Answer:
95 degrees
Step-by-step explanation:
since angles 1 and 4 are vertical angles, they are congruent
3x+10=4x-15
3x-4x=-15-10
-x=-25
x=25
x=25 degrees
angles 4 and 7 are supplementary due to them being alternate exterior angles
lets find the measure of angle 4:
4x-15
4*25-15
100-15
85 degrees
Now, lets find the angle measure of angle 7:
85+x=180
x=180-85
x=95
So, the angle measure of angle 7 is 95 degrees
Answer:
16,500,000 people
Step-by-step explanation:
If South Africa has a population of 55,000,000 people, and the current spread of the virus may lead to 30% of death, this means that 30% of 55,000,000 people will die. 30% is similar to 30 cents per 1 dollar/100 cents. So this can be represented as 30/100. 30/100 x 55,000,000 = 16,500,000 people.
Answer:
Y-5=-8/5 (x+3)
Step-by-step explanation:
The answer is 10 was added to each side.
x² + 8x + 60 = x² + 12x + 20
x² + 8x + 60 - x² = x² + 12x + 20 - x²
8x + 60 = 12x + 20
60 - 20 = 12x - 8x
40 = 4x
x = 40/4
x = 10
So, 10 was added to each side.
Answer:
Step-by-step explanation:
k = (4ac – b2) / 4a. Find the vertex of y = 3x2 + x – 2 and graph the parabola.