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Rzqust [24]
2 years ago
14

Which phrase best completes the sentence?

Mathematics
2 answers:
kramer2 years ago
7 0
I think the best answer would be things that can be naturally replaced in a short period of time
alex41 [277]2 years ago
6 0

Answer:

things that can be naturally replaced in a short period of time

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The circumference of a circle is 78π cm. Find the diameter, the radius, and the length of an arc of 140°.
jasenka [17]
 The correct answer is the option D, which is: <span>D. 78 cm; 39 cm; 30.3π cm
 The explanation is shown above:
 1-The formula for calculate the circumference of a circle is:
 C=2</span>πr
 78π=2πr
 2- The radius is:
 r=78π/2π
 r=39 cm
 3- The diameter is:
 D=39 cm x 2
 D=78 cm
 4- The arc length is:
 arc length=(140°π/180°)(39 cm)
 arc length=30.3π cm
 
5 0
3 years ago
Are two isosceles triangles always similar? Explain. (1 point)
lara [203]

Answer:

No, because the ratios of the sides that form the vertex angles are the​ same, but the vertex angles may not be congruent.

Step-by-step explanation:

I just took the quick check

8 0
3 years ago
The angles in a triangle are in the ratio 1:2:3. Show that the triangle is a right - angled triangle.
Alja [10]

Answer:

Angles in a triangles add up to 180°

Respectively 1 : 2 : 3 is going to be 1 x , 2 x and 3 x so,

1 x + 2 x + 3 x = 180°

⇒ Simplify

6 x = 180°

⇒ Divide by 6 on both sides to isolate x

x = 30°

Since the ratio was 1 x : 2 x : 3 x and x is 30°,

30 : 60 : 90

And since there is a 90° angle, it is a right - angled triangle

4 0
3 years ago
Mr.Davis's students were surveyed on their favorite subject. One fifth prefer math, 0.35 prefer social studies, and 45% prefer r
lara [203]

its already in order


7 0
3 years ago
Read 2 more answers
Help please??!?? i don’t understandddddd
Zina [86]

Answer:

I think the answer is -\frac{u}{6}

Step-by-step explanation:

thats the answer i got in math.way

3 0
3 years ago
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