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tatiyna
3 years ago
15

Please help me!?!??!?!?!?!?!

Mathematics
2 answers:
o-na [289]3 years ago
3 0
What do you need help with?
BabaBlast [244]3 years ago
3 0
Which part of the question do you need help with.
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Can someone help me out with this question? The question is about circle diameters. I'm unfamiliar with finding the length of th
Nady [450]

Answer:

a) m arc AD = 145

b) D = 10

Step-by-step explanation:

a) mAD can be found because triangle OCM can be shown to be congruent to triangle ODM.

The angle AOD is supplementary to DOB which we just showed to be congruent to the known 35° angle COB. Therefore AOD = 180 - 35 = 145°

The arc length is identical to the arc angle when measured between radii.

b) The radius OC = √(OM² + (CD/2)² = √(3² + 4²) = 5.

Diameter is twice radius = 10

7 0
3 years ago
In this diagram, BAC~EDF. If the area of BAC=15 in2, what is the area of EDF? 4, 5.
lesya692 [45]

Answer:

9.6 square inches.

Step-by-step explanation:

We are given that ΔBAC is similar to ΔEDF, and that the area of ΔBAC is 15 inches. And we want to determine the area of ΔDEF.

First, find the scale factor <em>k</em> from ΔBAC to ΔDEF:

\displaystyle 5 k = 4

Solve for the scale factor <em>k: </em>

<em />\displaystyle k = \frac{4}{5}<em />

<em />

Recall that to scale areas, we square the scale factor.

In other words, since the scale factor for sides from ΔBAC to ΔDEF is 4/5, the scale factor for its area will be (4/5)² or 16/25.

Hence, the area of ΔEDF is:

\displaystyle \Delta EDF = \frac{16}{25}\left(15\right) = 9.6\text{ in}^2

In conclusion, the area of ΔEDF is 9.6 square inches.

5 0
3 years ago
7. Two measures of two angles of a triangle are 68° and 70°. Explain how to find the measure of the third angle.
Akimi4 [234]
68+70=180
=138=180
=180-138
=42 degrees (using angle sum property of triangles

Hope this helps you
3 0
3 years ago
Quadrilateral WXYZ is the result of a translation of quadrilateral ABCD . AB¯¯¯¯¯ is parallel to DC¯¯¯¯¯ in the pre-image. Drag
tigry1 [53]
The corresponding segments WX and ZY in the image are parallel.

When a shape is translated from location to another, the size and shape of the figure do not change. Therefore, lines that are corresponding are still parallel.
5 0
3 years ago
Sarah bought 3 pounds of apples for $6 . How much did each pound of apples cost ?
viva [34]

Answer:

A

Step-by-step explanation:

6/3 = 2

6 0
3 years ago
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