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3 years ago

Estimate the square root of 27 to the nearest whole number show how you got the answer

Mathematics

1 answer:

Trava [24]3 years ago

8 0

Answer:

Step-by-step explanation:

5²=25 and 6²=36

25 is way closer to 27 than 36

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The left and right page number of an open book are two consecutive integers whose sum is 275 find these page numbers

kykrilka [37]

X= first number x+1= second number 2x+1=275 2x=274 x+274 x=137 first number 137+1=138 second number

5 0

3 years ago

Subtract 17 from x which equals

Jet001 [13]

The answer to this problem is x - 17.

8 0

3 years ago

A researcher is planning to compare the effects of two different types of lights on the growth of bean plants. She expects that

kicyunya [14]

Answer:

The sample size is $n = 36$

Step-by-step explanation:

From the question we are told that

The sample standard deviation is $s = 1.5$

The mean difference of the two groups is $\=x _ 1 - \=x_2 = 1$

The standard error is $SE = \frac{ \= x_1 - \= x_2}{4}$

=> $SE = \frac{1}{4}$

Let assume that the confidence level is 95% hence the level of significance is

$\alpha = (100-95)\%$

=> $\alpha = 0.05$

So the critical value of $\frac{\alpha }{2}$ obtained from the normal distribution table is

$Z_{\frac{\alpha }{2} } = 1.96$

Generally the margin of error is mathematically evaluated as

$E = Z_{\frac{\alpha }{2} } * SE$

$E = 1.96 * \frac{1}{4}$

$E = 0.49$

Generally the sample size is mathematically represented as

$n =[ \frac{Z_{\frac{\alpha }{2} * s^2}}{E}]^2$

=> $n = [\frac{1.96 * 1.5}{0.49} ]^2$

=> $n = 36$

6 0

3 years ago

When two equal signs is placed between two algebraic expressions a what is formed

Vikki [24]

If we have two sides equal each other, then we called the statement "equation"

Example:

2x + 3 = 5x - 2 is called an equation

2x + 3 is an algebraic expression

5x - 2 is an algebraic expression

When we put = sign between them, they called an equation

Then when two equal signs are placed between two algebraic expressions, they formed an equation

The answer is an equation

4 0

1 year ago

(x-yi)(3+5i) is the conjugate of 6+24i

Nataly_w [17]

Answer:

x=-3

y=3

(-3-3i)(3+5i)

Step-by-step explanation:

$(x-yi)(3+5i)\\=3x+5xi-3yi+5y\\=(3x+5y)+(5x-3y)i\\$

and we have that must equal

6-24i

3x+5y=6

5x-3y=-24 and if we work it we found out that the solutions are

x=-3 and

y=3

5 0

3 years ago