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3 years ago

What expression is equivalent to (2a - 7) + 5(3 - a)

Mathematics

1 answer:

Colt1911 [192]3 years ago

7 0

Answer:

Step-by-step explanation:

2a-7+15-5a

2a-5a-7+15

-3a+8

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Please If you plan to help me with any of these and respond to I would be grateful please show that this application is for good

valentina_108 [34]

Answer:

Step-by-step explanation:

Whether you’re job searching, working on your professional development, or building your career, you’ve probably been in a situation that warranted showing appreciation and gratitude. Perhaps you received a job lead and a pep talk from a former colleague. Maybe you had an informational interview with someone who has now taken you under their wing and is serving as a mentor. It might even be a family member who’s your greatest fan. Whatever the situation, one way to show gratitude is to write a thank-you note that expresses your appreciation.

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3 years ago

)) What is the area of the shaded region?<br>

ahrayia [7]

The area of a triangle can be found by using the formula A = bh/2

To find the area of the shaded region (the green section), we can find the area of both triangles and subtract.

Large triangle:

A = 28*36/2

A = 1008/2

A = 504km²

Small triangle:

A = 15*19/2

A = 285/2

A = 142.5km²

Subtract both triangles:

504 - 142.5 = 361.5km²

Therefore, the area of the shaded region is <u>361.5</u>km²

Best of Luck!

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4 years ago

A local middle school received a donation of 100 new computers from a nearby business. The principal decided to take the 100 new

Mekhanik [1.2K]

Answer: c over 100

Step-by-step explanation:

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3 years ago

What is the value of 2x+1 is 20 greater than 8x+5?

Yuliya22 [10]

Answer:

x = -4

I hope this helps!

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3 years ago

Read 2 more answers

Determine if the following equations form a perpendicular line or not

GREYUIT [131]

Slope-Intercept Form: y = mx + b, with m = slope and b = y-intercept.

If two lines are perpendicular, then they will have slopes that are <u>negative reciprocals</u> to each other. An example of negative reciprocals are 2 and -1/2

Now with line 2, I have to convert it to slope intercept form. Firstly, subtract 2x on both sides of the equation: $-5y=-2x+8$

Next, divide both sides by -5 and your slope-intercept form is $y=\frac{2}{5}x+\frac{8}{5}$

Now since 2/5 is <em>not</em> the negative reciprocal of -2/5, <u>these lines are not perpendicular.</u>

It's pretty much the same process; convert to slope-intercept and determine if negative reciprocal. This time I'll brush through them:

$6x-3y=15 \\-3y=-6x+15\\y=2x-5\\\\2x+4y=-12\\4y=-2x-12\\y=-\frac{1}{2}x-3$

Now since 2 <em>is</em> the negative reciprocal of -1/2, <u>these lines are perpendicular.</u>

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3 years ago