In an experiment to study the effect of temperature (x) on the yield of a chemical reaction (y), 30 experimental runs were conducted. The level of temperature was carefully controlled at each of five levels, coded as x = -2, -1, 0, 1, 2. Two catalysts were used. For each catalyst three runs were taken at each level of temperature, and the yield was measured. The model y = beta_0 + beta_1x + beta_2x^2 + beta_3z + epsilon, epsilon ~ N(0, sigma^2) was considered, where z = 0 for catalyst 1 and z = 1 for catalyst 2. a. Carefully interpret the parameter beta_3 in this model. b. The model was fit to the data and the output is summarized below. The residual sum of squares is 25.05, and Is there any evidence of a difference in the two catalysts? Find a 95% confidence interval for beta_2. c. We also know that (X'X)^-1 = [0.114 0 -0.023 -0.067 0 0.017 0 0 -0.023 0 0.012 0 -0.067 0 0 0.133] i. Explain why ^beta_1and ^beta_3 are independent random variables. ii. Find a 95% confidence interval for the expected yield when the standard temperature (x = 0) and catalyst 2 are used. iii. Find a 95% prediction interval for the yield of a new experiment run under standard temperature (x = 0) and with catalyst 2.

From the side/angle inequality, we see that the smallest angle of a triangle must be opposite its shortest side. In this case, that angle is opposite the shortest side [tex]\overline{AC},[/tex] so our answer is [tex]\boxed{\angle B}.[/tex]

As for finding its measure (which I'm aware the question probably didn't ask for), we can use the law of cosines:

[tex]5^2=6^2+7^2-2(6)(7)\cos B[/tex]

[tex]\cos B=\frac{5}{7}\implies\angle B\approx\boxed{44.4^\circ}.[/tex]

Answer:

Smallest Angle in the triangle is angle c.

Answer:

6-16y

Step-by-step explanation:

Distribute, 2 x 3 and 2 x 8

6-16y

Answer:

60

Step-by-step explanation:

=> 10+10+10-10+10+10+10+10

=> 30-10+40

=> 20+40

=> 60

Answer:

60

Step-by-step explanation:

10+10+10-10+10+10+10

Answer:

Probability that the sample mean would be greater than 141.4 millimetres is 0.3594.

Step-by-step explanation:

We are given that Thompson and Thompson is a steel bolts manufacturing company. Their current steel bolts have a mean diameter of 141 millimetres, and a standard deviation of 7.

A random sample of 39 steel bolts is selected.

Let [tex]\bar X[/tex] = sample mean diameter

The z score probability distribution for sample mean is given by;

                            Z  =  [tex]\frac{ \bar X-\mu}{\frac{\sigma}{\sqrt{n} } } }[/tex]  ~ N(0,1)

where, [tex]\mu[/tex] = population mean diameter = 141 millimetres

           [tex]\sigma[/tex] = standard deviation = 7 millimetres

           n = sample of steel bolts = 39

Now, Percentage the sample mean would be greater than 141.4 millimetres is given by = P([tex]\bar X[/tex] > 141.4 millimetres)

      P([tex]\bar X[/tex] > 141.4) = P( [tex]\frac{ \bar X-\mu}{\frac{\sigma}{\sqrt{n} } } }[/tex] > [tex]\frac{141.4-141}{\frac{7}{\sqrt{39} } } }[/tex] ) = P(Z > 0.36) = 1 - P(Z [tex]\leq[/tex] 0.36)

                                                            = 1 - 0.6406 = 0.3594

The above probability is calculated by looking at the value of x = 0.36 in the z table which has an area of 0.6406.

Answer:

No

Step-by-step explanation:

The longest side of a triangle must be less than the sum of the shorter two sides.

3 + 8 = 11.  13 is not less than 11.  So it is not possible for a triangle to have these sides.

Answer:

On a coordinate plane, a step graph has horizontal segments that are each 1 unit long. The left end of each segment is a closed circle. The right end of each segment is an open circle. The left-most segment goes from (negative 3, negative 5) to (negative 2, negative 5). Each segment is 1 unit higher and 1 unit farther to the right than the previous segment. The right-most segment goes from (4, 2) to (5, 2).

Step-by-step explanation:

The floor function graphs as horizontal segments 1 unit long, each 1 unit up from the segment to its left. It will have a closed circle at the left end of the segment, and an open circle at the right end.

Since 2 is subtracted from the floor of the x-value, the closed circle at the left end of the segment will have coordinates (x, x-2). The only offered choice meeting that condition is the 3rd choice listed here.

Answer:

c on edge

Step-by-step explanation:

I js did it tbh

Answer:

4.6 x 10^7

Step-by-step explanation:

Answer:

B

Step-by-step explanation:

Answer:

4x^2 +5x -21

Step-by-step explanation:

(x+3) * (4x-7)

FOIL

first : x*4x = 4x^2

outer: -7x

inner: 3*4x =12x

last: -7*3 = -21

Add them together : 4x^2 -7x+12x -21

Combine like terms : 4x^2 +5x -21

Answer:

The park owners should take into account the population of children in the community, if there are a good number of kids living in that area and the towns nearby - there would be a great demand for another roller coaster. They should consider the safety measures on the particular roller coaster they intend to add and check for the available space where they plan to fit the ride in the park.

Hope that answers the question, have a great day!

Answer:

cos34°

sin56°

Step-by-step explanation:

Sin(2x+42)= sin90-(3x+13)

Sin(2x+42) = sin(90-13-3x)

Sin(2x+42) = sin(77-3x)

2x + 42 = 77-3x

5x. = 35

X = 7

If x = 7

cos(3x+13) = cos((3*7)+13)

cos(3x+13) = cos(21+13)

cos(3x+13)= cos34

And

sin(2x+42) = sin((2*7)+42)

sin(2x+42)= sin (14+42)

sin(2x+42) = sin56

Answer:

the answer for the question is 25 and 26

Answer:

y = 1/x+2 + 3

Step-by-step explanation:

x = -2

y = 3

Answer:

3/20

Question:

A farmer plants corn in 1/4 of his field. He plants white corn in 3/5 of the corn

section of his field. This situation is shown in the model. What fraction of the whole field is planted with white corn

Step-by-step explanation:

Portion of the field planted with corn = 1/4

Total corn planted = 1/4 of field

Portion of the corn section planted with white corn = 3/5

Total white corn planted = 3/5 of corn section

We need to find the portion of the total field planted with white corn

The fraction of the whole field planted with white corn would be the product of the fraction of Total corn planted and fraction of Total white corn planted

= 1/4 × 3/5

= 3/20

The fraction of the whole field planted with white corn = 3/20

Answer:

D. Logical Fallacies

Step-by-step explanation:

Let's break this down:

fallacy: A false or mistaken idea.

By this definition, we can see that "false" would go with the word "faulty". A logical Fallacy is is a false or mistaken idea that's intended to sound logical. I hope this helps you!!

Answer:

-15

Step-by-step explanation:

g(x) = -4x + 5, find g(5)

Let x = 5

g(5) = -4*5 +5

      = -20 +5

     = -15

Answer:

It's position at time t = 5 is 593.

Step-by-step explanation:

The velocity v(t) is the integral of the acceleration a(t)

The position s(t) is the integral of the velocity v(t)

We have that:

The acceleration is:

[tex]a(t) = 24t + 2[/tex]

Velocity:

[tex]v(t) = \int {a(t)} \, dt = \int {24t + 2} \, dt = 12t^{2} + 2t + K[/tex]

K is the initial velocity, that is v(0). Since V(0) = 13, K = 13

Then

[tex]v(t) = 12t^{2} + 2t + 13[/tex]

Position:

[tex]s(t) = \int {s(t)} \, dt = \int {12t^{2} + 2t + 13} \, dt = 4t^{3} + t^{2} + 13t + K[/tex]

Since s(0) = 3

[tex]s(t) = 4t^{3} + t^{2} + 13t + 3[/tex]

What is its position at time t=5?

This is s(5).

[tex]s(t) = 4t^{3} + t^{2} + 13t + 3[/tex]

[tex]s(5) = 4*5^{3} + 5^{2} + 13*5 + 3[/tex]

[tex]s(5) = 593[/tex]

It's position at time t = 5 is 593.

Answer:

b=3.54

Step-by-step explanation:

9.89-6.35=3.54

Answer: b=3.54

Step-by-step explanation:

Subtract 6.35 from both sides and you will get that b=9.89-6.35 solve that and you will get that b= 3.54.

Answer:

The correct option is A. 204, 212.5, 223, 233.5, 242.

Step-by-step explanation:

The five number summary of a data set is:

The data provided, in ascending order is:

S = {204 , 207 , 212 , 212 , 213 , 217 , 219 , 223 , 223 , 225 , 230 , 233 , 234 , 238 , 239 , 242}

There are a total of 16 values in the data set.

The minimum value is,

Minimum = 204

The first quartile is the median value of the first half of the data.

The first half of the data is:

S₁ = {204 , 207 , 212 , 212 , 213 , 217 , 219 , 223 }

The median for even number of observations is the mean of the middle two values.

[tex]\text{Q}_{1}=\frac{4^{th}+5^{th}}{2}=\frac{212+213}{2}=212.5[/tex]

The first quartile is 212.5.

The median for even number of observations is the mean of the middle two values.

[tex]\text{Median}=\frac{8^{th}+9^{th}}{2}=\frac{223+223}{2}=223[/tex]

The median of the data is 223.

The third quartile is the median value of the second half of the data.

The first half of the data is:

S₂ = {223 , 225 , 230 , 233 , 234 , 238 , 239 , 242}

The median for even number of observations is the mean of the middle two values.

[tex]\text{Q}_{3}=\frac{12^{th}+13^{th}}{2}=\frac{233+234}{2}=233.5[/tex]

The third quartile is 233.5.

The maximum value is,

Maximum = 242

Answer:

123

Step-by-step explanation:

Answer:

734

Step-by-step explanation:

divide 1468 by 2

Answer:

Step-by-step explanation:

Let x represent the number of goats. The 500-x is the number of geese. The total number of legs is ...

  4x +2(500 -x) = 1468

  2x +1000 = 1468 . . . . . . . eliminate parentheses

  2x = 468 . . . . . . . . . . .subtract 1000

  x = 234 . . . . . . . . .number of goats

  (500 -x) = 266 . . number of geese

Answer:

[tex] y = -\dfrac{1}{28}x + 15 [/tex]

Step-by-step explanation:

The car uses 15 gallons of gasoline to drive 420 miles.

(15 gal)/(420 mi) = 1/28 gal/mi

The car uses 1/28 gallon of gasoline per mile.

y = mx + b

When x = 0, at the start of the drive, the car has 15 gallons of gasoline.

y = mx + 15

Then for every mile it travels, the amount  of gasoline goes down by 1/28 gal. For x miles of travel, it uses 1/28 * x gallons of gasoline.

[tex] y = -\dfrac{1}{28}x + 15 [/tex]

Answer:

Yes

Step-by-step explanation:

Simplify the following:

1×7×6×7×89×7×33×188 + 4444 - 82×77×9999

1×7 = 7:

7×6×7×89×7×33×188 + 4444 - 82×77×9999

7×6 = 42:

42×7×89×7×33×188 + 4444 - 82×77×9999

42×7 = 294:

294×89×7×33×188 + 4444 - 82×77×9999

| | 2 | 9 | 4

× | | | 8 | 9

| 2 | 6 | 4 | 6

2 | 3 | 5 | 2 | 0

2 | 6 | 1 | 6 | 6:

26166×7×33×188 + 4444 - 82×77×9999

26166×7 = 183162:

183162×33×188 + 4444 - 82×77×9999

| 1 | 8 | 3 | 1 | 6 | 2

× | | | | | 3 | 3

| 5 | 4 | 9 | 4 | 8 | 6

5 | 4 | 9 | 4 | 8 | 6 | 0

6 | 0 | 4 | 4 | 3 | 4 | 6:

6044346×188 + 4444 - 82×77×9999

| | | 6 | 0 | 4 | 4 | 3 | 4 | 6

× | | | | | | | 1 | 8 | 8

| | 4 | 8 | 3 | 5 | 4 | 7 | 6 | 8

| 4 | 8 | 3 | 5 | 4 | 7 | 6 | 8 | 0

| 6 | 0 | 4 | 4 | 3 | 4 | 6 | 0 | 0

1 | 1 | 3 | 6 | 3 | 3 | 7 | 0 | 4 | 8:

1136337048 + 4444 - 82×77×9999

| | 8 | 2

× | | 7 | 7

| 5 | 7 | 4

5 | 7 | 4 | 0

6 | 3 | 1 | 4:

1136337048 + 4444 + -6314×9999

| | | | 9 | 9 | 9 | 9

× | | | | 6 | 3 | 1 | 4

| | | 3 | 9 | 9 | 9 | 6

| | | 9 | 9 | 9 | 9 | 0

| 2 | 9 | 9 | 9 | 7 | 0 | 0

5 | 9 | 9 | 9 | 4 | 0 | 0 | 0

6 | 3 | 1 | 3 | 3 | 6 | 8 | 6:

1136337048 + 4444 + -63133686

| | | | | | 1 | | | 1 |  

| 1 | 1 | 3 | 6 | 3 | 3 | 7 | 0 | 4 | 8

+ | | | | | | | 4 | 4 | 4 | 4

| 1 | 1 | 3 | 6 | 3 | 4 | 1 | 4 | 9 | 2:

1136341492 - 63133686

| | | | | | | 10 | | |  

| | 0 | 13 | | | 3 | 0 | 14 | 8 | 12

| 1 | 1 | 3 | 6 | 3 | 4 | 1 | 4 | 9 | 2

- | | | 6 | 3 | 1 | 3 | 3 | 6 | 8 | 6

| 1 | 0 | 7 | 3 | 2 | 0 | 7 | 8 | 0 | 6:

Answer: 1,073,207,806

Answer:

4.6570394e+12

Step-by-step explanation:

1. 1x7=7

2. 7x6=42

3. 42x7=294

4. 294x89=26166

5. 26166x7=183162

6. 183162x33=6044346

7. 6044346+4444=6048790

8. 6048790-82=6048708

9. 6048708x77=465750516

10. 465750516x9999=4.6570394e+12

Answer: Option C: 44

Step-by-step explanation:

so, here we have the equation:

H(a,b) = 2a + 4b

"evaluate" means change the values of the variables for specific values, here we must replace the "a" for 10, and the "b" for a 6.

So we have:

H(10, 6) = 2*10 + 4*6 = 20 + 24 = 44

Answer:

700

Step-by-step explanation:

I am slightly confused by your wording, but Im assuming you mean the expanded form.

In the base ten system, the second to last digit is the tens place. Therefore, the 7 represents 7*10 = 70

10 times larger than 70 is 700

Answer:

4

Step-by-step explanation:

When parallelogram FGHJ is dilated and translated to similar parallelogram F'G'H'J', the scale factor of dilation is 4.

Dilation is a transformation, which is used to resize the object. Dilation is used to make the objects larger or smaller. This transformation produces an image that is the same as the original shape.

As visible,

FG = GH = JH = FJ = 2 units

F'G' = G'H' = J'H' = F'J' = 8 units

Scale factor of Dilation = 8/2 = 4 units

Learn more about dilation here

https://brainly.com/question/13176891

#SPJ2

Answer:

8(3)=24

3(8) =24

Step-by-step explanation:

Step-by-step explanation:

i want brainliest please

Answer:

8 sets of 3 positive tiles.

Which of the following multiplication expressions can be modeled by the tiles shown? Check all that apply.

yes 8(3) = 24

no 6(4) = 24

no (3)(12) = 36

no 24(3) = 72

yes 3(8) = 24

no 2(12) = 24

yah welcome

Answer: 182 miles.

Step-by-step explanation:

0.17x + 18.95 ≥ 50

        - 18.95     -18.95

0.17x = 31.05

x= 182

Answer:

A,C,F

Step-by-step explanation: I took the test :)

The expression 64 is perfect cube of 3.

The expression [tex]8x^{3][/tex] is the perfect cube of [tex](2x)^{3}[/tex].

The expression [tex]12x^{9}[/tex] is perfect square of [tex](5x^{3})^{3}[/tex]

We have to determine, which to the following is perfect cube.

According to the question,

A perfect cube is an integer that is equal to some other integer raised to the third power.

To obtain the perfect cubes of the expression, it can be determined in following steps.

The given expression is 64.

To convert it into perfect square written in small factor parts.

Therefore, 64 written as,

[tex]= 64\\\\= 2 \times 2 \times 2 \times 2 \times 2 \times 2 \\\\= (2)^{3} \times (2)^{3}\\\\= (2\times 2)^{3}\\\\=( 4)^{3}[/tex]

The expression 64 is perfect cube of 3.

The given expression is 16x.

To convert it into perfect square written in small factor parts.

Then,

16x can be written as,

[tex]= 16x \\\\= 2\times 2\times 2\times 2\times x\\\\= 2x.(2)^{3}\\[/tex]

The expression 16x is not perfect cube.

The given expression is [tex]8x^{3][/tex].

To convert it into perfect square written in small factor parts.

Then,

[tex]8x^{3}[/tex] can be written as,

[tex]= 8x^{3}\\\\= 2 \times 2 \times 2 \times x^{3}\\\\= (2)^3 \times {x^{3}}\\\\= (2x)^{3}[/tex]

The expression [tex]8x^{3][/tex] is the perfect cube of [tex](2x)^{3}[/tex].

The given expression is [tex]27x^{4}[/tex]

To convert it into perfect square written in small factor parts.

Then,

[tex]27x^{4}[/tex] can be written as,

[tex]= 27x^{4}\\\\= 3 \times3 \times3 \times x^{4}\\\\= (3)^{3} \times x \times x^{3}\\\\= x \times (3x)^3[/tex]

The expression [tex]27x^{4}[/tex] is not a perfect cube.

The given expression is [tex]81x^{6}[/tex]

To convert it into perfect square written in small factor parts.

Then,

[tex]81x^6[/tex] can be written as,

[tex]= 81x^{6}\\\\= 3 \times3 \times3 \times3 \times x^{6}\\\\= 3.(3)^{3} \times x^{3} \times x^{3}\\\\= 3 \times ( 3x^{2}) ^{3}[/tex]

The expression [tex]81x^{6}[/tex] is not a perfect cube.

The given expression is [tex]81x^{6}[/tex]

To convert it into perfect square written in small factor parts.

Then,

[tex]125x^{9}[/tex] can be written as,

[tex]=125x^{9}\\\\= 5 \times 5 \times 5 \times x^{3} \times x^{3} \times x^{3}\\\\= (5x^{3})^{3}[/tex]

The expression [tex]12x^{9}[/tex] is perfect square of [tex](5x^{3})^{3}[/tex]

To know more about perfect square click the link given below.

https://brainly.com/question/16780291

Answer:

2,000,000+900,000+30,000+300+60+5

Step-by-step explanation:

hope this helps and Please Rate brainliest!!!