Jose conducted an experiment to measure the rate of minerals dissolving in water and changed the temperature of the water for each trial.
What is the independent variable in this experiment?


A: number of trials being tested

B: temperature of the water

C: type of minerals used for each trial

D: rate the minerals dissolved

Answer:

262.50

Step-by-step explanation:

350 x .25 (25 %)=87.50

350-87.50=262.50

or

350x.75=262.50

Answer:

BC = 20

Step-by-step explanation:

AC = AB + BC

28 = x-10 + x+2

Combine like terms

28 = 2x -8

Add 8 to each side

28+8 = 2x-8+8

36 = 2x

Divide by 2

36/2 = 2x/2

18 =x

We want to find BC

BC = x+2

     =18+2

     =20

Answer:

BC = 20

Step-by-step explanation:

Since line segment AC = 28, that means line segment AB and line segment BC must add up to 28:

x - 10 + x + 2 = 28

2x - 8 = 28

2x = 36

x = 18

Now we plug in x into segment BC's equation to find length of BC:

BC = x + 2

BC = 18 + 2

BC = 20

Answer:

B

Step-by-step explanation:

To find how many hours she worked you must divide $65 by $5 and B is the only equation where you can do that.

Let \(\vec K,\vec L,\vec M,\vec N\) be vectors pointing the vertices K, L, M, and N, respectively.

The side KL is parallel to and has the same length as the vector

\(\vec L - \vec K = (2\,\vec\imath + 3\,\vec\jmath + 3\,\vec k) - (2\,\vec\imath+2\,\vec\jmath+\vec k) = \vec\jmath + 2\,\vec k\)

Similarly, the side KN is parallel and as long as

\(\vec N - \vec K = (6\,\vec\imath+8\,\vec\jmath+\vec k) - (2\,\vec\imath+2\,\vec\jmath+\vec k) = 4\,\vec\imath+6\,\vec\jmath\)

These vectors have magnitudes

\(\|\vec L - \vec K\| = \sqrt{0^2 + 1^2 + 2^2} = \sqrt5\)

\(\|\vec N - \vec K\| = \sqrt{4^2 + 6^2 + 0^2} = 2\sqrt{13}\)

and their dot product is

\((\vec L - \vec K) \cdot (\vec N - \vec K) = 0\cdot4 + 1\cdot6+1\cdot0 = 6\)

The parallelogram spanned by the vectors \(\vec L-\vec K\) and \(\vec N-\vec K\) has area equal to the magnitude of their cross product, for which we have the identity

\(\bigg\|(\vec L - \vec K) \times (\vec N - \vec K)\bigg\| = \|\vec L - \vec K\| \|\vec N - \vec K\| \sin(\theta) \\\\ \implies \text{area} = 2\sqrt{65} \, \sin(\theta)\)

where \(\theta\) is the angle between the sides KL and KN.

From the dot product identity, we have

\((\vec L - \vec K) \cdot (\vec N - \vec K) = \|\vec L - \vec K\| \|\vec N - \vec K\| \cos(\theta) \\\\ \implies 6 = 2\sqrt{65} \cos(\theta)\)

Then

\(\cos(\theta) = \dfrac3{\sqrt{65}} \implies \sin(\theta) = \sqrt{1-\cos^2(\theta)} = 2\sqrt{\dfrac{14}{65}} \\\\ \implies \text{area} = 2\sqrt{65} \cdot 2\sqrt{\dfrac{14}{65}} = \boxed{4\sqrt{14}}\)

To factor completely the expression −2x³ + 6x², we can follow the below steps:Step 1: Take out common factor −2x². -2x²(x − 3)Step 2:

The obtained expression −2x²(x − 3) is already factored completely.

Step 3: The given expression −2x³ + 6x² can be written as −2x²(x − 3) as obtained in

step 1. Thus, −2x³ + 6x² = −2x²(x − 3)The expression −2x³ + 6x² can be factored completely as −2x²(x − 3).

The obtained expression is already factored completely, and therefore the prime factorization of the given expression is −2x²(x − 3). Hence, the answer is: −2x²(x − 3).

This is a complete and comprehensive solution that includes more than 100 words.

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Answer:

84 or 90 i say 90

Step-by-step explanation:

thses are the closest ones

Answer:

The answer is 9

Step-by-step explanation:

The answer is 9

Answer:

Numbers that can be expressed as a ratio of two number (p/q form) are termed as a rational number. Numbers that cannot be expressed as a ratio of two numbers are termed as an irrational number.

Step-by-step explanation:

please make my answer as brainelist

Answer:

ABCD has congruent diagonals.

ABCD is a rhombus.

ABCD has four congruent angles

Step-by-step explanation:

The following statements would be considered true

1. The quadrilateral ABCD could have the congruent diagonals as the diagonals are perpendicular

2. ABCD would be treated as the rhombus as it is a  regular quadrilateral

3. ANd, It Have the four congruent angles that means the four angles be 90 degrees

The other statements would be false.

Answer:

A,B,E

Step-by-step explanation:

Edge 2021

Answer:

(x,y,z)=(1400, 4200,14000)

Step-by-step explanation:

x*85+3*x*55+y*30=770.000

x+3x+y=19600

250x+30y=770.000

4x+        y=19600         /*-30

250x +30y= 770 000

-120x -30y= - 588.000

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

250x-120x  = 182 000

130 x= 182000

x=182000/130

section A   x=1400 seats

section B    3x=3*1400=4200 seats

section C   y=19600-4*1400=19600-5600=14000 seats

9514 1404 393

Answer:

Step-by-step explanation:

Any terminating decimal number in the desired range will be rational. 6.08 for example.

Any of the infinite number of non-terminating decimals in that range will be irrational. √37 ≈ 6.08376253029821968899968... is an example.

As it happens, the square root of the non-square integer 37 is in that range, so we have selected it for the irrational number.

Answer:

n - 10

Step-by-step explanation:

10 is less than n so subtract 10 from n

Answer:

$850×5.7/100=48.45

850+48.45=898.45

898

Answer: 1197

Step-by-step explanation:

Answer:

x=17

Step-by-step explanation:

So the outside angle is basically is an addition of the two angles given to you. 60°+2x°=94°.

dont gggggggggggggggggggggggggggggggggggggggggggg

Step-by-step explanation:

sorry but your image is not clear can you send a clearer one. thanks

Answer:

Step-by-step explanation:

The ratio of boys to girls is 3: 2:

Total number of students:

The ratio of girls to all students:

Total students in ratio =3+2=5

Girls: students

Step-by-step explanation:

solution file attached

Answer:             5

Step-by-step explanation: because

Answer: The amount in the new balance column represents the amount of credit that Sheldon is currently using. If the credit line on Sheldon's card is $5,000, Sheldon's current available credit is $4,642.18.

Step-by-step explanation:

There are 2 methods of solving this problem.

First method:

So, first before you do this problem, you're going to need this formula:

Available Credit = Credit Line - New Balance

Available Credit = $5,000.00 - $357.82

Subtract that, & you get $4,642.18.

Second Method:

So for the second method I subtracted each of the answers in the 2nd blank by the Credit Line, which in this case it's $5,000.00.

$5,000.00 - $3,477.98 = $1,522.02 (❌)

$5,000.00 - $4,642.18 = $357.82 (✔️)

$5,000.00 - $4,760.50 = $239.50 (❌)

So, the amount in the new balance column represents the amount of credit that Sheldon is currently using. If the credit line on Sheldon's card is $5,000, Sheldon's current available credit is $4,642.18.

To construct the graph of the hyperbola, the procedure is as follows:

The equation of a vertical hyperbola with center (x*, y*) is given according to the following equation:

(y - y*)²/a² - (x - x*)²/b² = 1.

A vertical hyperbola opens up and down.

In this problem, the equation is:

(y + 2)²/36 - (x + 5)²/64 = 1.

Hence the center is:

(-5, 2).

The value of coefficient a is:

a² = 36 -> a = 6.

Then the vertices of the hyperbola are:

The slopes of the asymptotes of the parabola are given as follows:

±a/b.

Hence:

Since the asymptotes pass through the center, the equation is:

y - 2 = ± 3/4(x + 5).

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If a negative relation exists between two variables, low scores on one variable will be associated with high scores on the other variable.

In a negative relationship between two variables, a decrease in one variable is accompanied by an increase in the other variable. This means that as scores on one variable decrease (i.e., low scores), the scores on the other variable tend to increase (i.e., high scores). The negative relationship implies an inverse pattern where the variables move in opposite directions.

The exact nature and strength of the negative relationship can vary, but the general trend is that low scores on one variable correspond to high scores on the other variable. This negative association provides insights into the behavior and interactions between the variables being examined.

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Using the normal distribution, it is found that 4.18% of the students who took the SAT math test meet this requirement.

The z-score of a measure X of a normally distributed variable that has mean given by \(\mu\) and standard deviation represented by \(\sigma\) is by the following equation:

\(Z = \frac{X - \mu}{\sigma}\)

The mean and the standard deviation for the distribution of SAT scores is given as follows:

\(\mu = 528, \sigma = 117\)

The proportion above 730 is given by one subtracted by the p-value of Z when X = 730, hence:

\(Z = \frac{X - \mu}{\sigma}\)

Z = (730 - 528)/117

Z = 1.73

Z = 1.73 has a p-value of 0.9582.

1 - 0.9582 = 0.0418.

Hence 4.18% of the students who took the SAT math test meet this requirement.

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The slope of a line that passes through the points is 3

A slope is defined as the ratio of rise to run of a line. It is expressed according to the formula below;

Slope = rise/run

Slope = y₂-y₁/x₂-x₁

Using the coordinate points (1, 3) and. (2, 6), the slope is expressed as:

Slope = 6-3/2-1

Slope = 3/1

Slope = 3

Hence the slope of a line that passes through the points is 3

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The present value of $8,848 annual payments over the next 5 years at an interest rate of 10% is approximately $33540.88.

The present value of an annuity is a measure of its worth today, taking into account the time value of money and the rate of interest. To calculate the present value, each future payment is discounted back to the present day.

In this case, with an interest rate of 10%, each $8,848 payment is worth less in today's dollars the further out it is made. The present value of these payments over the next 5 years would be the sum of the present value of each payment, which is approximately $33540.88.

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Answer:

The selling price of the bag is $22.5

Step-by-step explanation:

Buying Price = $25,

Selling Price = ?

Since they sold it at a loss of 10%,

So, they sold it for a price 10% less than the buying price,

or at 90% or 0.9 of the buying price,

so,

Selling Price = (0.9)(25) = $22.5

Answer: the only line crossed is called a transversal line. x +3 would be vertically opposite to the other angle,and 2x-61 would also be vertically opposite. if you look at alternate and corresponding angles you would find the exact answer. this angle does not have a kind i guess.

hope it helps you!!!

Step-by-step explanation:

Answer:

h = 9

Step-by-step explanation:

You can use the Pythagorean theorem to solve this.  Consider each half of the main triangle their own triangles.  

h = a

a^2 + b^2 = c^2

or

a^2 = c^2 - b^2

a^2 = 10^2 - 5^2

a^2 = 100 - 25

a^2 = 75

a = √75

a = 8.66, or 9

h = 9 (when rounded)

The value of B from the vector b = 2i + Bj is B = 1.5

What is the product of vectors?

The dot product, or inner product, of two vectors, is the sum of the products of corresponding components. Equivalently, it is the product of their magnitudes, times the cosine of the angle between them . The dot product , also known as the inner product, of u and v to be the number u ⋅ v given by

u ⋅ v = u₁v₁ + u₂v₂ + u₃v₃

An equivalent definition is

u ⋅ v = ∣u∣ ∣v∣ cos θ,

where θ is the angle between u and v

Two nonzero vectors are perpendicular, or orthogonal, if and only if their dot product is equal to zero

Given data ,

Let the first vector be A

The value of A is

A = 3i - 4j

Let the second vector be B

The value of B is

B = 2i + bj

Now , the angle between the two vectors is 90°

So , the two nonzero vectors are perpendicular, or orthogonal, if and only if their dot product is equal to zero

Substituting the values in the equation , we get

A.B = ( 3i - 4j ) . ( 2i + bj ) = 0

On simplifying the equation , we get

3 ( 2 ) - 4 ( b ) = 0

6 - 4b = 0

Adding 4b on both sides of the equation , we get

6 = 4b

Divide by 4 on both sides of the equation , we get

b = 6/4

b = 1.5

Therefore,  the value of b is 1.5

Hence , the value of b in the vector 2i + bj is b = 1.5

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Answer:

Step-by-step explanation:

20: