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8090 [49]
3 years ago
8

At noon on Friday, the temperature was 0°F. Six hours later the temperature was -18°F. On average, what was the temperature chan

ge per hour?
Mathematics
1 answer:
Rama09 [41]3 years ago
4 0
In 6 hours the temperature went down 18 degrees. 
Divide -18 degrees / 6 hours = -3.
-3 degrees per hour.
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Please help and explain step by step​
Mila [183]

Answer:

92 cm

Step by step explanation:

first: you divide the rectangle into two right angled triangles using the diagonal

secondly:

you use pythagoras theorem to find the width of the rectangle

110²= 60²+ w²

w²= 110²- 60²

w²= 12100- 3600

w²= 8500

w= 92.195

w= 92 cm

6 0
4 years ago
One way to recognize a line of symmetry is to look for a line that divides the original image into?
Hunter-Best [27]

Answer:

Half

Step-by-step explanation:

by dividing in half, it shows both sides are equal/symmetric

hope this helps:)

4 0
2 years ago
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Suppose a and b are the solutions to the quadratic equation 2x^2-3x-6=0. Find the value of (a+2)(b+2).
KonstantinChe [14]

Answer:

(a+2)(b+2) = 4

Step-by-step explanation:

We are given the following quadratic equation:

2x^2-3x-6=0

Let a a and b be the solution of the given quadratic equation.

Solving the equation:

2x^2-3x-6=0\\\text{Using the quadratic formula}\\\\x = \dfrac{-b \pm \sqrt{b^2-4ac}}{2a}\\\\\text{Comparing the equation to }ax^2 + bx + c = 0\\\text{We have}\\a = 2\\b = -3\\c = -6\\x = \dfrac{3\pm \sqrt{9-4(2)(-6)}}{4} = \dfrac{3\pm \sqrt{57}}{4}\\\\a = \dfrac{3+\sqrt{57}}{4}, b = \dfrac{3-\sqrt{57}}{4}

We have to find the value of (a+2)(b+2).

Putting the values:

(a+2)(b+2)\\\\=\bigg(\dfrac{3+\sqrt{57}}{4}+2\bigg)\bigg(\dfrac{3-\sqrt{57}}{4}+2\bigg)\\\\=\bigg(\dfrac{11+\sqrt{57}}{4}\bigg)\bigg(\dfrac{11-\sqrt{57}}{4}\bigg)\\\\=\dfrac{121-57}{156} = \dfrac{64}{16} = 4

3 0
3 years ago
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xxTIMURxx [149]

Answer:

a) negative

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Step-by-step explanation:

The x value increased, but the y value decreased so the line goes down and has a negative slope

(y₁-y₂)/(x₁-x₂) is the slope where (x₁,y₁) and (x₂,y₂) are points on the line

(4-(-3))/(-1-5)=7/-6

6 0
2 years ago
Can someone help? using soh cah toa find length of OP round to the nearest tenth of a foot?
Marina CMI [18]

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95.5

Step-by-step explanation:

you can using toa

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tan 37° = 72/x

x = 72/ tan 37°

x = 95.547 feet

x = 95.5

6 0
3 years ago
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