 9

Step-by-step explanation:

b + 4 = 13 Subtract 4 from both sides

b + 4 - 4 = 13 - 4

b = 9

Helping in the name of Jesus.

Answer:

m<P=130°

m<Q=130°

m<R=50°

Step-by-step explanation:

m<P=130

m<Q=130

m<R=50

The domain of the rational expression (6-x)/(4x+20) is all real numbers except x = -5.

To find the domain of a rational expression, we need to identify any values of x that would result in division by zero. Division by zero is undefined in mathematics
In this case, we need to set the denominator, 4x+20, equal to zero and solve for x:
4x + 20 = 0
Subtract 20 from both sides:
4x = -20
Divide both sides by 4:
x = -5
Therefore, the value x = -5 makes the denominator zero.
Now, we need to consider the values of x for which the denominator is not zero. Since the denominator is a linear expression (a polynomial of degree 1), it is defined for all real numbers except x = -5.
So, the domain of the rational expression (6-x)/(4x+20) is all real numbers except x = -5.

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Answer:

-1

Step-by-step explanation:

on edge

Answer:

-8/9

Step-by-step explanation:

if the 2 lines are parellel, they have the same slope

Answer:

let p(x)=180

LCM=720

HCF=36

WE HAVE TO FIND q(x)=?

as we know that

p(x)×q(x)=LCM×HCF

NOW WE HAVE TO FIND q(x)

q(x)=LCM×HCF/p(x)

q(x)=720×36/180

q(x)=25920/180

q(x)=144

i hope this will help you

Answer:

144

Step-by-step explanation:

HCF(a,b)*LCM(a,b)=ab

36*720=180*x

x= 36*720/180

x= 144

Answer:

Step-by-step explanation:

Let x^3 = y

f(x) = 27(x^3)^2 + 1524(x^3) + 125

f(x) = 27 y^2 + 1524y + 125

You can now put this into the quadratic formula. When you do, you get

(y + 0.0821)(y+56.3623) = 0

So now you substitute x^3 into this

(x^3 + 0.0821)(x^3 + 56.3623)

x^3 + 0.0821 = 0

x^3 = - 0.0821

cuberoot x^3 = cube root 0.0821

x = - 0.4346

x^3 = - 56.3623

x = - 3.8341

Answer:

6.oz and all other things are going on

Step-by-step explanation:

its been a few weeks and I've just got back to

Answer:

The answer is 56°. Angle B is an exterior angle of triangle ABC, which means it is equal to the sum of the two remote interior angles (angles A and C). Angle A is 35°, angle C is 121°, so angle B is 56°.

Answer: 4

Step-by-step explanation:

94,172

ten thousands, thousands, hundreds, tens, ones

According to the list of places, 4 is the thousand place in 94,172.

Hope this helps!! :)

Please let me know if you have any question

Answer: In this number, 4 is the thousands place.

Step-by-step explanation:

So we have to find the thousands place in this number:

94,172

Label it:

9                          4                       1                   7            2

ten thousands    thousands     hundreds     tens       ones

Therefore, 4 is the thousands place.

Hence, your answer.

Answer:

\(105m^3/min\)

Step-by-step explanation:

We are given that

Base side of square pyramid, a=3 m

Height of square pyramid, h=9m

\(\frac{da}{dt}=6m/min\)

\(\frac{dh}{dt}=-1/min\)

We have to find  the rate of change of the volume of the pyramid at that instant.

Volume of square pyramid, V=\(\frac{1}{3}a^2h\)

Differentiate w.r.t t

\(\frac{dV}{dt}=\frac{1}{3}(2ah\frac{da}{dt}+a^2\frac{dh}{dt})\)

Substitute the values

\(\frac{dV}{dt}=\frac{1}{3}(2(3)(9)(6)+(3^2)(-1)\)

\(\frac{dV}{dt}=105m^3/min\)

Hence, the rate of change of the volume of the pyramid at that instant=\(105m^3/min\)

1. Volume of pyramid= One third× volume of rectangular prism, V= l×w×h

So for pyramid, V= 1/3 (l×w×h) = (l×w×h) ÷ 3.

2. The volume of the cylinder is three times the volume of the cone or the volume of the cone is one third that of the cylinder.

3. Volume of the cone = One third of volume of the cylinder.

4. Sphere's volume is 2/3 of the Cylinder's volume.

Answered by GAUTHMATH

Answer:

Jasmine expected to get $150 for her bonus, but she only got $100. What was the percent error?

-----

Amt of error:: $50

----------

% error:: 50/150 = 1/3 = 33 1/3%

Answer:

5/6 OR 0.83 (with the three repeating)

Hope that helps!

Step-by-step explanation:

the answer is hakuna matata jk the answer is D

Answer:

$39.60

Step-by-step explanation:

33 * 1.2 = 39.60

To find the cost of Kate's video game, we first need to determine the 20% increase from Lori's video game, which costs $33.

To do this, we multiply $33 by 0.20, which gives us $6.60.

We then add this amount to the cost of Lori's game:

$33 + $6.60 = $39.60

Therefore, Kate's video game costs $39.60.

May I please have a Brainliest? I put a lot of thought and effort into my answers, so I would really appreciate it!

Answer:

Step-by-step explanation:

True:

- There are two variables

- 3 is the constant

- There are 3 terms in the expression

great questing but I don't know I just want my free answers lol

The circumference of a circle with a radius of 14 feet is 88 feet.

Every point in the surface of a circle, which is a circular, two-dimensional object, is evenly separated from the centre. All lines that cross the circle join together to produce the line of reflected symmetry. Each angle has axis of symmetry around the centre, in addition. Monitoring a linear interpolation in a surface while keeping a fixed distance from some other point will result in the closed shape of a circle. The English term circle derives from the Greek word curriculum provides students, which also means hoop or ring.

When we find the circumference, we obtain:

The  circumference( C) of a circle is 2πr.

C=2πr

⇒C=2×\(\frac{22}{7}\)×14=88 feet.

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The time series data should show a. trend b. cyclical c. seasonal, so the correct answer is d. all of the options are correct.

Time series data refers to a collection of data points that are measured over time at regular intervals. The time series data could refer to various metrics such as sales, revenue, foot traffic, website traffic, inventory levels, and other relevant business metrics that change over time.

By analyzing time series data, businesses can gain insights into trends, patterns, and other factors that can affect their operations.  

Time series can be used for forecasting. By analyzing past trends and patterns, businesses can make predictions about future performance and take proactive measures to achieve their goals.  

Since the time series will follow the trend, have multiple choices, and will be cyclical and it will analyze the patterns over time periods seasonally.

Therefore,

The time series data should show a. trend b. cyclical c. seasonal, so the correct answer is d. all of the options are correct.

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Answer:

Step-by-step explanation:

Arrange your numbers in numerical order.

Count how many numbers you have.

If you have an odd number, divide by 2 and round up to get the position of the median number.

If you have an even number, divide by 2. Go to the number in that position and average it with the number in the next higher position to get the median.

We must analyze the percent to find the solution.

The amount lost by 9%, refers to the original amount minus 9% percent.

The amount lost would be:

original amount * 0.09

Answer:

Step-by-step explanation:

is a rectangle bisected by the diagonal forming two congruent right triangles, so AD = BC and AB = CD

Area = 1/2 b * h

Area =1/2 7 * 4

Area = 3.5 * 4

Area = 14 in²

So we have 7 in. and 4 in. so we just will mutilply It, So what we do here Is mutilply so we will do 7 x 4 = 28

So we have 28 then we mutilpy all of chocies to see which one Is 28.

A rectangle bisected by the diagonal forming two congruent right triangles, so AD = BC and AB = CD

11 x 2=22 ❌ Not 28                                      

14 x 2 = 28 ✅ Is 28                                                                                                                                                            

22 x 2 = 44  ❌ Not 28

28 x 2 = 56  ❌ Not 28

A rectangle bisected by the diagonal forming two congruent right triangles, so AD = BC and AB = CD

Area = 1/2 b * h ❌

 Area = 3.5 * 4  ❌            

 Area = 3.5 * 4  ❌      

 Area = 14 in²   ✅

The cost of the 28 inches and 36 inches diagonal Smart TVs, based on the quadratic cost function are;

28 - inch diagonal; $134

36 - inch diagonal; $165

A quadratic function is a function of the form f(x) = a·x² + b·x + c, where a ≠ 0, and a, b, and c are numbers.

The cost of the Smart TV as a function of the diagonal length is C(d) = 0.322·d² - 16.776·d + 351.444

The above function indicates that the cost of a Smart TV that is 28 inches long is; C(28) = 0.322 × 28² - 16.776 × 28 + 351.444 ≈ 134

The cost of a Smart TV with a diagonal of 36 inches is therefore;

C(36) = 0.322 × 36² - 16.776 × 36 + 351.444 ≈ 165

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Answer:

c. y=-x+2

Step-by-step explanation:

since the slope is -1 and the y-intercept is 2, you can plug those numbers into the equation and get y=-x+2.