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irina [24]
2 years ago
8

Easy points..........

Mathematics
1 answer:
IRINA_888 [86]2 years ago
5 0

Answer:

  • 38°; 142°; 308°

Step-by-step explanation:

The solution of each question is self-explanatory.

<u>Used properties</u>

  • Vertical angles are congruent
  • Angle sum property of circle
  • Central angle is same as intercepted arc measure
<h3>#8</h3>
  • mED = mAB = mAC - mBC = 90° - 52° = 38°
<h3>#9</h3>
  • mEA = mBCD = mBC + mCD = 52° + 90° = 142°
<h3>#10</h3>
  • mBDC = 360° - mBC = 360° - 52° = 308°
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Evaluate f(x) = x2 for f(-8).
Sophie [7]
The answer is 64. You don’t know x so you need to take the two and multiply 8. 8 times 8 equals 64
8 0
3 years ago
Y=x+1, xy+2x=0<br><br> Help please
Vsevolod [243]

Answer:

x = 0,-3

y = 1,-2

Step-by-step explanation:

We can substitute x+1 for x in the second equation

x(x+1) + 2x = 0

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7 0
3 years ago
16. A triangle has side lengths of 6, 8, and 10. Is it a right triangle? Explain.
yarga [219]

Answer

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Step-by-step explanation:

3 0
3 years ago
If 420 = 120%, what would 100% equal?
Ira Lisetskai [31]

Answer:

350

Step-by-step explanation:

Introduction. Percent, p%

'Percent (%)' means 'out of one hundred':

p% = p 'out of one hundred',

p% is read p 'percent',

p% = p/100 = p ÷ 100

120% = 120/100 = 120 ÷ 100 = 1.2

100% = 100/100 = 100 ÷ 100 = 1

Percentage of 120% of what number = 420?

120% × ? = 420

? =

420 ÷ 120% =

420 ÷ (120 ÷ 100) =

(100 × 420) ÷ 120 =

42,000 ÷ 120 =

350

<h2>Proof</h2><h3>How do we check the result?</h3>

If 120% × 350 = 420 =>

Divide 420 by 350...

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<h3>Note:</h3>

Multiply a number by the fraction 100/100,

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100/100 = 100 ÷ 100 = 1

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<h2>Hope it is helpful....</h2>
8 0
3 years ago
What is the fourth term of an arithmetic sequence whose first term is 23 and whose seventh term is 5?
mixas84 [53]

We have that  the fourth term of an arithmetic sequence is

a_4=14

Option C

From the question we are told

What is the fourth term of an arithmetic sequence whose first term is 23 and whose seventh term is 5?

A) 78

B) 32

C) 14

(Explain your work)

Generally the equation for the  arithmetic sequence  is mathematically given as

a_4=a_1+(n-1)d

Therefore

For seventh term

5=23+(6)d\\\\d=5-23/(6)\\\\d=-3

Therefore

For Fourth term

a_4=23+(3*(-3))

a_4=14

For more information on this visit

brainly.com/question/23366835

4 0
3 years ago
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