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Vinil7 [7]
3 years ago
13

Simplify the expression 5 + (15 + x). A. 5x + 20 B. x + 20 C. x + 5 D. x+ 15

Mathematics
2 answers:
sergij07 [2.7K]3 years ago
4 0

Answer:

B

Step-by-step explanation:

You can't do anything in the parentheses because you can't add x to 15 yet since x is unknown. Thus, you add 5 to 15 and get 20 + x or B, x + 20

allochka39001 [22]3 years ago
3 0

Answer:

the answer is B

I hope you a good day!

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Write an equation that could be used to find the value of x using the interior angles of ∆BDC, then solve it.
Alecsey [184]

9514 1404 393

Answer:

  x = 16

Step-by-step explanation:

Either or both of the right triangles can be used to find x. Or, triangle ABC could be used. All numbers are assumed to be degrees.

<u>Using ∆ABD</u>

  55 +90 +2x+3 = 180

  2x = 32 . . . . . . subtract 148

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<u>Using ∆BCD</u>

  50 +90 +2x+8 = 180

  2x = 32 . . . . . . subtract 148

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<u>Using ∆ABC</u>

  55 +(2x +3) +50 +(2x +8) = 180

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6 0
3 years ago
Need help on this asap
Ganezh [65]
(-5)(10)= 50 degrees

Brainliest?
5 0
3 years ago
Which is a factor of 144 - 49x²?<br> O 12-7x²<br> O 72-7x²<br> O 12-7x<br> O 72 + 7x
lisabon 2012 [21]

Answer: C: 12-7x

Step-by-step explanation:

This expression is a good example of the difference of two squares, as 144 is the square of 12, while 49x² is the square of 7x.

Any difference of two squares a^2-b^2 can be factored into the sum of their square roots times the difference of their square roots (a+b)(a-b).

Let's factor our expression.

144-49x^2=(12+7x)(12-7x)

Out of all the options given, only 12-7x is a factor. Hence, option C is correct.

4 0
2 years ago
PLEASE HELP ASAP I WILL MARKS AS BRAINLIEST PLUS 15 POINTS PLEASE
valentinak56 [21]
I believe it’s the second option, f=14 g=14 with the square root of 3
6 0
3 years ago
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