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vampirchik [111]

2 years ago

8

Select the postulate that is illustrated for the real numbers. 2(x + 3) = 2x + 6 The commutative postulate for multiplication Mu

ltiplication identity The addition inverse postulate Commutative postulate for addition The distributive postulate The addition of zero postulate The multiplication inverse

2 answers:

madam [21]2 years ago

4 0

Answer:

Step-by-step explanation:

Postulate 5: If two planes intersect, then their intersection is a line.

Serhud [2]2 years ago

3 0

Answer with explanation:

The Mathematical Expression which is given here ,

2 × (x+3)= 2 x + 6

We call this property as Distributive property of Multiplication with respect to Addition.

That is, →a × (b+c)=a × b + a × c, where ,a , b and c are any three real numbers.

We call it : ⇒The distributive postulate.

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YOOO PLEASE HELPPPP!!!!

Evgesh-ka [11]

Given:

Base length of triangle = 40 units

Height of triangle = 9 units

Length of hypotenuse of triangle = 41 units

To find:

Find the value of Tan A

Steps:

Tan of an angle is equal to the opposite length by adjacent length.

So,

Tan A = $\frac{opposite}{adjacent}$

Tan A = $\frac{9}{40}$

Tan A = 0.225

Therefore, the exact value of Tan A is 0.225.

Happy to help :)

If you need any help, feel free to ask

4 0

2 years ago

umka2103 [35]

Answer:

Rhombus

Step-by-step explanation:

it's like a diamond but it's a little bit thicker

8 0

2 years ago

A sales person is given a choice of two salary plans. Plan 1 is a weekly salary of 700 plus 4% commission of sales. Plan 2 is a

bezimeni [28]

Let 's' represent the amount of sales.

Plan 1:

$\text{ \$700 + (4\% of s)}$ $\begin{gathered} \text{ \$700+(}\frac{\text{4}}{100}\times s) \\ \text{ \$700+(0.04}\times s)=\text{ \$700}+0.04s \end{gathered}$

Plan 2:

$12\text{ \% of s}$ $\begin{gathered} \frac{12}{100}\times s \\ 0.12\times s=0.12s \end{gathered}$

Equating the two plans together and solving for the amount of sales,

$\begin{gathered} \text{Plan 2=Plan 1} \\ 0.12s=\text{ \$700+0.04s} \\ \end{gathered}$

Collecting like terms,

$\begin{gathered} 0.12s-0.04s=\text{ \$700} \\ 0.08s=\text{\$700} \end{gathered}$

Divide both sides by 0.08,

$\begin{gathered} \frac{0.08s}{0.08}=\frac{\text{ \$700}}{0.08} \\ s=\text{ \$8750} \end{gathered}$

Hence, the amount of sales is $8,750.

6 0

10 months ago

The number of accidents per week at a hazardous intersection varies with mean 2.2 and standard deviation of 1.4. The distributio

posledela

Answer:

Approximate probability that $\overline{X}$ is less than 2 = 0.1515

Step-by-step explanation:

Given -

Mean $(\nu )$ = 2.2

Standard deviation $(\sigma )$ = 1.4

Sample size ( n ) = 52

Let $\overline{X}$ be the mean of accidents per week at the intersection during one year (52 weeks) .

probability that $\overline{X}$ is less than 2 =

$P(\overline{X}< 2)$ = $P(\frac{\overline{X} - \nu }{\frac{\sigma }{\sqrt{n}}}< \frac{2 - 2.2 }{\frac{1.4}{\sqrt{52}}})$ Putting $(Z =\frac{\overline{X} - \nu }{\frac{\sigma }{\sqrt{n}}})$

= $P(Z< - 1.03)$ ( Using Z table )

= 0.1515

7 0

2 years ago

Jose needs to memorize words on a vocabulary list for French class. He has memorized 20 of the words, which is four-fifths of th

Stella [2.4K]

Answer:

25

Explanation:

In order to solve this the easiest way you can use equivalent fractions.

$\frac{4}{5} = \frac{20}{?}\\$

Since 4 times 5 equals 20 we can multiply 5 times 5 to get our answer.

$\frac{4}{5} * \frac{5}{5} = \frac{20}{25}$

25 is the answer. But, if we couldn't have gotten to 20 through the multiplication we could use a proportion. That would look like the initial problem but instead of a "?" we would use a variable. I will use <em>t</em> for total.

$\frac{4}{5} = \frac{20}{t}\\$

So now we have our problem set up. The next step is to cross multiply. 4 by <em>t</em> and 5 by 20.

$4t = 5 * 20\\4t = 100\\$

And now we can solve it like a normal algebra problem.

$\frac{4}{4}t = \frac{100}{4}\\t = 25$

Either way, we get 25.

5 0

2 years ago