Answer:
x = -13, y = -3
Step-by-step explanation:
let a number = x; the other = y
x = 3y - 4
x + y = -16
Isolate the y in the second equation. Subtract x from both sides
x (-x) + y = -16 (-x)
y = -16 - x
Plug in -16 - x for y
x = 3(-16 - x) - 4
Simplify. Distribute 3 to all terms within the parenthesis
x = -3x - 48 - 4
x = -3x - 52
Isolate the x. Add 3x to both sides
x (+3x) = -3x (+3x) - 52
4x = -52
Divide 4 from both sides
(4x)/4 = (-52)/4
x = -52/4
x = -13
Plug in -13 for x in one of the equations:
x + y = -16
(-13) + y = -16
Isolate the x. Add 13 to both sides
y - 13 (+13) = -16 (+13)
y = -16 + 13
y = -3
Answers: x = -13, y = -3
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Answer:
b-80 d-6
Step-by-step explanation:
100% correct
Answer:
Option B. 
Step-by-step explanation:
step 1
Find the area of a circle with radius 8.5 inches
The area of a circle is equal to
substitute
step 2
Find put the approximate area of the fan
we know that
The area of complete circle subtends a central angle of 360 degrees
so
using proportion
Find the area that correspond a central angle of 125 degrees
assume
Answer:
I guess the question is when her hair will be almost 16cm long.
So she needs to grow hair almost 12 cm of hair. Because 16-4=12
To grow 12cm hair she needs 8 months (12/1.5=8)
So Svetlana needs to cut her hair before 8th month.
Tenth is the first number after the decimal. In this equation, 5 is in tenth place but the number to the right is greater than 5, so the 5 rounds to 6. The answer is 12.6.
