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Tems11 [23]
2 years ago
7

In a random survey of 125 students, 27 said their favorite color is red and 40 said their favorite color is green. Based on this

sample predict how many of 1,000
students have a favorite color other than red or green.
Mathematics
1 answer:
Pie2 years ago
3 0

Answer:

464

Step-by-step explanation:

\frac{27}{125} = \frac{216}{1000}

\frac{40}{125} = \frac{320}{1000}

216+320 = 536

1000-536 = 464

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2 years ago
A solid oblique pyramid has an equilateral triangle as a base with an edge length of 4 cm and an area of 12 cm2. What is the vol
Pavel [41]

Solution:

Let me define pyramid first.A pyramid is a Polyhedron , whose base  can be any polygon and it's faces are triangular which meet at a point called vertex.

Volume of Pyramid =  \frac{1}{2}\times{\text{Area of Base}\times{\text{Height}

Side of base which is an equilateral triangle= 4 cm

Area of whole pyramid = 12 square cm

Area of Equilateral triangle having side 4 cm=\frac{\sqrt3}{4}\times(Side)^2=\frac{\sqrt3}{4}\times(4)^2=4 \sqrt3 cm²

So, Area of three triangle which are faces of pyramid = (12 - 4 √3)cm²

Area of triangle = \frac{1}{2} \times (Base)\times(Height)

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Height =\frac{12-4\sqrt3}{2}

Height=(6-2√3) cm

Volume of pyramid = Area of Equilateral triangle which is it's Base × Height of Pyramid

          =4√3 × (6-2√3) cm³

           =(24 √3 -24)

           = 24 (1.732-1)

          =24 × 0.732

          =17.568 cm³



8 0
3 years ago
Read 2 more answers
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Answer:

1/10 or 0.1

Step-by-step explanation:

3/5 of juice split into 6 glasses can be written as

3/5 ÷ 6

See the attached image for help with dividing fractions.

4 0
3 years ago
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vagabundo [1.1K]

Answer:

1 3/4

Step-by-step explanation:

I did 7/8 times 7/1 (7 days as a fraction) = 1 6/8 then i simplified that to 1 3/4

6 0
3 years ago
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