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3 years ago

Is (x+5)2 equivalent to 2x2+10x +10? Explain why or why not?

Mathematics

1 answer:

Rzqust [24]3 years ago

4 0

Answer:

Step-by-step explanation:

no because its equal to 2x+10

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0.65 more than -4.35

laiz [17]

Answer:

-3.7

Step-by-step explanation:

1. More = Addition

2. 0.65 + -4.35 = -3.7

4 0

2 years ago

Read 2 more answers

9) Find the equation of a mirror line to the points Q (1,2) and Q1 (-1,2)<br><br>

Harman [31]

Answer:

x = 0

Step-by-step explanation:

Q(1, 2 ) and Q1(- 1, 2 ) are both 1 unit from the y- axis

Q is 1 unit to the right of the y- axis and Q1 is 1 unit is 1 unit to the left of the y-axis, thus

The y- axis is the mirror line with equation x = 0

8 0

4 years ago

Is the product of greater or less than ? Is it

lana66690 [7]

Step-by-step explanation:

answer criss-cross and divide by 5/8

4 0

3 years ago

Write the three ratios that are equal to the ratios given: there is 6 i need answers for all of them please so i will give you a

Klio2033 [76]

Answer:

1. 6:10

2. 1:2

3. 1:3

4. 4:5

5. 3:4

6. 5:6

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers

All 6 members of a family work. Their hourly wages (in dollars) are the following.37, 38, 39, 40, 39, 11Assuming that these wage

tiny-mole [99]

We have a sample that in fact represents the population.

We have to calculate the standard deviation of this population.

The difference between the standard deviation of a population comparing it to the calculation of the standard deviation of a sample is that we divide by the population side n instead of (n-1).

We have to start by calculating the mean of the population first:

$\begin{gathered} \mu=\dfrac{1}{n}\sum ^n_{i=1}\, x_i \\ \mu=\dfrac{1}{6}(37+38+39+40+39+11) \\ \mu=\dfrac{204}{6} \\ \mu=34 \end{gathered}$

Now, we can calculate the standard deviation as:

$\sigma=\sqrt[]{\dfrac{1}{n}\sum^n_{i=1}\, (x_i-\mu)^2}$ $\begin{gathered} \sigma=\sqrt[]{\dfrac{1}{6}((37-34)^2+(38-34)^2+(39-34)^2+(40-34)^2+(39-34)^2+(11-34)^2)} \\ \sigma=\sqrt[]{\frac{1}{6}(3^2+4^2+5^2+6^2+5^2+(-23)^2)} \\ \sigma=\sqrt[]{\frac{1}{6}(9+16+25+36+25+529)} \\ \sigma=\sqrt[]{\frac{1}{6}(640)} \\ \sigma\approx\sqrt[]{106.67} \\ \sigma\approx10.33 \end{gathered}$

Answer: the standard deviation of this population is approximately 10.33

3 0

2 years ago