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vovangra [49]
3 years ago
15

Use the distributive property to exspand the algebraic expression 9(a - 3b)

Mathematics
2 answers:
Gwar [14]3 years ago
6 0

9a-27b you must multiply 9 to everything



Assoli18 [71]3 years ago
3 0

Answer:

You just distribute 9 inside the parentheses.

9(a - 3b)

9a - 27b

Hope this helps!


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You should have an angle of elevation of 30 degrees.
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Help me please with explanation
8_murik_8 [283]

Step-by-step explanation:

angle AOB = x+3

angle AOC = 2x + 11

angle BOC = 4x-7

angle AOC = angle AOB + angle BOC

=> 2x +11 = (x+3) + (4x-7)

2x +11 = 5x - 4

=> 3x = 15

x = 5

subst x = 5 in the given formulas

angle AOB = x +3 =8

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angle BOC = 4x - 7 = 13

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3 years ago
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Answer:

Its C: 41°

Step-by-step explanation:

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URGENT!! NEED THIS IN TWO HOURS. DUMB ANSWERS WILL BE REPORTED ALTHOUGH I UNDERSTAND IF YOU MAKE A SIMPLE MISTAKE IN YOUR CALCUL
Andre45 [30]

Yo sup??

The given points are (1,1),(1,3) and (9,2)

equation of circle is

8x²+8y²+ax+by=0

let us plug in (1,1) in the equation we get

8+8+a+b=0

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let us now plug in (1,3) in the equation

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let us. now solve the two equation in terms of a and b

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Hope this helps

6 0
3 years ago
A random sample of 184 students at South High School were surveyed on whether they would prefer going to a movie or a concert. T
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The correct statements are as follows;

42% of the students prefer a concert over a movie.

A greater ratio of 11th graders prefer a concert to a movie

The difference in the percent of students who prefer a movie over a concert is 16%

Given that

A random sample of 184 students at South High School was surveyed on whether they would prefer going to a movie or a concert.

              10th   11th   12th   total

Movie       .18    .16     .24    .58

Concert     .15     .18     .09   .42

Total           .33     .34    .33    1

According to the question

The marginal relative frequency for 10th graders is 0.18.  

This is an incomplete statement.

The marginal frequency is a number, not a percent.

42% of the students prefer a concert over a movie.  

42% preferred a convert to the 58% who preferred a movie.  

This statement is True.

A greater ratio of 11th graders prefers a concert to a movie.

18/100 concert to 16/100 for the movie for 11th graders.

\rm = (0.58 -0.42) \times  100 \\\\ =0.16 \times 100\\\\= 16 \ percent

 More 12th graders were surveyed than any other grade level.

There were more 11th graders surveyed (34%) to (33%) for 12 graders False

The difference in the percent of students who prefer a movie over a concert is 16%.  

To know more about Probability click the link given below.

brainly.com/question/25996348

4 0
2 years ago
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