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4 years ago

I need help with this problem (it's number 3)

Mathematics

1 answer:

Georgia [21]4 years ago

7 0

A proportion can be written as 2 equal fractions a/b =c/d or it can be written using a colon: a:b = c:d

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2. How are rectangles and paralelograms diferent?

Gwar [14]

Answer:

A parallelogram has two parallel pairs of opposite sides. A rectangle has two pairs of opposite sides parallel, and four right angles. It is also a parallelogram, since it has two pairs of parallel sides.

5 0

3 years ago

a class has six boys and 14 girls what is the ratio in simplest form that compares number of boys the number of students

-BARSIC- [3]

Answer:

3:10

Step-by-step explanation:

Boys- 6

Girls- 14

Total students- 20

Boys:Total students

6 : 20

Simplify:

6/2=3

20/2=10

This is written as:

3:10

➴Hope this helps!

➸CloutAnswers

6 0

3 years ago

Refer to the previous exercise. The researchers wanted a sufficiently large sample to be able to estimate the probability of pre

Maru [420]

Answer:

The large sample n = 117.07

Step-by-step explanation:

Step(i):-

Given that the estimate error (M.E) = 0.08

The proportion (p) = 0.75

q =1-p = 1- 0.75 =0.25

Level of significance = 0.05

Z₀.₀₅ = 1.96≅ 2

Step(ii):-

The Marginal error is determined by

M.E = $\frac{Z_{0.05} \sqrt{p(1-p)} }{\sqrt{n} }$

$0.08 = \frac{2 X \sqrt{0.75(1-0.75)} }{\sqrt{n} }$

Cross multiplication , we get

$\sqrt{n} = \frac{2 X \sqrt{0.75(1-0.75)} }{0.08 }$

√n = $\frac{2 X0.4330}{0.08} = 10.825$

squaring on both sides , we get

n = 117.07

Final answer:-

The large sample n = 117.07

6 0

3 years ago

The work of a student to find the dimensions of a rectangle of area 6 + 8x and width 2 is shown below:

tatiyna

Answer:
Step 2; 2(3) = 2(4x)

5 0

3 years ago

Read 2 more answers

Help me with C number please. Show me how did you do that. It’s due in 30 minutes.

Paha777 [63]

I’m not 100% sure but isn’t it x2 +xy +y2?

6 0

3 years ago

Read 2 more answers