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Blababa [14]
3 years ago
13

Solve for a in the diagram below.

Mathematics
2 answers:
Marat540 [252]3 years ago
8 0

Answer:

20

Step-by-step explanation:

Angles form a right angle, hence they add up to 90

x + 2x + x + 10 = 90

4x + 10 = 90

4x = 80

x = 20

Tresset [83]3 years ago
7 0

Answer:

20

Step-by-step explanation:

We can tell from the little square in the corner that this is a 90 degree angle, so all three of the expressions of x should add up to 90:

x + 2x + (x + 10) = 90

Combine like terms:

4x + 10 = 90

4x = 80

Divide by 4:

x = 80/4 = 20

The answer is 20.

Hope this helps!

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What algebraic expression must be added to the sum of 3x2 +4x+8 and 2x2−6x+3 to give 9x2−2x−5 as the result?
Gnom [1K]

4x² - 16 is the algebraic expression that must be added to get the result as 9x²- 2x - 5.

<u>Step-by-step explanation:</u>

The question is asked for the algebraic expression must be added to the sum of 3x²+4x+8 and 2x2−6x+3 to give 9x²- 2x - 5 as the result.

Therefore,

The first step is to find of sum of 3x²+4x+8 and 2x²-6x+3.

To find the sum :

3x²+4x+8

<u>2x²-6x+3 </u>

<u>5x²-2x+11</u>

The sum is 5x²-2x+11.

Now, the second step is to subtract 5x²-2x+11 from the result 9x²- 2x - 5.

  9x²- 2x - 5

- <u>(5x²-2x+11)</u>

  <u> 4x²    -16 </u>

Thus, 4x²-16 is the algebraic expression that must be added with 5x²-2x+11 to get a result of 9x²- 2x - 5.

3 0
3 years ago
If 14 gallon of paint covers 13 of a wall in Luna's bedroom, how many gallons of paint does she need to cover 1 wall?
dimaraw [331]

Answer:

182 gallons tell me if im right

Step-by-step explanation:

14 times 13 = 182 gal

5 0
2 years ago
Choose impossible,unlikely,as likely as not, or certain to describe the event. The spinner lands on numbers 2,3,or 4.
Vaselesa [24]
2 is the right answer
7 0
2 years ago
The box plot below represents some data set. What is the value of the median?
OLEGan [10]

Answer:

80

Step-by-step explanation:

Look at the box plot and look at each line.

The first line that is all the way to the left, that is the Quartile 1.

The last line all the way to the right, that is Quartile 3.

Now lets look at the box part.

The beggining of the box is the minimum.

The ending of the box is the maximum.

The middle line is the median.

How I remember it is Median=Middle

Hopw this hels :D

8 0
2 years ago
Select the correct answer.
earnstyle [38]

The equations are both the same with a slope of 2 and y-intercept of 3.

<h3>Solution to system of equation</h3>

A line is the distance between two points. Given the equations below;

2y - 4x = 6

y = 2x + 3

___________

y - 2x = 3

y = 2x + 3

The equations are both the same with a slope of 2 and y-intercept of 3. The graph of the equation is plotted below.

Learn more on equation of a line here: brainly.com/question/13763238

#SPJ1

3 0
2 years ago
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