Find the perimeter and area of the square.

Mathematics

2 answers:

Ilya [14]4 years ago

8 0

Answer:

Step-by-step explanation:

10*4

i havnt done this in a while but this is what i got

torisob [31]4 years ago

4 0

Answer: the answer would be 40

Step-by-step explanation:

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Just before a referendum on a school budget, a local newspaper polls 402 voters to predict whether the budget will pass. Suppos

Sliva [168]

Answer:

21.21%

Step-by-step explanation:

Assume that proportion of support follows normal distribution.For resulting in defeat the proportion of support should less than 0.5.Given that the proportion of support is p= 0.52.

Sample size(n)= 402

We know that standard deviation is given as

$\sigma = \sqrt {\dfrac {p(1-p)}{n}}$

Now by putting the values

$\sigma = \sqrt {\dfrac{0.52\times 0.48}{402}}$

σ=0.0249

Proportion of support follows normal distribution with mean is 0.52 and standard deviation is 0.0249

We know that $Z=\dfrac{\bar{X}-\mu }{\sigma }$

$Z=\dfrac{0.5-0.52 }{0.0249}$

Z= -0.80

So P(Z<-.80) =0.2118 from standard table.

So the probability of news paper to predict defeat is 21.21%

7 0

3 years ago

Choose the correct simplification of the expression a to the 7th power times b to the 8th power all over a to the 4th power time

pantera1 [17]

The simplification of the expression will be as follows:
(a^7b^8)/(a^4b^4)
According to the rules of indices, when you divide numbers with the same base, it's the same as subtracting their powers. Hence we shall have:
(a^7b^8)/(a^4b^4)
=(a^(7-4))(b^(8-4))
=a^3b^4
the answer is a^3b^4

6 0

3 years ago

Read 2 more answers

Please help me solve and you'll get a brainlist

jasenka [17]

Y=4x+1
Let y=0
0=4x+1
4x=-1
x=-1/4

Let x=0
Y=4*0+1
Y=0+1
Y=1

Therefore, the ordered pair is (-1/4, 1)

4 0

3 years ago

The ratio of the length to the width of a map is 5 to 2. The map is exactly 15 inches in length. What is the width of the map

allochka39001 [22]

The answer to your question is 6 inches.

3 0