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4 years ago

Carl is trying to determine the length of segment MN using the Pythagorean theorem.

Mathematics

2 answers:

Over [174]4 years ago

4 0

Answer:

B) Carl's answer is correct but he incorrectly labeled the leg lengths in step 2.

Step-by-step explanation:

I just took the test on edg

gavmur [86]4 years ago

3 0

B. Carl's answer is correct but he incorrectly labeled the leg lengths in step 2.

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A farmer is tracking the amount of corn his land is yielding each year. He finds that the function f(x) = −x2 + 20x + 50 models

polet [3.4K]

Answer:

The crop yield increased by 9 pounds per acre from year 1 to year 10.

Step-by-step explanation:

To solve this we are using the average rate of change formula: $Av=\frac{f(x_2)-f(x_1)}{x_2-x_1}$ , where:

$x_2$ is the second point in the function

$x_1$ is the first point in the function

$f(x_2)$ is the function evaluated at the second point

$f(x_1)$ is the function evaluated at the first point

We know that the first point is 1 year and the second point is 10 years, so $x_1=1$ and $x_2=10$ . Replacing values:

$Av=\frac{-(10)^2+20(10)+50-[-(1)^2+20(1)+50]}{10-1}$

$Av=\frac{-100+200+50-[-1+20+50]}{9}$

$Av=\frac{150-[69]}{9}$

$Av=\frac{150-69}{9}$

$Av=\frac{81}{9}$

$Av=9$

Since $f(x)$ represents the number of pounds per acre and $x$ the number of years, we can conclude that the crop yield increased by 9 pounds per acre from year 1 to year 10.

6 0

4 years ago

Giving a test to a group of students, the grades and gender are summarized below

sweet [91]

Answer:

Kindly check explanation

Step-by-step explanation:

________A___ B___ C___ Total

Male____ 9___13___ 6____ 28

Female_ 20__ 19___ 2____ 41

Total___ 29__ 32___ 8____ 69

If one student is chosen at random,

Find the probability that the student got a C:

P(getting C) = (number of C's) / total number

P(getting C) = 8 / 69

Find the probability that the student was female AND got a "C":

P(female and C):

(number of female who got C / total number)

= 2 / 69

Find the probability that the student was male OR got an "B":

P(male OR B) :

(Number of males or B) = (28 + 32) - 13 = 47

= 47 / 90

find the probability that the student got a 'C' GIVEN they are female:______.

P(C given they are female) :

This is the proportion of females who got C

Total Number of females = 41

Females who got C = 2

Hence,

P(C given they are female) = 2 / 41

6 0

4 years ago

Which point is the image of R? Choose one answer: A B C D

geniusboy [140]

Answer:

point D

Step-by-step explanation:

moving 270 degrees clockwise from point R would result in the point being in quadrant I

point D is the only point in quadrant I

4 0

3 years ago

Read 2 more answers

K=½ mv^2<br> solve for k <br><br> Also tell me how you got it!

Mekhanik [1.2K]

Answer:

m = 2k/v²

Step-by-step explanation:

I think you mean solve for m, not k

Multiply both sides of the equation by 2

2 * 1/2 *(mv²) = 2 * k

Rewrite the expression.

1*(mv²) = 2*k

Multiply mv² by 1

mv² = 2*k

Divide each term by v² and simplify

mv²/v² = 2k/v²

mv²/v² cancel out and you get

m = 2k/v²

8 0

3 years ago

Log base2 log base 25

UkoKoshka [18]

I think it’s 5. Since logarithms are used to find the original value of a power. Therefore you reverse it and do square root of 25 which is +5 or -5

4 0

3 years ago