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AleksAgata [21]
3 years ago
13

Cam someone help me out please

Mathematics
1 answer:
Sergio039 [100]3 years ago
5 0

Answer:428.67

Step-by-step explanation:

πr (r+square root(h2+r2) plug in the numbers

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Simplify.<br> 2 × (3-1) + 3<br> 007<br> 20<br> 7 8 a<br> 0 10<br> 011
IgorLugansk [536]

Answer:

7

Step-by-step explanation:

2 x (2) + 3

= 4 + 3

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6 0
3 years ago
Triangle ABC has angle measures as shown.
sladkih [1.3K]
As with any triangle, the sum of angles is 180°.

(a)
(x -5) +(3x +30) +35 = 180 . . . . . sum of angles is 180
4x +60 = 180 . . . . . . . . . . . . . . . . collect terms
4x = 120 . . . . . . . . . . . . . . . . . . . . subtract 60
x = 30 . . . . . . . . . . . . . . . . . . . . . . divide by 4


(b)
Angle A = x -5 = 30 -5 = 25

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3 0
3 years ago
MARKING BRAINLIEST AND +50 PTS IF CORRECT!!!!
Sphinxa [80]

Answer:If you have two parallel lines and shift both to the left by the same amount, that does not alter the distance between the lines. Thus, c is correct.

Step-by-step explanation:

4 0
3 years ago
I need help on number 8 and please show how you solved it :))
dmitriy555 [2]

Answer:

32.04% to 2 decimal places.

Step-by-step explanation:

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= (17.3/54) * 100

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8 0
3 years ago
A parabolic arch has a height of 25 feet and a span of 40 feet. How high is the arch 8 feet from each side of the center?
Llana [10]

Answer:

The correct option is;

21 ft

Step-by-step explanation:

The equation of the parabolic arc is as follows;

y = a(x - h)² + k

Where the height is 25 ft and the span is 40 ft, the coordinates of the vertex (h, k) is then (20, 25)

We therefore have;

y = a(x - 20)² + 25

Whereby the parabola starts from the origin (0, 0), we have;

0 = a(0 - 20)² + 25

0 = 20²a + 25 → 0 = 400·a + 25

∴a = -25/400 = -1/16

The equation of the parabola is therefore;

y = (-\frac{1}{16})(x-20)^2 + 25

To find the height 8 ft from the center, where the center is at x = 20 we have 8 ft from center = x = 20 - 8 = 12 or x = 20 + 8 = 28

Therefore, plugging the value of x = 12 or 28 in the equation for the parabola gives;

y = (-\frac{1}{16})(12-20)^2 + 25 = (-\frac{1}{16})(-8)^2 + 25 = 21 \ ft.

4 0
3 years ago
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