Answer:
hi, what number are u asking us to solve?
Answer:
(-4, -7)
Step-by-step explanation:
21y=-147
y=-7
2x-5x(-7)=27
x=-4
Answer:
d) 54
Step-by-step explanation:
Let's name x the age of Kylie.
Then we have:
K = x
Joan is 2 years younger than Kylie ⇒ J = x - 2
Kylie is 3 years older than Lilian ⇒ L = x - 3
Miriam is one year older than Joan ⇒M = (x - 2) + 1 = x - 1
If we sum up all ages we get: x + x -2 + x - 3 + x - 1 = 4x - 6
<u>Therefore, the sum of all ages is 4x - 6. </u>
Let's make x = 14 ⇒ 4x - 6 = 4(14) - 6 = 50
Let's make x = 15 ⇒4x - 6 = 4(15) - 6 = 54
Let's make x = 16 ⇒4x - 6 = 4(16) - 6 = 58
If we substitute for smaller x, we'll get values smaller than 50 and if we substitute for x >16 we'll get values greater than 58.
Looking at the options given by the problem, we can see that the only one that fits into the equation is d) 54.
The perimeter of △CDE is 9.66 units
<h3>Perimeter of a triangle</h3>
The perimeter of a triangle is the sum of the sides of the triangle.
Given the coordinate points C(4, -1), D(4, −5), and E(2, −3)
Determine the distance CD, CE and DE using the distance formula
CD = √(-5+1)²+(4-4)²
CD = √16+0
CD = √16
CD = 4units
CE = √(-3+1)²+(2-4)²
CE = √4+4
CE = 2.83 units
DE= √(-3+5)²+(2-4)²
DE = √8
DE = 2.83 units
Take the sum
Perimeter of triangle CDE = 4 + 2.83 + 2.83
Perimeter of triangle CDE = 9.66 units
Hence the perimeter of △CDE is 9.66 units
Learn more on perimeter of triangle here: brainly.com/question/24382052
#SPJ1
Answer:
f(x) = (x + 6)² - 29
Step-by-step explanation:
Given
f(x) = x² + 12x + 7
To complete the square
add/subtract ( half the coefficient of the x- term )² to x² + 12x
x² + 2(6)x + 36 - 36 + 7
= (x + 6)² - 29, thus
f(x) = (x + 6)² - 29