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Grace [21]
3 years ago
13

Find the center!! PLEASE HELP

Mathematics
1 answer:
BartSMP [9]3 years ago
7 0
D i think it’s right
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Solve the equation by completing the sqaure. if necessary round to the nearest hundreth x^2+4x=1
viktelen [127]

Answer:

x = ± √ 5 − 2

Step-by-step explanation:

5 0
3 years ago
Select the expression that has a sum of seventy-four hundredths.
Alex_Xolod [135]
It should be D

Explanation:
“Four-tenths (0.4) plus thirty-four hundredths (0.34).”

0.4
0.34
——-
0.74

Hope this helps! :D
4 0
2 years ago
Help me pleaseee asap !!!
frosja888 [35]

Step-by-step explanation:

5x+3x-14=180

8x-14=180

8x=180+14

8x=174

x=174/8

x= 21.75°

if x is 21.75°, then 5x is 108.75°

which means 3x-14 is 51.25°

therefore, f +108.75+51.25=180

f = 180-160

f=20°

4 0
3 years ago
Humans can hear sounds with frequencies up to 20,000 Hz, while dolphins can hear sounds as high as 150,000 Hz. Write these numbe
Goshia [24]
20,000 Hz = 2 × 10^4 Hz

150,000 Hz = 1.5 × 10^5 Hz
4 0
3 years ago
Try to prove the hypothesis from part B that the sum of a rational and an irrational number is an irrational number.
Maurinko [17]

The next step of your proof is to subtract (a/b) from both sides.

Then you get, x = (m/n) - (a/b)

Since rationals are closed over addition, (m/n) + (-a/b) is a rational number.

Therefore, x (an irrational number) = a rational number                            <em>This is a false statement which is a contradiction. So, the assumption was incorrect.</em>

Thus, the sum of a rational and irrational number is an irrational number. QED

8 0
3 years ago
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