Vina has $4.70 in quarters, dimes and nickels in her purse. She has eight more dimes than quarters and six more nickels than qua
1 answer:
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Answer:
Part A: Number of cups of blue paint are 3 that are mixed with each cup of red paint.
Part B:
Part C:<em> $8</em>
Step-by-step explanation:
Given that:
The ratio of the number of cups of blue paint to the number of cups of red paint that Lara mixed to make a shade of purple paint is 3:1.
Part A:
The number of cups of blue paint = 3
The number of cups of red paint = 1
In sentence form, it can be written that:
Number of cups of blue paint are 3 that are mixed with each cup of red paint.
Part B:
3 cups of blue paint requires 1 cup of red paint.
cup of blue paint requires
cup of red paint.
Here, unitary method is used.
So, cup of red paint should be added to each cup of blue paint to make shade of purple.
Part C:
6 cups of blue paint are purchased for $48.
1 cup of blue paint is purchased for
Answer:
x = 1 ±
Step-by-step explanation:
Given
2x² - 4x = 10 ( divide through by 2 )
x² - 2x = 5
Using the method of completing the square
add ( half the coefficient of the x- term )² to both sides
x² + 2(- 1)x + 1 = 5 + 1
(x - 1)² = 6 ( take the square root of both sides )
x - 1 = ± ( add 1 to both sides )
x = 1 ± ← exact solutions
Answer:
Top right.
Step-by-step explanation:
So we want a line with a slope of 3 and passes through (2,5).
To do so, we can use the point-slope form.
The point-slope form is:
m is the slope and x₁ and y₁ is an ordered pair.
Thus, let m be 3, y₁ be 5, and x₁ be 2. Thus:
Our answer is the top right :)