Cocoa plant type 1 yielded 155 bushels per acre last year at a research farm. This year,
cocoa plant type 2, planted in the same location, yielded only 123 bushels per acre and
there was a major freeze. The researchers do not know whether the difference is the
result of the superiority of type 1 or the freeze. What is this an example of? (4 points)
- Bias
- Confounding variable
- Matched-pairs desighs
- The placebo effect
- Replication

Answer:

-11

Step-by-step explanation:

-3+7-5+(-10)=

7-3-5-10=

7-18=

-11

Answer:

1st box= 5

2nd box= 3

3rd box= 8

4th box=5

Answer:

Step-by-step explanation:

1st box= 5

2nd box= 3

3rd box= 8

4th box=5

Answer:

the answer is -2x-4

Step-by-step explanation

Answer:

the answer is -2x-4

Step-by-step explanation:

Answer:

c

Step-by-step explanation:

Answer:

b

Step-by-step explanation:

Answer:

1500 units.

Step-by-step explanation:

-A pentagon is a a regular pentagon with 5 equal sides.

-Since the side length's are equal, the perimeter is simply the product of one side length by the number of sides of the polygon.

-Given its sides  measures 300 each, its perimeter can be calculated as:

[tex]P=5s\\\\=5\times 300\\\\=1500 \ units[/tex]

Hence, the Pentagon's permimeter is 1500 units.

Answer:

The perimeter of the Pentagon is 1500

The perimeter of the Capitol is 1131

Percy would win the debate

Step-by-step explanation:

The 1000 cubic centimeters of aluminium is enough for aluminium a trophy  that will be in the shape of a right square pyramid and has a base edge of 10 cm and a slant height of 13 cm.

Step-by-step explanation:

The given is,

                    Volume of aluminium available is 1000 cubic centimeters

                    Shape of trophy is right square pyramid

                    Trophy has a base edge of 10 cm and slant height of 13 cm

Step:1

                     Formula for volume of right square pyramid,

                                               [tex]Volume, V = a^{2}\frac{h}{3}[/tex].....................................(1)

                     Where, a - Base edge value

                                  h - Height of pyramid

                      From given,

                                        a = 10 cm

                                        h = 13 cm

                      Equation (1) becomes,

                                           [tex]= 10^{2}(\frac{13}{3} )[/tex]

                                           [tex]= (100)(4.333)[/tex]

                                           [tex]= 433.33 cm^{3}[/tex]

             Volume of trophy = 433.33 cubic centimeters

             Compare with the volume of available aluminium and volume of right square pyramid,                          

            [tex]Volume of available aluminium > Volume of right square pyramid[/tex]

                                               [tex]1000 cm^{3} > 433.33 cm^{3}[/tex]

            So, the given volume of aluminium is enough to make right square pyramid shaped trophy.

Result:

          The 1000 cubic centimeters of aluminium is enough for aluminium a trophy  that will be in the shape of a right square pyramid and has a base edge of 10 cm and a slant height of 13 cm.

Answer:

Yes, the volume of the trophy is 400 cm3

Answer:

If 2x - 5 = 19, then x = 12

Step-by-step explanation:

Answer:

The Answer Is B. Median = 30; Q1 = 26

Step-by-step explanation:

Answer: Median 31 and Q1 is 26 its 100% verified

Step-by-step explanation:

Answer:

3.09

Step-by-step explanation:

three and 9 hundredths

and meaning a decimal

hundredths is the second place after the decimal

3.09

Three and nine hundredths as a decimal form is equals to 3.09.

" Decimal form is representation of number as a combination of whole number and it fractional part."

According to the question,

Hundredths is the second digit to the right of the decimal.

Three and nine hundredths = 3.09

Hence, three and nine hundredths as a decimal form is equals to 3.09.

Learn more about decimals here

https://brainly.com/question/16361602

#SPJ2

Answer:

1)Mean=920 $

2)Standard Error =S.E.=38

3)more likely to take place Event 25 studio apartments with a mean rent between $901 and $939

Step-by-step explanation:

Given:

True mean =920 $

S.D=190 $

No .of samples=25

To Find:

1)Mean of sample.

2)S.E

Solution:

Now , the mean for given sample distribution is  given as 920 $

Hence Mean =920 $

Now calculating the Standard error

S.E.= S.D./Sqrt(n)

=190/Sqrt(25)

=190/5

=38

Therefore the Standard error is about 38 .

a) When n=1 then P(901≤X≤939)

So,

Z1=(901 -920)/190/Sqrt(1)]

Z1=-0.1

Z2=(939-920)/(190/Sqrt(1)]

Z2=0.1

So

Pr(-0.1≤Z≤0.1)=P(Z≤0.1)-P(Z≤-0.1)

=0.5398-0.4602

=0.0797  % chance of the sample distribution

b)n=25 then P(901≤X≤939)

Z1=(901-920)/S.E

Z1=-19/38=

Z1=-0.5

And Z2=0.5

So,

Pr(-0.5≤Z≤0.5)

=Pr(Z≤0.5)-Pr(Z≤-0.5)

=0.6915-0.3085

=0.3829

i.e 38.29 % chance of the sample distribution

Hence More likely to take place will be a sample of 25 studio apartments with a mean rent between $901 and $939.

0.3829>0.0797.

Because the probability of causing above event is more than the option A.

Answer:

$1.67

Step-by-step explanation:

Let x be the no. of gums

96.6 + 0.79x》100

0.79x 》 3.4

x》4.3037974684

So x = 5

15% discount: she pays 0.85(96.6)

= 82.11

20% discount (after gums)

She pays 0.8[96.6 + 5(0.79)]

= 0.8(100.55)

= 80.44

Less:

82.11 - 80.44

= 1.67

Answer:

Option D.

Step-by-step explanation:

From the given figure it is clear that,

Length = 9 cm

Breadth = 8 cm

Height = 1 cm

We know that the volume of a cuboid is

[tex]V=Length\times Breadth\times Height[/tex]

[tex]V=9\times 8\times 1[/tex]

[tex]V=72[/tex]

So, the volume of give cuboid is 72 centimetre cubed.

Therefore, the correct option is D.

Answer:

d

Step-by-step explanation:

Answer:

x^2 -2x -35 = 0

Step-by-step explanation:

Lets's solve backwards

x = -5

Add 5 to both sides

x + 5 = 5 - 5

x + 5  = 0

and

x = 7

Subtract 7 from both sides

x - 7 = 7 - 7

x - 7 = 0

Finding the product of both linear functions

(x + 5)(x - 7) =0

x^2 -7x + 5x -35 =0

x^2 -2x -35 = 0

Answer: A

Step-by-step explanation:

Answer:

A is correct because it is the only one to make sense

Answer:

Measure of arc AE = 58°

Step-by-step explanation:

As shown: ABCD is a quadrilateral, ∠C = 119°

So, ∠C + ∠A = 180°

∴ ∠A = 180° - ∠C = 180° - 119° = 61°

ΔAGB is a right triangle at G

So, ∠A + ∠B = 90°

∴ ∠ABG = 90 - ∠A = 90 - 61 = 29°

Arc AE opposite to the angle ∠ABG

So, measure of arc AE = 2∠ABG = 2 * 29° = 58°

Answer:

a=7b+27/2

Step-by-step explanation:

1: Add 7/3b to both sides.

2 /3 a+  −7 /3b  + 7/3b = 9+ 7/3b

2/3a=7/3b+9

2: Divide both sides by 2/3.

2/3a= 7/3b + 92

/ 2/3a    / 2/3a

a=7b+27/2

Answer: x = -7

Step-by-step explanation:

2.5x+10=x-0.5

Collect like terms

2.5x-x= -0.5 -10

1.5x= -10.5

X= -10.5/1.5

X= -7

Answer: -7

Step-by-step explanation:

Answer:

C

Step-by-step explanation:

Answer:

$56,000

Step-by-step explanation:

so the right answer is of option A.

Hope this will help u...

Answer:

A. 12375

Step-by-step explanation:

Simple Interest Formula:

[tex]A = P(1+rt)\\[/tex]

A = 37375 in this case. This is the amount of money you'll have after 9 years. However, the question asks for how much interest you'll gain, meaning you have to subtract the principle from it. 37375 - 25000 =  12375

The only transformation that does not preserve congruence is a translation 7 units down

Transformation is the process of changing the position of an object on an xy-plane.

A reflection preserve the congruence since it only create a mirror image of the figure.

Dilation also preserve congruence since it only enlarges the given figure. The only transformation that does not preserve congruence is a translation 7 units down

Learn more on transformation here: https://brainly.com/question/4289712

#SPJ1

Answer:

The answer is Joel earns $7 per hour to mow his aunt’s lawn. If he spends $6 on gas, how many hours, x, will he need to mow to have $29 left?

Step-by-step explanation:

Answer:

Step-by-step explanation:

Total member = 25 + 15 = 40

[tex]girls percentage = \frac{15}{40}*100\\\\=\frac{15}{2}*5\\\\=\frac{75}{2}=37.5\\[/tex]

= 37.5%

The area of a circle with a radius of 1.2 meters is 4.5 m², rounded to two significant figures to match the precision of the given radius.

The area of a circle is given by the formula A = πr², where π (pi) represents a mathematical constant approximately equal to 3.14159, and r is the radius of the circle. When calculating the area with a radius of 1.2 meters, we get the precise calculation as A = π(1.2 m)² = 4.5238934 m². However, as the radius is given with only two significant figures, the area should also be rounded to two significant figures, resulting in A=4.5 m².

Answer:

-16 - 6 would be -22

Step-by-step explanation: The reason for this is is simple subtraction except in this case you wanna think of addition. -16 - 6 can also be thought of 16+6. In that case you get 22 and then you just add the negative sign.

Answer:it is under by approximately 0.6 units

Step-by-step explanation:

Answer:

its B. (it is under by approximately 0.6 units.)

Step-by-step explanation:

I got it right on 2020 Edu.

Answer:

7.14 in. sq

Step-by-step explanation:

First find the area of the square; 2x2=4

Now find the area of the semi-circle; radius = 1.    

1 squared= 1 Now multiply by 3.14 which equals 3.14

Now divide by 2 because it's a semi-circle, you get 1.57.

Multiply 1.57 by 2 because you have 2 semi-circles, the would equal 3.14

Add 4+3.14 and you get 7.14

The area of the composite figure is 7.14 in. sq

Answer:

Step-by-step explanation:

Answer:

C) y = 1

General Formulas and Concepts:

Algebra I

Step-by-step explanation:

We are given the line y = 6, a horizontal line with a slope of 0.

According to the answer choices, we need to find an equation of a line that also has a slope of 0.

A, B, and D are all incorrect, as they have a different slopes than the original line (Slope of -6, undefined, and 6 respectively).

Therefore, our only option is C, which is the correct answer.

y = 1 has the same slope, a slope of 0. However, it has a different y-intercept, a y-intercept of 1 compared to the original y-intercept 6. They are parallel and will never intersect.

The sequence is an illustration of a geometric sequence

The recursive formula of the sequence is [tex]\mathbf{a_n = 40 \times 0.75^{n-1}}[/tex]

The sequence is given as: 40, 30, 22.5.....

So, we have:

[tex]\mathbf{a_1 = 40}[/tex]

[tex]\mathbf{a_2 = 30}[/tex]

[tex]\mathbf{a_3 = 22.5}[/tex]

Rewrite as:

[tex]\mathbf{a_1 = 40}[/tex]

[tex]\mathbf{a_2 = 40 \times 0.75}[/tex]

[tex]\mathbf{a_3 = 40 \times 0.75^2}[/tex]

Express 2 as 3 - 1

[tex]\mathbf{a_3 = 40 \times 0.75^{3-1}}[/tex]

Substitute n for 3

[tex]\mathbf{a_n = 40 \times 0.75^{n-1}}[/tex]

Hence, the recursive formula is [tex]\mathbf{a_n = 40 \times 0.75^{n-1}}[/tex]

Read more about recursive formula at:

https://brainly.com/question/11679190

Answer:

The common side shared is ED.

Step-by-step explanation:

Answer:

The common side shared is ED , it is their common base