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krek1111 [17]
3 years ago
13

1.The radii of two circles are in the ratio of 3 to 1. Find the area of the smaller circle if the area of the larger circle is 2

7 sq. in.
9
6
3
@lilbeastslater kaneki is hella spicy
Mathematics
2 answers:
zmey [24]3 years ago
8 0

It’s 9. 3x9 is 27. Nothing else times anything equals 27, excluding decimals.

raketka [301]3 years ago
7 0

Answer:

3 in²

Step-by-step explanation:

The linear ratio = 3 : 1, hence

The area ratio = 3² : 1² = 9 : 1

let x be the area of the smaller circle, then

\frac{9}{1} = \frac{27}{x} ( cross- multiply )

9x = 27 ( divide both sides by 9 )

x = 3

Area of the smaller circle = 3 in²

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Solve the following for y:<br> p(t + 4) = 2y
dimulka [17.4K]

Answer:

the answer is y =p(t + 4)/2

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3 years ago
A company manufactures aluminum mailboxes in the shape of a box with a half-cylinder top. The company will make 1960 mailboxes t
MaRussiya [10]

Answer:

  7088 m²

Step-by-step explanation:

The area of the half-cylinder is half the area of a cylinder with the same dimensions. This half-cylinder has a radius of 0.3 m and a length of 0.8 m, so its area is ...

  A = πr(r +l) = π(0.3 m)(0.3 m+0.8 m) = 0.33π m² ≈ 1.0362 m²

The area of the bottom part of the box is the sum of its lateral area and its base area.

  lateral area = Ph = (2(0.6m +0.8m))(0.75 m) = 2.1 m²

  base area = lw = (0.8 m)(0.6 m) = 0.48 m²

The total area is then ...

  total area = half-cylinder area + lateral area + base area

  = 1.0362 m² +2.1 m² +0.48 m²

  = 3.6162 m²

__

The area for 1960 mailboxes will be 1960 times this area, or ...

  area for week's production = 1960 × 3.6162 m² = 7087.752 m²

It will take about 7088 square meters of aluminum to make these mailboxes.

5 0
3 years ago
Six friends each use a $2-off coupon to buy themselves a movie ticket. They spend a total of $42. What is the price of one movie
SIZIF [17.4K]

Answer:

The Answer is $9

Step-by-step explanation:

What i did was multiplied 7 times 6 and that equaled 42. They all used 2 dollar off coupons. You asked what was the price of one movie ticket without the coupon, so i added $2 to 7 and got $9

7 0
3 years ago
Read 2 more answers
What common denominator would you use to find equivalent, fractions to compare 4/8, 3/4, and 1/2?
Fofino [41]

Answer:

LCD = 8

Step-by-step explanation:

4/8=4/8

3/4= 6/8

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6 0
2 years ago
Read 2 more answers
Find missing angle.
Vsevolod [243]
I don’t really know exactly to what degree you need to put in your solution. But I rounded to the nearest tenth degree.
A = 112 degrees
B= 28 degrees (180-112-40 bc all sides of a triangle must equal 180)
C= 40
a= 27.6 (this is the side opposite of angle A)
b= 14 (side opposite b)
c= 19.2 (side opposite c)

HOW TO SOLVE:
c= law of sines, so c/sin(40) = 14/sin(28), multiply both sides by sin(40) so c can be isolated and solved for. c = 14sin(40)/sin(28). Plug into calculator then get answer. c is approximately 19.2.
a = law of sines again, so a/sin(112) = 14/sin(28). Multiply both sides again by sin(112) then solve. a = 14sin(112)/sin(28). Calculator again. a is around 27.6
7 0
4 years ago
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