Answer:
54
Step-by-step explanation:
90+36= 126
180-126= 54
Answer:
A'(-9, -3)
Step-by-step explanation:
The coordinates of A are (-3, -1).
The dilation factor is 3.
Multiply the coordinates of A by 3.
A'(-9, -3)
Answer:
51 and -27
Step-by-step explanation:
The sum of two numbers is 24 and their difference is 78. What are the two numbers? Let's start by calling the two numbers we are looking for x and y.
The sum of x and y is 24. In other words, x plus y equals 24 and can be written as equation A:
x + y = 24
The difference between x and y is 78. In other words, x minus y equals 78 and can be written as equation B:
x - y = 78
Now solve equation B for x to get the revised equation B:
x - y = 78
x = 78 + y
Then substitute x in equation A from the revised equation B and then solve for y:
x + y = 24
78 + y + y = 24
78 + 2y = 24
2y = -54
y = -27
Now we know y is -27. Which means that we can substitute y for -27 in equation A and solve for x:
x + y = 24
x + -27 = 24
X = 51
Summary: The sum of two numbers is 24 and their difference is 78. What are the two numbers? Answer: 51 and -27 as proven here:
Sum: 51 + -27 = 24
Difference: 51 - -27 = 78
Answer:
$1260
Step-by-step explanation:
Given data
You make $2,800 per month
Rent= 30% of monthly earning
=30/100*2800
= 0.3*2800
=$840
Transportation and foodt= 15% of monthly earning
=15/100*2800
= 0.15*2800
=$420
Hence the total expenses = 840+420
= $1260
Part A. Lest fin the zeros of our function first:
Step 1. Set the right side of the function equal to 0:
Step 2. Multiply both sides of the equation by -1
Step 3. Factor the left side:
Step 4. Set each factor equal to 0 and solve for
:
and
and
Since distances can't be negative, the zero of our function is
.
<span>We can conclude that the zero </span>
represents that when the horizontal distance of the diver is 3 ft, he is is in the surface of the pool. In other words, his vertical distance is zero.
Part B. To factor our quadratic equation
, we are going to use the method for simple cases because
:
Step 1. Find tow numbers whose product is
and its sum is
:
We know form our quadratic that
,
, and
, so
.
We want tow numbers that multiply together to make -18, and add up to 3.
Those number are 6 and -3.
and
Step 2. Rewrite the middle term
using those numbers:
Step 3. Factor the expression: