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klemol [59]
3 years ago
8

Find the value of x.• 5• 20• 40• 45​

Mathematics
1 answer:
insens350 [35]3 years ago
7 0

Answer:

3rd option: x= 40

Step-by-step explanation:

4x° +20°= 180° (adj. ∠s on a str. line)

<em>Bringing</em><em> </em><em>constants</em><em> </em><em>to</em><em> </em><em>1</em><em> </em><em>side</em><em>:</em>

4x°= 180° -20°

<em>Simplify</em><em>:</em>

4x°= 160°

<em>Divide</em><em> </em><em>by</em><em> </em><em>4</em><em> </em><em>on</em><em> </em><em>both</em><em> </em><em>sides</em><em>:</em>

x°= 40°

Thus, x=40.

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Step-by-step explanation:

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3 years ago
I will mark Brainliest!!
EastWind [94]

Answer:

C.) -5 and 5

Step-by-step explanation:

Plug in -5 & 5 separately for x.

Plug in -5 for in the equation. Remember to follow PEMDAS. First solve for power, then multiplication.

2(-5)² = 50

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Plug in 5 into the equation for x. Remember to follow PEMDAS. First solve for power, then multiplication.

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50 = 50 (True).

~

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3 years ago
Time intervals measured with a stopwatch typically have an uncertainty of about 0.2 seconds, due to human reaction time at the s
Yakvenalex [24]

Answer:

a) 2,650%

b) 27,400%

c) 164,900%

Step-by-step explanation:

We want to measure the percentage we would have to increase the typical value to obtain the values given in a), b) and c).  

But 0.2 increased in x% equals  

0.2 + 0.2(x/100) =0.2(1+x/100)

So, if we want to increase 0.2 in x%, we must multiply it by (1+x/100)

a)

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⇒  x/100=26.5 ⇒ x=2,650%

b)

0.2(1+x/100) = 55 ⇒ (1+x/100)=55/0.2 ⇒  1+x/100=275

⇒  x/100=274 ⇒ x=27,400%

c)

5.5 min = 5.5*60 s = 330

0.2(1+x/100) = 330 ⇒ (1+x/100)=330/0.2 ⇒  1+x/100=1,650

⇒  x/100=1,649 ⇒ x=164,900%

4 0
3 years ago
PLEASE HELP GEOMETRY QUESTION: abcd and efgh are squares. if jh = 4 cm and jc = 9 cm, then what is the area of the shaded region
Nata [24]
Hello!

First you have to find the area of the bigger square

When it goes from the center to a corner you multiply the value by 2 to find one side

9 * 2 =18

Now you find the area

18 * 18 = 324

Now we find the area of the smaller region

4 * 2 = 8

Find the area

8 * 8 = 64

Now we subtract these

324 - 64 = 260

The answer is 260

Hope this helps!
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3 years ago
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