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Margaret [11]
3 years ago
11

Identify the variation as direct, inverse, joint or combined. A = πr^2

Mathematics
1 answer:
Reika [66]3 years ago
7 0

Answer:

1. y = 7x. This is an example of direct variation as the value of y also increases if the value of x is increased.

2. xy = 24. This is an example of inverse because the value of y is decreased when x is increased. 

3. F = 4/R. This is inverse variation for the same reason as number 2.

4. m/n = 4. Direct variation. For the same reason as number 1.

5. i = 2pr. Joint variation. The value of i is dependent on the values of two other variables.

6. R = cl/r². Joint variation.

7. A = pir². Direct variation. I believe pi here is for π, leaving only A being dependent only to value of r. 

8. V= pir²h. Joint variation. 

Step-by-step explanation:

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[{78 + (-13)} -8] · (-10) + 10
OlgaM077 [116]

Answer:

5210

Step-by-step explanation:

You start with everything in parentheses so it is 78+ (-13) first. then you multiply it by -8 after multiply again but by (-10) then add 10.

5 0
3 years ago
Pls help! This test determines if I take math 1 or 2 for 8th grade!!
nexus9112 [7]

Answer:

My best guess is D she can make 4 dozen cokies

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Question 1 of 15
Mrac [35]

The function y = - 50x + 75 is linear. So, the correct option is (A).

<h3>Define linear function.</h3>

The formula for a linear function is f(x) = mx + b, where m and b are real values. Isn't it resembling the slope-intercept form of a line, represented by the equation y = mx + b? Yes, this is the case as the graph of a linear function is a line. Here,

The line has a slope of m and a y-intercept of b.

The independent variable is "x."

The dependent variable is "y" (also known as f(x)).

Consider the equation y = - 50x + 75

Compared to the linear function equation, we get

m = -50

b = 75

So, the function is a linear function with a constant change. The function will be linear at all points.

To know more about linear functions, visit:

brainly.com/question/20286983

#SPJ1

8 0
2 years ago
Three vertices of parallelogram ABCD are A(0,2), B(8,1), and D(3,4). Find the coordinates of vertex C.
LuckyWell [14K]

Answer:

my answer is(5,7) thats may answer

7 0
3 years ago
A road is inclined at an angle of 5°. After
Scorpion4ik [409]

Answer:

464 feet

Step-by-step explanation:

<em>The Sine of the angle of inclination gives the increase in altitude.</em>

<em>This is because the Sine of an angle is equal to the Opposite side divided by the Hypotenuse side. i.e</em>

Sin Ф = Opposite  ÷ Hypotenuse

Sin 5° = O ÷ 5328

0·08716 = O ÷ 5328

<em>Make </em>O<em> the subject and multiply every fraction by </em>5328

(0·08716/1 × 5328)= (O/5328 × 5328)

464·388 = O

∴ The increase in altitude is 464·388 feet

<em>This is supposed to be to the nearest foot so we round off</em>

464·388 becomes 464 feet

3 0
3 years ago
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