-6 + -4 hellpppppppp

For the transformation at -78 °C, appropriate reagents include lithium aluminum hydride (LiAlH4) and diethyl ether.

At -78 °C, certain chemical reactions require the use of specific reagents to achieve the desired transformation. One commonly used reagent is lithium aluminum hydride (LiAlH4), which acts as a strong reducing agent. It is capable of reducing various functional groups, such as carbonyl compounds, to their corresponding alcohols.

Diethyl ether is typically employed as a solvent to facilitate the reaction and ensure efficient mixing of the reactants. Researchers often utilize this low temperature for reactions involving sensitive or reactive intermediates, as it helps control the reaction and prevent unwanted side reactions.

The use of LiAlH4 and diethyl ether provides a reliable combination for achieving the desired transformation at this temperature, enabling chemists to manipulate and modify compounds in a controlled manner.

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Given that, Katie has four grape candies and 3 cherry candies.

Thus, the total number of candies is 7.

Calculate the ratio of grape candies to total number of candies.

Therefore, ratio is 4:7.

With an interest rate of 3% compounded continuously and an initial deposit of $15,000, the amount of money in the account after 20 years would be approximately $27,322.80.

Using the formula for continuous compound interest:

A = P * e^(rt)

Where:

A = the amount of money in the account after the given time period

P = the initial deposit amount

e = the mathematical constant approximately equal to 2.71828

r = the interest rate (expressed as a decimal)

t = the time period (in years)

Let's assume an interest rate of 3% (0.03) compounded continuously and an initial deposit of $15,000. We can calculate the amount of money in the account after 20 years:

A = $15,000 * e^(0.03 * 20)

Using a calculator, we can evaluate the expression:

A ≈ $15,000 * e^(0.6)

A ≈ $15,000 * 1.82212

A ≈ $27,322.80

Therefore, with an interest rate of 3% compounded continuously and an initial deposit of $15,000, the amount of money in the account after 20 years would be approximately $27,322.80.

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Answer:

I got -5/6

Step-by-step explanation:

Y2-Y1/X1-X2

So -3-2/5-(-1) =-5/6

I hope this is the right answer  :)

Answer:

x=-1 y=5

Step-by-step explanation:

A. 4x+y=1 multiply the equation negative 2

B. x+2y=9

-8x-2y=-2 add this to equation b

x+2y=9

-7x=7 divide both sides by -7

x=-1

now substitute x for -1 in either of the original equations

-4+y=1 add 4 to both sides

y=5

-4+5=1

-1+10=9

Answer: a

Step-by-step explanation: thanks for being my friend and sorry if im wrong

Answer:

( -1,2)

Step-by-step explanation:

The solution is where the two lines intersect

The intersect at x=-1 and y=2

( -1,2)

Answer:

Below

Step-by-step explanation:

● y = 2

● x = -1

Graph both equation

The solution is the intersection point coordinates

Both lines intersect at ( -1,2)

So the solutions are:

● y = 2

● x = -1

Answer:

The surface area is 174 cm^2

Step-by-step explanation:

Since we have the area of each of the faces, to get the total area, we will need to add up the areas of all these faces

Thus, we have that;

A = 45 + 27 + 45 + 15 + 15 + 27

A = 174 cm^2

According to the survey, 60% of the respondents (or 0.60(1500)) believed that marijuana should be made legal.

The 2010 general survey asked 1500 U.S. residents whether they think the use of marijuana should be made legal or not. According to the survey, 60% of the respondents (or 0.60(1500)) believed that marijuana should be made legal.

The 2010 general survey asked 1500 U.S. residents whether they think the use of marijuana should be made legal or not.

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The area under the standard normal distribution curve between z = 2 - 0.69 and z = 2 - 1.14 is approximately 0.1701.

To calculate this area, we first need to understand the standard normal distribution and the concept of z-scores. The standard normal distribution is a specific form of the normal distribution with a mean of 0 and a standard deviation of 1. A z-score represents the number of standard deviations a data point is away from the mean.

In this case, we are given two z-scores: z = 2 - 0.69 and z = 2 - 1.14. By subtracting 0.69 and 1.14 from 2, we are effectively shifting the distribution to the right. To find the area between these two z-scores, we consult the Standard Normal Distribution Table (also known as the Z-table). This table provides the cumulative probability up to a given z-score.

By looking up the values for z = 2 - 0.69 and z = 2 - 1.14 in the table, we can determine the corresponding cumulative probabilities. Subtracting the smaller cumulative probability from the larger one gives us the desired area under the curve. In this case, the area is approximately 0.1701, rounded to four decimal places.

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Answer:

Coordinates for Q' Option (A) : (-5, 2)

The interaction degrees of freedom is 35. The closest answer is option (b).

ANOVA (Analysis of Variance) is a statistical method used to analyze the differences among group means and their associated variances. It is an hypothesis testing technique that determines whether the means of two or more groups are significantly different from each other.

Going back to our question:

The interaction degrees of freedom for an ANOVA with two factors is given by:

df(interaction) = (a-1) x (b-1)

where a and b are the number of levels of factors A and B, respectively.

Substituting a = 8 and b = 6, we get:

df(interaction) = (8-1) x (6-1) = 7 x 5 = 35

Therefore, the interaction degrees of freedom for this ANOVA is 35.

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Answer:

it c

Step-by-step explanation:

it well retun but it L to q but P in the way so that answer wod be c

Answer:

4! am i right or am i right Owo

Step-by-step explanation:

Let b be a matrix with two columns in ℝ2. The matrix b can be written as [b1, b2]. Let I be a 2 × 2 identity matrix, then we want to find a change-of-coordinates matrix C from b to I.Let the matrix C be [c1, c2]. Then we have cb1 = Ic1 and cb2 = Ic2.

The matrix C can be computed as follows: [c1, c2] = [b1, b2][c1, c2] = [I, I][c1, c2] = [b1, b2][I, I][c1, c2] = b[I, I]⁻¹[c1, c2] = b[c1, c2]⁻¹We can see that the matrix [I, I] is the matrix whose columns are the standard basis vectors for ℝ2. Hence, we need to compute the inverse of [b1, b2].Let A be the 2 × 2 matrix whose columns are the two columns of b. We have A = [−4, 4; 1, −2]. To find A⁻¹, we can use the formula for the inverse of a 2 × 2 matrix:[A⁻¹] = 1/(ad − bc)[[d, −b], [−c, a]]where a, b, c, and d are the entries of A.

Plugging in the values for A, we haveA⁻¹ = 1/(−4(−2) − 4(1))[[−2, −4], [−1, −4]] = [[1/2, 1], [1/8, 1/2]]Therefore, the matrix C from b to the standard basis in ℝ2 is given by[C] = [b⁻¹] = [[1/2, 1], [1/8, 1/2]] and this has more than 100 words.

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Answer:

D

Step-by-step explanation:

-3 2/3 * -2 1/4

~Turn into improper fractions

-11/3 * -9/4

~Multiply both numerators and denominators

99/12

~Turn into a mixed number

8 3/12

~Simplify

8 1/4

Best of Luck!

Answer:

8  1/4

Step-by-step explanation:

Simplify the expression.

Exact Form:

33/4

Decimal Form:

8.25

Mixed Number Form:

8  1/4

Hope This Helps Please Mark Brainliest

Answer:

It should be 60 degrees

Step-by-step explanation:

Answer:

chef salads = $2

turkey sandwiches = $1

Step-by-step explanation:

two equations can be derived from the question

13t + 69c = 151 eqn 1

61t + 41c = 143 eqn 2

t = turkey sandwiches

c = chef salads

multiply equation 1 by 61 and equation 2 by 13

793t + 4209c = 9211 eqn 3

793t + 533c = 1859 eqn 4

subtract equation 4 from 3

7352 = 3676c

c =2

substitute for c in equation 1

13t + 69(2) = 151

13t + 138 = 151

13t = 151 - 138

13t = 13

t = 1

Answer:

7x+4= 8-3x

Step-by-step explanation:

Answer:

4×10^5

Step-by-step explanation:

Divide (8×10^20) by (2×10^15). Then express the answer you obtain in standard form.

Answer:

x - 3y = 8.

Step-by-step explanation:

Use the point-slope form of the equation of a line:

y - y1 = m(x - x1)  where m = the slope and (x1, y1) is a point on the line.

So substituting the given values:

y - (-2) = 1/3(x - 2)

y + 2 = 1/3x - 2/3     Multiply through by 3:

3y + 6 = x - 2

x - 3y  =  6 + 2

x - 3y = 8  <---- Standard Form.

Answer:

x = 15

Step-by-step explanation:

Because PQ is parallel to JL,  \(\frac{KP}{PJ} = \frac{KQ}{QL}\)

Substituting, we have \(\frac{x-6}{3} = \frac{x}{5}\)

5(x-6) = 3x

5x - 30 = 3x

2x = 30

x = 15

Answer:

x = 15

Step-by-step explanation:

Because PQ is parallel to JL,  

Substituting, we have

5(x-6) = 3x

5x - 30 = 3x

2x = 30

x = 15

Answer:

No

Step-by-step explanation:

Originally:

48:42

If some leave and some arrive = 10:11 given in question

So 48- 8 leave = 40 women

Therefore 42+2=44

Now the ratio is 40:44 (Actual amount of people)

When you simplify/ divide by 4 = 10:11

Total amount of people is 40+44= 84 which is less than 90

We want to find the value of a sum, given that we need to remove some values of that given sum.

We will see that the value of the sum is  6.471

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

We start with the sum:

S = 1 + 2 + 3 + ... + 150

And we want to remove all the multiples of 3 and 7.

To do that, we need to find the values of k and c such that

3*k = 150

k = 150/3 = 50

Then we have 50 multiples of 3 in that sum that must be removed.

Now we can do the same for the multiples of 7:

7*c = 150

c = 150/7 = 21.4

Rounding to the next whole number we get 21, meaning that there are 21 multiples of 7 in that sum (where the multiples of 7 and 3 together are counted twice, so we need to add them again)

Then the sum will be:

S = 1 + ... + 150 - 3*(1 + ... + 50) - 7*(1 + ... + 21) + 7*(3 + 6 + 9 + 12 + 15 + 18 + 21)

Now we just need to perform that sum, we will get:

S = 11,325 - 3*1275 - 7*231 + 588 = 6,471

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To convert 3 and 1/2 cups to fluid ounces, we need to multiply the number of cups by the conversion factor of 8. This is because there are 8 fluid ounces in a cup. So, 3 and 1/2 cups multiplied by 8 gives us the answer of 28 fluid ounces.

The U.S. customary system of measurement uses cups and fluid ounces to measure liquids. A cup is a unit of volume, while a fluid ounce is a unit of weight that is equivalent to the volume of 1 ounce of water.

To convert from cups to fluid ounces, we need to know the conversion factor between the two units. In this case, the conversion factor is 8, which means that there are 8 fluid ounces in 1 cup.

To convert 3 and 1/2 cups to fluid ounces, we simply multiply the number of cups by the conversion factor of 8.

3 and 1/2 cups x 8 fluid ounces/1 cup = 28 fluid ounces

Therefore, 3 and 1/2 cups is equivalent to 28 fluid ounces.

It's important to note that when working with conversions between units, it's essential to keep track of the units and cancel them out as needed. In this case, we multiplied cups by the conversion factor of fluid ounces per cup, which resulted in our answer in fluid ounces.

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The degrees of freedom (df) is 27, the critical values are χL² = 45.722 and χR² = 3.682, and the confidence interval estimate of σ is (2508.84, 19315.91).

1. Degrees of freedom (df):

The degrees of freedom can be calculated using the formula:

df = n - 1

  = 28 - 1

  = 27

Therefore, the degree of freedom is 27.

2. Critical values:

The critical values can be obtained from the Chi-Square distribution table.

For a 99% confidence interval, we need to find the critical values at α/2 and 1 - α/2 significance levels.

Using the table, we find:

χ²(0.005, 27) ≈ 45.722 (left-tail critical value at α/2)

χ²(0.995, 27) ≈ 3.682 (right-tail critical value at 1 - α/2)

Hence, the critical values are χL² = 45.722 and χR² = 3.682.

3. Confidence interval estimate of σ:

The confidence interval estimate of σ can be calculated using the formula:

((n - 1)s² / χL², (n - 1)s² / χR²)

Substituting the given values:

((27)(65.4²) / 45.722, (27)(65.4²) / 3.682)

= (2508.84, 19315.91)

Therefore, the confidence interval estimate of σ is (2508.84, 19315.91).

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The angle measure from the ruler in this problem is given as follows:

63º.

The angle measure in the context of this problem is obtained using the ruler, which gives an angle measure between 0º and 180º, according to the arrow of the ruler.

The ruler is positioned between 60 and 70, three dots of the way, hence we apply the proportion to obtain the angle measure as follows:

60 + 3/10(70 - 60) = 63º.

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The total number of ways in which 4 questions can be answered if the first 2 questions have 3 choices and the last 3 have 4 choices = 144 + 192 = 336

We are given;

Total number of objective questions = 5 questions

Number of choices of first 2 questions = 3 choices

Number of choices of last 3 questions = 4 choices

Number of ways of answering the first 2 questions = 3 * 3 = 9 ways

Number of ways of answering the last 3 questions = 4 * 4 * 4 = 64 ways

Total number of ways of answering the five questions = 9 * 64 = 576 ways

Now, she has to answer only 4 which means it can be either 2 of the first and 2 of the last of 1 of the first and 3 of the last.

Thus, total number of ways of answering 4 questions if it is fist 2 and last 2 = 9 * 16 = 144

Total number of ways of answering 4 questions if 1 of the first and 3 of the last = 3 * 64 = 192

The total number of ways in which they can be answered if the first 2 questions have 3 choices and the last 3 have 4 choices = 144 + 192 = 336

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Your current monthly income, before the effect of inflation, is approximately $2,129.63.

To determine your current monthly income, we need to account for the effect of inflation on the purchasing power of your income. Given that the inflation rate is eight percent, we can calculate the original income before the inflation adjustment.

Let's denote your current monthly income as "X."

The purchasing power after accounting for eight percent inflation is $2,300. This means that your original income, before the inflation adjustment, would have had a higher value. We need to find this original income.

Inflation reduces the purchasing power of your income, so we need to increase the current purchasing power by the inflation rate to find the original income. In this case, we'll increase $2,300 by eight percent:

Original Income = $2,300 / (1 + 0.08)

Original Income = $2,300 / 1.08

Original Income ≈ $2,129.63

Therefore, your current monthly income, before the effect of inflation, is approximately $2,129.63.

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The ratio of corresponding sides for the given similar triangles is 2/5.

In the given options, the ratio of corresponding sides is provided for each set of similar triangles. Let's analyze each option to determine the correct ratio:

a. 10

This option only provides a single number and does not specify the ratio of corresponding sides. Therefore, it is not the correct answer.

b. 4/5

This option provides the ratio 4/5 for the corresponding sides of the similar triangles. However, the ratio can be simplified further.

To simplify the ratio, we divide both the numerator and denominator by their greatest common divisor (GCD). In this case, the GCD of 4 and 5 is 1.

Dividing 4 and 5 by 1, we get:

4 ÷ 1 = 4

5 ÷ 1 = 5

Therefore, the simplified ratio is 4/5.

c. 10/85

This option provides the ratio 10/85 for the corresponding sides of the similar triangles. However, this ratio cannot be simplified further, as 10 and 85 do not have a common factor other than 1.

Therefore, the correct ratio of corresponding sides for the given similar triangles is 2/5, as determined in option b.

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