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natima [27]
2 years ago
12

Brainliest + Points!

Mathematics
2 answers:
harina [27]2 years ago
5 0

Answer:

C


Step-by-step explanation:

<em>The target area is shown in the attached picture.</em>

We want to figure out probability of hitting red region.

The area of the figure is the area of the red square, which is 196.

Area of red region is area of whole square (196) minus area of blue square (64). So we have:

Area of red region =  196 - 64 = 132


Probability of hitting red region is 132 divided by total, which is 196.

\frac{132}{196}=0.67


Answer choice C is right.

sleet_krkn [62]2 years ago
3 0
0.33% because you just divide both of them together, I will show my work on paper, it will take a second

work:

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For 12 - 1,
82 - 78 = 4 degrees per hour

For 1 - 3:15,
(88 - 82) / 2.25 = 2.67 degrees per hour

For 3:15 - 4:30,
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For 4:30 to 6,
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The time intervals 12 to 1 and 3:15 to 4 had the fastest rate of change
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3 years ago
To what expression must 5a square-4a+3 be added to make the sum zero??​
pychu [463]

Answer:

Step-by-step explanation:

Additive inverse of (5a² - 4a + 3) should be added to make them zero

(5a² - 4a + 3) + (-5a² + 4a - 3)=   <u>5a² - 5a² </u>  <u>- 4a + 4a</u>    <u>+ 3  - 3</u>

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4 0
2 years ago
Given that <img src="https://tex.z-dn.net/?f=I_0%20%3D%2010%5E-12" id="TexFormula1" title="I_0 = 10^-12" alt="I_0 = 10^-12" alig
Alex Ar [27]

The intensity of sound which the decibel level of the sound measures 156 is 3.981 × 10³ W/m²

Decibel level, dB = 10log₁₀(I/I₀) where dB = decibel level = 156, I = intensity at 156 dB and I₀ = 10⁻¹² W/m².

Since we require I, making I subject of the formula, we have

dB/10 = log₁₀(I/I₀)

\frac{I}{I_{0} } = 10^{\frac{dB}{10} } \\I = I_{0} 10^{\frac{dB}{10} }

Substituting the values of the variables into the equation, we have

I = I_{0} 10^{\frac{dB}{10} }\\I = 10^{-12} 10^{\frac{156}{10} }\\I = 10^{-12} 10^{15.6}\\I = 10^{15.6-12} \\I = 10^{3.6} W/m^{2}

I = 3981.072W/m²

I = 3.981 × 10³ W/m²

So, the intensity of sound which the decibel level of the sound measures 156 is 3.981 × 10³ W/m²

Learn more about intensity of sound here:

brainly.com/question/4431819

3 0
3 years ago
Is y=4x+3 a one step or a two step problem
Hunter-Best [27]

Answer:

y=4x-3

then add 3 to each side to get: y+3=4x.

Next, just divide both sides by 4 to get x = (y+3)\div4.

3 0
2 years ago
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The slope of this line is: m = 3/4

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