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2 years ago

How do u write a expression

Mathematics

2 answers:

Irina18 [472]2 years ago

8 0

Answer:

Writing an expression is basically like writing the same thing you hear or read ( contains numbers ).

zhuklara [117]2 years ago

3 0

Answer:

<h2><u>it depends on what expression u want </u></h2>

Step-by-step explanation:

An example of a mathematical expression with a variable is 2x + 3. All variables must have a coefficient, a number that is multiplied by the variable. In the expression 2x + 3, the coefficient of x is the number 2, and it means 2 times x plus 3.

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Consider the letters of the word STRIVE are written on individual cards are placed in a box.

Aleksandr [31]

Answer: 1/6

Explanation:

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3 years ago

The circle shown below has AB and BC as its tangents: AB and BC are two tangents to a circle which intersect outside the circle

Nadusha1986 [10]

We are given with
arc AC = 130
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360 - 130 = 230
Therefore, according to the theorem on circles, the measure of angle ABC is
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2 years ago

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A teacher was interested in finding out whether a special study program would increase the scores of students on a national exam

bija089 [108]

Answer:

Check the explanation

Step-by-step explanation:

Going by the first attached image below we reject H_o against H_1 if obs. $T > t_{\alpha /2;n-1}$

here obs.T=1.879

$\therefore obs.T \ngtr 2.447=t_{0.025;6}$

we accept $H_o:\mu _{1}=\mu_{2}$ at 5% level of significance.

i.e there is no sufficient evidence to indicate that the special study program is more effective at 5% level of significance.

this problem is simillar to the previous one except the alternative hypothesis.

Let X_i's denote the bonuses given by female managers and Y_i's denote the bonuses given by male managers.

we assume that $X_i \sim N(\mu _{1},\sigma _{1}^{2}) Y_i \sim N(\mu _{2},\sigma _{2}^{2})$ independently

We want to test $H_0:\mu_{1}=\mu_{2} vs H_1:\mu_{1}\neq \mu_{2}$

define $D_i=X_i-Y_i , i=1(1)8$

now $D_i\sim N(\mu _{1}-\mu _{2}=\mu _{D},\sigma _{1}^{2}+\sigma _{2}^{2}=\sigma _{D}^{2}) , i=1(1)8$

the hypothesis becomes

$H_0:\mu_{D}=0 vs H_1:\mu_{D}\neq 0$

in the third attached image, we use the same test statistic as before

i.e at 5% level of significance there is not enough evidence to indicate a difference in average bonuses .

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2 years ago

ASAP BRAINLIEST if correct. Am i correct?

Minchanka [31]

Answer:

C complex

Step-by-step explanation:

a+ bi

a is the real part and bi is the imaginary part

Together they make a complex number

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2 years ago

Which of the following statements are true about 2 to the power of 8? (Select all that apply)

AfilCa [17]

Answer:

It can be read as "eight squared". It can be read as "two raised to the power of eight." It can be written as a multiplication problem with eight factors of 2.

Step-by-step explanation:

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2 years ago

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