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Gwar [14]
3 years ago
7

Find the product using identities (3x – 2)(3x+9)

Mathematics
2 answers:
lora16 [44]3 years ago
6 0

Answer:

9x^2+21x-18

Step-by-step explanation:

Rom4ik [11]3 years ago
4 0
9x^2+21x-18
3x*3x = 9x^
3x*-2= -6x
9*3x= 27x
27x-6x=21x
9*-2=-18
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The sum of 12 and the product of 7 and a number is 40. What is the number? three less than the product of 6 and a number is 45.
nataly862011 [7]

Answer: 4 and 8

Step-by-step explanation:

1. 12+7x=40

7x=28

x=4

2. 6x-3=45

6x=48

x=8

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3 years ago
Recognize and write symbols for perpedicular and parallel lines 4th grade
igor_vitrenko [27]
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You read 9.75 pages in your science book and 24.5 pages of a play for English class. It takes you 1.2 minutes to read each page
Rama09 [41]

Answer:

9.75*1.2= 11.7min (time spent reading in science)

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4 0
3 years ago
Please solve the right triangle below. Round the decimals to the nearest tenth.
aniked [119]

Find AB using Pythagorean Theorem,

AB=\sqrt{12^2+9^2}=15.

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B=\tan^{-1}(9/12)=36.9^{\circ}.

Hope this helps.

7 0
3 years ago
Which pairs of angles in the figure below are vertical angles?
ch4aika [34]

Answer: Option A and Option C.

Step-by-step explanation:

For this exercise it is important to know the definition of "Vertical Angles".

When two lines intersect or cross, there are a pair of angles that share the same vertex and they are opposite each other. This pair of angles are known as "Vertical angles".

By definition, Vertical angles are congruent, which means that the have the equal measure.

In this case, you can observe in the picture provided in the exercise that the line TI and the line WN intersect each other at the point S.

You can identify that the pair of angles that are opposite to each other and share the same vertex are the shown below:

\angle ISN  and \angle TSW

\angle TSN and \angle ISW

6 0
4 years ago
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