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3 years ago

Is this answer correct? (angel sums triangle)

Mathematics

1 answer:

Alik [6]3 years ago

4 0

Answer:

No, I got 18

Step-by-step explanation:

180-78=102

180-11-49=120

180-120=60

x=180-102-60=18

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What is b in the equation b-8+2b=20

svetlana [45]

Answer:

b = 28/3 or 9.3

Step-by-step explanation:

b-8+2b=20

3b-8=20

3b=20+8

3b=28

4 0

4 years ago

Evaluate each using the values given please help me

yaroslaw [1]

Answer:

the first one should be -548

Step-by-step explanation:

plug in the values and you should get -30+7(-72-2).

4 0

3 years ago

Vlad spent 20 minutes on his history homework and then completely solved x math problems that each took 2 minutes to complete. W

MAXImum [283]

I believe #2 would be the best answer. Either that or #1.

5 0

4 years ago

Read 2 more answers

Please help me solve this question

const2013 [10]

angle D = 92°

Step-by-step explanation:

Since the two figures are congruent.

angle D = angle K

20x + 12 = 25x - 8

5x = 20

x = 4

Substituting this value into angle D, we see that

angle D = 20x + 12

= 20(4) + 12

= 92°

4 0

3 years ago

the numerator of a fraction x/y is 2 less than the denominator. If 3 is added to both the numerator and denominator, then the su

Mashutka [201]

Answer:

Step-by-step explanation:

Fraction :x/y

numerator x = y - 2

Now the fraction can be written as: (y-2)/y

3 is added to both denominator and numerator.

After adding 3, the new fraction = $\frac{y-2 +3 }{y + 3 } = \frac{y+ 1 }{y +3}$

The sum of the new fraction and the original fraction is 53/35

$\frac{y+1}{y+3} + \frac{y-2}{y} = \frac{53}{35}\\\\\frac{(y+1)*y}{(y+3)*y}+\frac{(y-2)*(y+3)}{y(y+3)}=\frac{53}{35}\\\\\frac{y^{2}+y}{y^{2}+3y}+\frac{y^{2}+y-6}{y^{2}+3y}=\frac{53}{35}\\\\\frac{y^{2}+y+y^{2}+y-6}{y^{2}+3y}=\frac{53}{35}\\\\\frac{2y^{2} + 2y - 6}{y^{2}+3y}=\frac{53}{35}\\\\$

35*(2y² + 2y - 6) = 53 *(y² + 3y)

35*2y² + 2y * 35 - 6*35 = 53 *y² + 53*3y

70y² + 70y - 210 = 53y² + 159y

70y² + 70y - 210 - 53y² - 159y = 0

70y² - 53y² + 70y - 159y - 210 = 0

17y² - 89y - 210 = 0

6 0

3 years ago

Read 2 more answers