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olchik [2.2K]
3 years ago
11

Which shows an angle that is approximately 40°? A. B. C.

Mathematics
1 answer:
umka21 [38]3 years ago
6 0
It's the first image.
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A wire is bent into semicircles. How long is the wire to the neared hundredth? The diameter is 32 cm
docker41 [41]

Answer:

200.96

Step-by-step explanation:

2πr is the perimeter or circumference of a circle

.

diameter is 32cm so radius=16cm

2*3.14*16=100.48cm is long

5 0
3 years ago
X^2+10x+19=0 complete the square PLEASE EXPLAIN
wlad13 [49]

Answer:

Step-by-step explanation

In the form ax^2+bx+c

a x c should equal two factors of b

However, in this equation

1 x 19 has no factors that = 10

so you must use the Quadratic Formula which is,

x = \frac{-b+-\sqrt{b^2-4ac} }{2a}

so the answer should be

x = \frac{-10+-\sqrt{10^2-4(1)(19)} }{2(1)}

x = \frac{-10+-\sqrt{24} }{2}

x = \frac{-10+2\sqrt{6} }{2}      and    x = \frac{-10-2\sqrt{6} }{2}

8 0
3 years ago
Provide one reason for when you can use the distance formula.
Pepsi [2]

Answer:

Draw a right triangle such that the distance between the two points is the hypotenuse. Hence, When you use the distance formula, you are calculating the length of the Hypotenuse of a right triangle.

6 0
3 years ago
I need help on number 5 a&b plz
ollegr [7]
A: Distance between the Sycamore cabin to the Oak cabin is 30 yards. 
B: If she walks to the Mess Hall first she'll be 20 yards closer to the Elm cabin.
5 0
3 years ago
M is the centroid (center of gravity) of △ABC, line k goes thru M and intersects AB and AC . The distances of the vertices B and
lana [24]

Answer:

  30

Step-by-step explanation:

The midpoint of BC will be a distance from line k that is the average of the distances of B and C: (17+13)/2 = 15. Call that midpoint P. We know distance MP is half of distance MA. This same relationship will hold with respect to the distances from P and A to any line through M. That is, the distance from line k (through M) is twice the distance from P to line k: 30 units.

5 0
3 years ago
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