An arborist examined trees in an orchard to see if they were infected with a virus. The arborist counted 7 infected trees and 43 healthy trees. What percentage of the trees in the orchard were infected?

Answer:

A

Step-by-step explanation:

In this question only values of x are changed, so graph is shifted 7 units to the left

C.) Y = 125000(1.035)x

Step-by-step explanation:

I took the test and got it right

Answer:

12m

Step-by-step explanation:

its similar triangles the opposite is always 2times the side.

Answer:

Option D

Step-by-step explanation:

If (1, 6) is the only solution of the system of equations and one of system of equations is,

y = 2x + 4

Then solution of the system will satisfy both the equations.

Option A

y = 4x - 7

By satisfying this equation by (1, 6),

6 = 4(1) - 7

6 = -3

False.

Therefore, given equation is not the answer.

Option B

y = 2x + 8

By satisfying this equation by (1, 6),

6 = 2(1) + 8

6 = 10

False.

Therefore, given equation is not the answer.

Option C

y = -2(x + 2)

By satisfying this equation by (1, 6),

6 = -2(1 + 2)

6 = -6

False.

Therefore, given equation is not the answer.

Option D

y = 5x + 1

By satisfying this equation by (1, 6),

6 = 5(1) + 1

6 = 6

True.

Therefore, this is one of the equations of the system of equations.

Option D is the answer.

Answer:

a)0.135%

b) 36.944%

c) 95.209%

Step-by-step explanation:

We solve the above question using z score formula

z = (x-μ)/σ, where

x is the raw score

μ is the population mean = 2.25 hours

σ is the population standard deviation = 0.75 hours

a) What portion of adults are in front of a computer for less than 0 hours a day, outside of work?

x < 0 hours

Hence,

z = 0 - 2.25/0.75

= -3

Probability value from Z-Table:

P(x<0) = 0.0013499

Converting to Percentage

= 0.0013499 × 100

= 0.13499%

= 0.135%

b) Medical professions recommend spending no more than 2 hours in front of a computer each day. What portion of the population is on their computer more than the recommended amount?

No more than 2 hours

x ≤ 2 hours

x < 2 hours

Hence,

z = 2 - 2.25/0.75

= -0.33333

Probability value from Z-Table:

P(x≤ 2) = 0.36944

Converting to Percentage

= 0.36944 × 100

= 36.944%

c)What portion of adults spend between 1 and 5 hours a day in front of a compute reach day, outside of work?

For x = 1 hour

z = 1 - 2.25/0.75

= -1.66667

P-value from Z-Table:

P(x= 1) = 0.04779

z = 5 - 2.25/0.75

= 3.66667

P-value from Z-Table:

P(x = 5) = 0.99988

Hence,

0.99988 - 0.04779

= 0.95209

Converting to Percentage

= 0.95209 × 100

= 95.209%

Answer:

Step-by-step explanation:

P=a+b+c

Right scalene triangle.

Sides: a = 21   b = 8   c = 22.472

Area: T = 84

Perimeter: p = 51.472

Semiperimeter: s = 25.736

Angle ∠ A = α = 69.146° = 69°8'44″ = 1.207 rad

Angle ∠ B = β = 20.854° = 20°51'16″ = 0.364 rad

Angle ∠ C = γ = 90° = 1.571 rad

Height: ha = 8

Height: hb = 21

Height: hc = 7.476

Median: ma = 13.2

Median: mb = 21.378

Median: mc = 11.236

Inradius: r = 3.264

Circumradius: R = 11.236

Vertex coordinates: A[22.472; 0] B[0; 0] C[19.624; 7.476]

Centroid: CG[14.032; 2.492]

Coordinates of the circumscribed circle: U[11.236; -0]

Coordinates of the inscribed circle: I[17.736; 3.264]

Exterior (or external, outer) angles of the triangle:

∠ A' = α' = 110.854° = 110°51'16″ = 1.207 rad

∠ B' = β' = 159.146° = 159°8'44″ = 0.364 rad

∠ C' = γ' = 90° = 1.571 rad

Answer:

Answer:

A. minimum at x = -2.

Step-by-step explanation:

Finding the derivative:

f'(x) = 12x.

12x = 0 for a maxim/ minimum.

x = 0.

As the second derivative (12) is positive,  we have a minimum value when x = 0.

So the function has a minimum value  where f(x) = 6(0)^2 -2 = -2.

Answer: 541.32 miles

Step-by-step explanation:

First find the speed of the train in miles per hour.

1 hour 20 minutes needs to be converted to decimal:

= 1 20/60

= 80/60

= 1.33 hours

Speed is:

= Distance / Time

= 120/ 1.33

= 90.22 miles an hour

If the train is traveling 6 hours at the above speed, it will travel:

= Speed * time

= 90.22 * 6

= 541.32 miles

Answer: D

Step-by-step explanation:

Answer:

B

Both the domain and range change.

Both the range and domain stay the same.

The domain stays the same, but the range changes.

The range stays the same, but the domain changes.

Step-by-step explanation:

Answer:

Step-by-step explanation:its yo mom

Answer:

0.64                        

Step-by-step explanation:

Answer:

the answer is C

Step-by-step explanation:

the data is skewed right and shows that half of Steve's friends have visited 4 to 10 states.

Answer:

The data is skewed right and shows that half of Steve’s friends have visited 4 to 10 states.

Step-by-step explanation:

I took the test

Answer:

correct answer is D i think so

Answer:

TOO MANY

Step-by-step explanation:

so if people are playing with 2 people at a time then it would go like this...

it would start with 4 billion v.s. 4 billion.

then it would narrow down to 2 billion v.s. 2 billion.

then it would go down to 1 billion v.s. 1 billion.

then i would go down to 500 million v.s. 500 million.

then it would go down to 250 million v.s. 250 million.

Then it would go down to 125 million v.s. 125 million.

then it would go down to 62,500 v.s 62,500.

then it would go down to 31,250 v.s. 31,250.

then it would go down to 15,625 v.s. 15,625.

then it would go down to 7,812 v.s. 7812.

then it would go down to 3,906 v.s. 3906.

then it would go down to 1,953 v.s. 1953.

then it would go down to 976 v.s. 976.

then it would go down to 488 v.s. 488.

then it would go down to 244 v.s. 244.

then it would go down to 122 v.s. 122.

then it would go down to 61 v.s. 61.

then it would go down to 30 v.s. 30.

then it would go down to 15 vs 15.

then it would go down to 7 vs 7.

then it would go down to 3 vs 3.

then it would go down to 1 vs 1.

so it would take 22 matches if the matches were conducted like tournements.

Answer:

65⁰

Step-by-step explanation:

When light comes into contact with a surface, the angle of reflection equals the angle of incidence.

Answer:

each apple is £ 1.80

Step-by-step explanation:

i first multiplied the cost for one pear by 7, to get how much money was spent on pears out of the 12.70.

Then i took the remaining money and divided it by 2 to get how much each apple costs.

Answer:

1.80

Step-by-step explanation:

1) Price of Pears

[tex]1.30 * 7 = 9.10[/tex]          formating: 1.30*7 = 9.10

2) Price of Apples

[tex]12.70 - 9.10 = 3.60[/tex]          formating: 12.70-9.10 = 3.60

3) Price of Apples/Kg

[tex]\frac{3.60}{2} = 1.80[/tex]          formating: 3.60/2 = 1.80

Answer:

Step-by-step explanation:

5²+10²=25+100=125

13²=169

so 5²+10²≠13²

so it is not a right angled triangle.

Answer:

no because a right angle has all sides equal

Answer:

120miles

Step-by-step explanation:

I am not sure exactly I just guessed that since it's 40 miles an hour, it would be 40 x 3 ~ but am not sure... hope it works out!

btw am rlly bad at this :'')

- sry if am wrong

Answer:

the corect answer for this question is

(4,3-)

Answer:

A

Step-by-step explanation:

the line going horizontal(left to right), is the y line

the line going vertically (up and down), is the x line

now that we know where the x and the y lines are at, now we apply it to the format, (x,y)

where the y and x line meet is the origin (0,0), going left or down make the number a negative. up and right make the number positive  

Answer:

Step-by-step explanation:

<2 + <1 + 20 = 180                 A straight line has 180 degrees.

<2 is given as 90 degrees.

90 + <1 + 20 = 180                Combine like terms

<1 + 110 = 180                        Subtract 110 from both sides

<1 = 180 - 110

<1 = 70

<1 + <2 + <3 = 180

<1 = 70

<2 = 90

70 + 90 + <3  = 180

160 + <3 = 180                    Subtract 160 from both sides

<3 = 180 -  160

<3 = 20

20 + 20 + <4 = 180            Straight line theorem stated above.

40 + <4 = 180                     Subtract 40 from both sides

<4 = 180 - 40

<4 = 140

Answer:

25² · 40 π in.³

Step-by-step explanation:

V = πr²h

π · 25² · 40

≈ 78539.81634

Since your question wants it in a different way, you have to know the formula.

V = πr²h

V = r² · h π in³

v = 25² · 40 π in³

Answer:

y = -1/2 = -0.500

Step-by-step explanation:

your welcome have a good day :)

stay safe

stay hydrated

wear a mask

┐(^▂ ^ ；)┌

Answer:

2

Step-by-step explanation:

the cross section of a sphere is a circle

only the cone can have a circle for a cross section

The figure of cone can have the same cross section as a sphere.

Similar figure are zoomed in or zoomed out (or just no zoom) version of each other. They are scaled version of each other, and by scale, we mean that each of their dimension(like height, width etc linear quantities) are constant multiple of their similar figure.

For two similar figures, the pair by pair similar angles of those two similar figures are called corresponding angles. They are of same measurement.

When we slice a given object vertically (perpendicular to the ground level), then the sliced surface is called vertical cross section.

Here we can see that the cross section of a sphere is a circle and only the cone can have a circle for a cross section.

So, the answer is option 2.

Learn more about sphere here:

https://brainly.com/question/13250046

#SPJ2

Answer:

Your answer is y=1/2x+8

Answer:7/20 is the answer

Step-by-step explanation:

Answer:

0,31

Step-by-step explanation:

l'échelle = mesure plan/mesure réelle

37,5/120 ≈ 0,31

Answer:

c. it is not a solution to either equation

Step-by-step explanation:

let me know if this is incorrect

Answer:

3rd option

Step-by-step explanation:

tan X = [tex]\frac{opposite}{adjacent}[/tex] = [tex]\frac{YZ}{XZ}[/tex] = [tex]\frac{12}{5}[/tex]