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Digiron [165]
3 years ago
6

Which statements are true about three-dimensional figures? Select two options. A sphere has no bases. A prism must have a triang

ular or rectangular base. A square pyramid must have lateral faces that are squares. A triangular prism has two triangular bases and four triangular lateral faces. The lateral face of a cylinder is in the shape of a rectangle.
Mathematics
2 answers:
Maru [420]3 years ago
6 0

Answer:

- A sphere has no bases.

- A triangular prism has two triangular bases and four triangular lateral faces.

tiny-mole [99]3 years ago
4 0

Answer:

The 2 correct answers are that a sphere does not have a base and that the lateral face of a cylinder is a rectangle.

Please mark me as brainliest. I am trying to have at least one brainliest answer.

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In the isosceles △ABC m∠ACB=120° and AD is an altitude to leg BC . What is the distance from D to base AB , if CD=4cm?
snow_lady [41]

If ΔACB is an isosceles triangle, then ∠A ≅ ∠B and AC ≅ CB

Since ∠C = 120° and ∠A + ∠B + ∠C = 180°, then ∠A = 30° and ∠B = 30°

Next, look at ΔADB.  ∠A + ∠D + ∠B = 180°, so ∠A + 90° + 30° = 180° ⇒ ∠A = 30°

Now look at ΔADC.  Since ∠A = 30° in ΔACB, and ∠A = 60° in ΔADB, then ∠A = 30° in ΔADC <em>per angle addition postulate.</em>

Now that we have shown that ΔADB and ΔADC are 30-60-90 triangles, we can use that formula to calculate the side lengths.

CD = 4 cm (given) so AC = 2(4 cm) = 8 cm

Since AC ≅ BC, then BC = 8 cm. Therefore, BD = 4 + 8 = 12 <em>by segment addition postulate.</em>

Lastly, look at ΔBHD.  Since ∠B = 30° and ∠H = 90°, then ∠D = 60°. So, ΔBHD is also a 30-60-90 triangle.

BD = 12 cm, so HD = \frac{12}{2}cm = 6 cm

Answer: 6 cm



8 0
3 years ago
Read 2 more answers
Amanda bought new shoes and she received a 25% off discount. If the discount was $17, what was the original price of the shoes?
Ede4ka [16]

Answer:

68

Step-by-step explanation:

6 0
2 years ago
I need help please on this
Free_Kalibri [48]
Draw
Left side:
(1)Square=1 (1)Triangle=5 (1)Circle=6
1+5=6+6=12
Right side: (2)Circle=6
6+6=12
5 0
3 years ago
1. The drama club sells 200 pounds of fruit to raise money. The fruit is sold in
KatRina [158]

I got the wrong answer. I don't want to keep this up just in case anyone needs the answer to this question again. But I can't delete my answer so I'll just leave this. Have a nice day tho. Sorry about that :(

4 0
3 years ago
20% of the rose Annette picked from a rose garden were red if she picked 10 red roses how many roses did she pick from the garde
horrorfan [7]

Answer:

Option A

Annette picked  50 roses  from the garden

Step-by-step explanation:

Let us understand the problem, designating letters to represent unknown quantities.

Let the total number of roses = x

20% of the roses were red means that 20% of x = red

Since the number of red roses = 10,

we will have that 20% of x = 10

mathematically, we will have

\frac{20}{100} \times x = 10\\x= \frac{1000}{20}= 50

hence, Annette picked  50 roses  from the garden

7 0
3 years ago
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