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seropon [69]
3 years ago
13

Evaluate the expression for c = –0.3.

Mathematics
1 answer:
ycow [4]3 years ago
6 0

Answer:

2.16

Step-by-step explanation:

c = -0.3

24c² =

plug in c

24(-0.3)²

solve for the exponent

24(0.09)

multiply

2.16

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Factor completely 4x^2 − 32
Blababa [14]

Answer: 4(x+2\sqrt{2})(x-2\sqrt{2})

Step-by-step explanation:

We can first take out the common factor of 4, as both 4x² and -32 are divisible by 4.

4(x^2-8)

From here, we can assume that x²-8 is a difference of two squares even though 8 is not a perfect square.

<em>For review, a difference of two squares </em>a^2-b^2 can be factored into (a+b)(a-b).

4(x^2-8)\\4(x+\sqrt{8})(x-\sqrt{8})\\4(x+2\sqrt{2})(x-2\sqrt{2})

4 0
1 year ago
Find the slope of the line. pleaseee
Akimi4 [234]

Answer:

  0

Step-by-step explanation:

The slope is the change in y divided by the corresponding change in x:

  ∆y/∆x = (54.99 -54.99)/(7 -6) = 0/1 = 0

The slope of the line is zero.

7 0
3 years ago
Lelia has 5 1/4 hours of homework to do over the weekend. She does 2/3 of her homework on Saturday so sh can get it out of the w
dedylja [7]
Well 5 1/4 hours is 5 hours and 15 minutes and 2/3 of 5 hours and 15 minutes or 315(5*60+15) is 210
hope it helped
5 0
3 years ago
What's the slope of the line passing through the points -1, 8 - 7, 3​
tatuchka [14]

Answer:

slope = 5/6

Step-by-step explanation:

Since you were given two points, you can use the point-slope formula to find the slope. The general equation looks like this:

y₁ - y₂ = m(x₁ - x₂)

In this formula, "m" represents the slope. To find the slope, plug the values from the two points into the equation. Make sure to put the values from the same point in the variable with the same number.

Point 1: (-1, 8)

Point 2: (-7, 3)

y₁ - y₂ = m(x₁ - x₂)                          <----- Original formula

8 - y₂ = m(-1 - x₂)                           <----- Plug in "x" and "y" values from Point 1

8 - 3 = m(-1 - (-7))                           <----- Plug in "x" and "y" values from Point 2

5 = m(-1 - (-7))                                <----- Simplify left side

5 = m(6)                                        <----- Simplify inside parentheses

5/6 = m                                       <----- Divide both sides by 6

5 0
2 years ago
a collection of nickels and quarters are worth $8.80. if she has 68 total nickels and quarters, how many quarters does she have?
nikdorinn [45]

Answer:20

Step-by-step explanation:

3 0
3 years ago
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