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Sophie [7]
3 years ago
12

Write a scenario that could work for the following line of best fit: y = -0.8x + 5.6. Explain the slope and intercept in this co

ntext.
Mathematics
1 answer:
Tamiku [17]3 years ago
5 0
Slope:-0.8
y intercept is (0,5.6)
x intercept is (7,0)
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you have a 5-inch by 7-inch picture that you framed. When you hung the picture, you found that the entire area is 69.56 in. What
Montano1993 [528]

Answer:

d. 2.4 in

Step-by-step explanation:

So initially w/o frame the area was 5 x 7 = 35 sq in.

Now we have to add the width of the frame to both dimensions.

(5+w)(7+w) = 69.56 sq in

35 + 7w + 5w + w² = 69.56

w² + 12w + 35 = 69.56

w² + 12w - 34.56 = 0

I use the quadratic formula to solve this (x = -b±√b²-4ac / 2a). I cheat by using a quadratic program on the calculator :,)

w = 2.4

w = -14.4

Since we can't have a negative width, the answer must be <u>w = 2.4 inches.</u>

You can also just plug the answer choices one-by-one into the calculator with guess-and-check because this is multiple choice.

4 0
3 years ago
Read 2 more answers
80000 times 60 plus 89
snow_lady [41]

Answer:

4,800,089

Step-by-step explanation:

You must multiply 80000 by 60 first, which an easy way to solve is multiply 8 by 6 and then add the amount of zeroes in both of those numbers so 48, and then 5 zeroes. So 4,800,000. Then you want to add 89.

3 0
3 years ago
If the tree grows an additional 10 feet, what is the new angle of
avanturin [10]

Answer:

  B)  47.1°

Step-by-step explanation:

The tangent relation is useful here.

  Tan = Opposite/Adjacent

The original height of the tree is the side of the triangle that is opposite the angle of elevation:

  Opposite = Adjacent × Tan

  original height = (25 ft)×tan(34°) ≈ 16.863 ft

__

After growing an additional 10 ft, the tree has a height of ...

  16.863 ft + 10 ft = 26.863 ft

Then the angle of elevation is found from ...

  tan(angle) = (26.863 ft)/(25 ft) ≈ 1.07451

  angle of elevation = arctan(1.07451) ≈ 47.057°

The angle of elevation to the top of the tree is about 47.1°.

6 0
2 years ago
For the function f(x)=x2-4, fins the value of f(x) when x=6
Snowcat [4.5K]

Answer:

32

Step-by-step explanation:

Substitute x = 6 into f(x), that is

f(6) = 6² - 4 = 36 - 4 = 32

5 0
3 years ago
Can you give me a example on how to do this that would be really helpfull
Rom4ik [11]
We'll do the first one.  I can't read the variable, but it looks like a \theta so that's what I'll use, but it doesn't matter.

First, get the variable by itself:

\theta

You get that before you multiply each side by two.  

 Now, you color the line so that all values that are less than 6 are shaded, so you put an open circle at 6 since it's not included and then you shade everything to the left.
6 0
3 years ago
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