Answer:
x = - 7, x = - 1
Step-by-step explanation:
Given
x² + 8x + 7 = 0
Consider the factors of the constant term (+ 7) which sum to give the coefficient of the x- term (+ 8)
The factors are + 7 and + 1 , since
7 × 1 = 7 and 7 + 1 = 8 , then
(x + 7)(x + 1) = 0 ← in factored form
Equate each factor to zero and solve for x
x + 7 = 0 ⇒ x = - 7
x + 1 = 0 ⇒ x = - 1
Answer:
Step-by-step explanation:
where a 0 so a = 1 b = 8 c = 7
Quadratic Formula:
Evaluate the exponent and multiply 4ac
Subtract b^2 - 4ac and multiply 2a
Solve for the sqrt root of 35
x = - 8 ± 6/2 =
x = - 8 + 6/2 = -1
x = - 8 - 6/2 = -7
Brand B: 20 ounces for $63.80
a.
Both brands cost the same per ounce.
b.
Brand A is the better buy.
c.
Brand B is the better buy.
d.
There is not enough information provided to determine the better buy.
Determine how much cost one ounce in both cases:
1. Brand A: 14 ounces for $44.66, then 1 ounce costs
2. Brand B: 20 ounces for $63.80, then 1 ounce costs
As you can see both brands cost the same per ounce.
Answer: correct choice is A.
Both brands have the same cost which is 3.19 dollars/ounce. The correct answer is option A.
In mathematics, divides left-hand operands into right-hand operands in the division operation.
To determine which brand is the better buy, we need to compare the cost per ounce of each brand.
For brand A:
Cost per ounce = 44.66/14
Apply the division operation,
Cost per ounce = 3.19 dollars/ounce
For brand B:
Cost per ounce = 63.80/20
Cost per ounce = 3.19 dollars/ounce
Therefore, both brands have the same cost per ounce.
Hence, the correct answer is option A.
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pls pls answer asapppp
(15-12.5)*4=10
x=12.5
y= 10x - 32
y-intercept:
x-intercept:
Answer:
see below
Step-by-step explanation:
To find the x intercept set y =0 and solve for x
0= 10x - 32
32 = 10x
Divide by 10
3.2 = x
The x intercept
( 3.2,0)
To find the y intercept set x =0 and solve for y
y= 0 - 32
y = -32
( 0, -32)
Answer:
(0, -32)
(3.2, 0)
Step-by-step explanation:
The line is in slope intercept form. It is easy to identify the y-intercept.
The y-intercept is (0,-32). '-32' replaces the 'b' in the equation.
To find the x-intercept, set the value of 'y' to zero and solve for 'x'.
The x intercept is (16/5, 0).
This can also be expressed as (3.2, 0).
Hope this helps.
The equation to show the sum of two number is 160: x + y = 160.
An equation is a mathematical statement that shows that two expressions are equal.
To find two numbers that add up to 160, we can Set up an equation with two unknowns, x and y, representing the two numbers:
x + y = 160
Since there are infinitely many possible combinations of two numbers that add up to 160.
Some combinations are:
1. x = 80, y = 80
80 + 80 = 160
2. x = 50, y = 110
50 + 110 = 160
3. x = 30, y = 130
30 + 130 = 160
4. x = -20, y = 180
-20 + 180 = 160
5. x = 0, y = 160
0 + 160 = 160
These are just a few examples, and there are many other combinations of numbers that satisfy the equation x + y = 160.
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