Angle A is 2x + 3
Angle B is 4x + 2
Angle C is 2x - 1

The three angles add up to 180
So:
2x + 3 + 4x + 2 + 2x - 1 = 180
Combine terms
8x + 4 = 180
Subtract 4
8x = 176
x = 22

Now we solve for the angles:
Angle A is 2(22) + 3 = 44 + 3 = 47
Angle B is 4(22) + 2 = 88 + 2 = 90
Angle C is 2(22) - 1 = 44 - 1 = 43

Quick check: 47 + 90 + 43 = 180

8 0

3 years ago

Is the percent increase from 50 to 70 equal to thhe percent decease from 70 to 50

irinina [24]

Answer:

Step-by-step explanation:

The amounts of change are the same, but the original amounts are different. The ratio for the percent increase from 50 to 70 is 20/50, or 40%. The ratio for the percent decrease from 70 to 50 is 20/70, or about 29%.

6 0

3 years ago

Read 2 more answers

The table shows the total number y (in billions) of U.S. movie admissions each year for x years. Use a graphing calculator to fi

wariber [46]

Answer:

By rounding up of the constant and coefficient terms, we have;

The line of best, fit is y = 1.23 + 3.46 × 10⁻²·x

Step-by-step explanation:

The table for the data on the number of movie admissions each year is presented as follows;

Year, x ${}$ Admission, y

0 ${}$ 1.24

2 ${}$ 1.26

4 ${}$ 1.39

6 ${}$ 1.47

8 ${}$ 1.49

10 ${}$ 1.57

Using a graphing calculator, we have that the line of best fit is given by the following equation;

y = 1.23047619048 + 3.45714285714 × 10⁻²·x

Which is approximately, y = 1.23 + 3.46 × 10⁻²·x

3 0

3 years ago

If LM = 5 and MN = 5 what is LN

Romashka [77]

Answer:

LN=10

Step-by-step explanation:

if LM = 5 and MN = 5 then LN=10

4 0

2 years ago