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2 years ago

7

Dena uses 7.4 pints of white paint and blue paint to paint her bedroom walls. 2/5 of this amount is white paint, and the rest is

blue paint. How many pints of blue paint did she use yo paint her bedroom walls

1 answer:

katrin [286]2 years ago

7 0

Answer:

4.44 pints

Step-by-step explanation:

7.4 times 3/5

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Please can someone help me on these? solve this equation by factorising: 2x^2 + 5x + 2 = 0

slavikrds [6]

$2x^2 + 5x + 2 = 0\\
2x^2+4x+x+2=0\\
2x(x+2)+1(x+2)=0\\
(2x+1)(x+2)=0\\
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$x^2-4x+1=0\\
x^2-4x+4-3=0\\
(x-2)^2=3\\
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2 years ago

Multiply the expression 2(x+1)(2x-5)

Sedbober [7]

This gives you the answer, look at it tells you how to solve this and get your answer

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3 years ago

3a. Write an equation in slope-intercept form of a<br> line that passes through (2,1) and (6,-5).

eimsori [14]

Answer:

$y =- 3/2x + 4$

Step-by-step explanation:

$(2,1) and (6,-5).\\x_1 = 2\\x_2 = 6\\y_1 =1\\y_2 =-5\\\frac{y-y_1}{x-x_1} = \frac{y_2-y_1}{x_2-x_1}\\ \\\frac{y-1}{x-2} = \frac{-5-1}{6-2}\\\\\frac{y-1}{x-2} = \frac{-6}{4} \\Cross-Multiply\\4(y-1) = -6(x-2)\\4y-4=-6x+12\\4y =-6x+12+4\\4y = -6x+16\\Divide- through-by ; 4\\\frac{4y = -6x+16}{4} \\\\y = -\frac{3}{2} x +4$

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3 years ago

Matthew wants to estimate the mean height of students attending his college. He records the heights of 100 randomly selected stu

Mnenie [13.5K]

The correct option that shows the population of the research carried out by Matthew is;

<u><em>Option D; all the students attending the college</em></u>

<u><em></em></u>

We are told that Matthew wants to estimate the mean height of students attending his college.

Now, let us say the total number of students in his college is x. If he decides to select 100 students randomly to record their height, it means this 100 students is a sample out of the total number of students which is x that is the population.

In conclusion, we can say that the population of this research by Matthew is the total number of students that attend the college.

Read more at; brainly.com/question/6028584

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2 years ago

Evaluate 2 + 4/5 n for n = 1/4

Sophie [7]

Answer:

$2\frac{1}{5}$

Step-by-step explanation:

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2 years ago