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4 years ago

What is the value of x? please help!!

Mathematics

2 answers:

Lesechka [4]4 years ago

4 0

Answer:

28°

Step-by-step explanation:

soln

(x+3)°+(2x+3)°

x°+3°+2x°+3°=90°(beign complementary angles)

3x+6=90°

3x=90°_6

3x=84

x=84/3

x=28°

ycow [4]4 years ago

4 0

Answer:

Step-by-step explanation:

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2 years ago

Point A is on a number line halfway between -17 and 5. Point B is halfway between point A and 0. What integer does point B reprs

Andrei [34K]

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2 years ago

:) y = (3 - x)(x + 2)

valentina_108 [34]

Answer:

-x² + x + 6

Step-by-step explanation:

Hey there!

To solve this, you have to use foil...

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Hope this helps :)

8 0

3 years ago

Find the sum of the geometric. Remember to show work and explain.

Allushta [10]

Answer: 393.75

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

$\sum\limits^6_1 {400\bigg(\dfrac{1}{2}\bigg)^n}\\\\n=1:\ 400\bigg(\dfrac{1}{2}\bigg)^1\quad =200\\n=2:\ 400\bigg(\dfrac{1}{2}\bigg)^2\quad =100\\n=3:\ 400\bigg(\dfrac{1}{2}\bigg)^3\quad =50\\n=4:\ 400\bigg(\dfrac{1}{2}\bigg)^4\quad =25\\n=5:\ 400\bigg(\dfrac{1}{2}\bigg)^5\quad =12.5\\n=6:\ 400\bigg(\dfrac{1}{2}\bigg)^6\quad =6.25\\.\qquad \qquad \qquad \qquad \quad \_\_\_\_\_\_\_\_\_\_\\\\.\qquad \qquad \quad \quad \text{Sum}=\large\boxed{393.75}$

4 0

3 years ago

Read 2 more answers