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vesna_86 [32]
3 years ago
6

Please help me answer this question​

Mathematics
1 answer:
sattari [20]3 years ago
4 0

Answer:

a, 14.13. b, 39.25

Step-by-step explanation:

so for a the diameter is 6 so the radius is 3. The equation for the area of the circle is πr2. So 3x3=9. then 9x3.14=28.26. But then we have to divide by two cause we are finding only the shaded area. 28.26/2=14.13.

A is 14.13

for b, its the same thing, so the radiu is 5 and 5x5=25. 25x3.14=78.5, and divide two, so 78.5/2=39.25.

B is 39.25

WARNING: I am not sure this is correct, so if this is wrong i'm sorry, i'm learning too :)

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Y=2x+6 and y=-3x+16 for solving the system
Butoxors [25]
Substitution

Step 1: Solve for x or y in either of the two equations. In the equations that you are given, y is already solved for you.

Step 2: Plug in 2x + 6 into the opposite equation.

   2x + 6 = -3x + 16
         - 6              - 6
------------------------------
   2x = -3x + 10
+ 3x  + 3x
------------------------------
   5x  =  10
 ------   ------
    5        5

x = 2

Step 3: Plug in the x value into either equation.

y = 2(2) + 6
y = 4 + 6
y = 10

The final answer gets expressed as a coordinate pair: (x,y) (2,10)

I hope this helps you :)




4 0
3 years ago
Help with stats! A poll asked the question, "What do you think is the most important problem facing this country today?" Sixteen
Stolb23 [73]
<span>"What do you think is the most important problem facing this country today?"

16% of the respondents answered

"crime and violence."

The margin of sampling error was plus or minus 3%
 
Following the convention that the margin of error is based on a 95% confidence interval, find a 95% confidence interval for the percentage of the population that would respond "crime and violence" to the question asked by the pollsters.

hmmm, im thinking this looks familiar to me, but ill have to see whats wrong about it first

using .16 as p^ and therefore 1-p^ = q^ = .84</span>
6 0
4 years ago
Read 2 more answers
Help me asap i need help i dont understand
QveST [7]

Answer:

∠A + ∠B = 90°

Step-by-step explanation:

Complementary angles are angles which, combined, add to 90°. Therefore, an equation displaying the relationship between two complementary angles may look like this: ∠A + ∠B = 90°.

5 0
2 years ago
If nm = 8x - 14 and jk = x squared + 1, find JK
marissa [1.9K]

A parallelogram in which adjacent sides are perpendicular to each other is called a rectangle. The length of Jk can be either 10 or 26.

<h3>What is a rectangle?</h3>

A parallelogram in which adjacent sides are perpendicular to each other is called a rectangle. A rectangle is always a parallelogram and a quadrilateral but the reverse statement may or may not be true.

Since in a rectangle the opposite sides are equal, therefore, the sides NM and JK will be equal.

JK = MN

8x - 14 = x² + 1

0 = x² - 8x + 15

x = 5, 3

Hence, the length of Jk can be either 10 or 26.

The complete questions are:

Quadrilateral JKMN is a rectangle, if NM= 8x - 14 and JK= x squared + 1, find JK.

Learn more about Rectangle:

brainly.com/question/15019502

#SPJ1

8 0
2 years ago
The total cost of a boat rental includes the price per hour plus the cost of one full tank of gas. The table below represents th
faust18 [17]

Answer:

C. $34

Step-by-step explanation:

$58 is added every 2 hours so you just subtract that from $92 since $92 is the price of 2 hours and a full tank of gas.

5 0
3 years ago
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