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Dmitry [639]
3 years ago
10

Please help me with this question please clarify what you're saying thank you

Mathematics
1 answer:
Nimfa-mama [501]3 years ago
7 0
To find the circumference of this circle, you need to use the formula C=2(3.14)r
which means circumference=2 times pi times the radius so, you would multiply 2.8(the radius of your circle) times 2. Then you would multiply that times 3.14(pi rounded to the nearest hundredth). And there u go. U have ur answer.

C=2(2.8)(3.14)
C= 5.6(3.14)
C=17.584
C=17.58 feet
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An automobile manufacturer claims that its van has a 44.3 miles/gallon (MPG) rating. An independent testing firm has been contra
natulia [17]

Step-by-step explanation:

H0: u = 44.3

Hi : u# 44.3

Z1-0.05/2

Z1-0.025

Z0.975 = 1.96

Z = x-u/s.d/√n

Z= 44.4 -44.3/2.6/√130

Z = (0.1×11.4018)/2.6

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Since the calcalculated value is less than the table value and does not fall in the rejection region we fail to reject the null hypothesis

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3 years ago
PLEASE HELP ASAP!!!<br> solve for the given variable and show your work. 3a-12b=30. solve for b.
olganol [36]

Answer:

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First factor out the common number:3

Then divide both sides by 3

Then simplify 30/3 to 10

Then subtract a to get your answer

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3 years ago
A Stained Glass window it is pictured below the curve lines are semi circles and ABCD is a square with sides 8 feet what is the
pishuonlain [190]
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All swimming equipment is on sale with a 30% discount. A snorkeling set regularly sells
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4 0
2 years ago
Find the value of x and y
vova2212 [387]

let's first off take a look at the <u>tickmarks</u>, three <u>side tickmarks</u>, so all those 3 sides are equal, all have a length of y - 25, so is an equilateral triangle.

there are two <u>angle tickmarks</u>, meaning those two angles are equal, wait a second! if those two angles are equal, that means is an isosceles triangle.

now, in an equilateral triangle, all sides are equal, but also all angles are equal, since the sum of all interior angles is 180°, then each angle is really 60°.

let's notice that angle on the upper-left-corner, is a right-angle, but 60° are on the equilateral triangle, and so the remaining 30° must be on the isosceles triangle.

the isosceles triangle has then a vertex of 30°, and twin angles, the twin angles let's say are each a° so then

30° + a° + a° = 180°

30 + 2a = 180

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well, we know that y = 75, so the sides with the tickmark are then (75) - 25 = 50 = x.

5 0
3 years ago
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