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3 years ago

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(AHHHHH HELP I NEED THIS RIGHT NOW) Dan is using tiles to add Negative 8 + 6. He begins with the tiles shown below. 8 negative t

iles. What is the sum of Negative 8 + 6? –14 –2 2 14

2 answers:

lukranit [14]3 years ago

7 0

The answer for the sum is negative 2

Anna35 [415]3 years ago

7 0

Answer:

It is -2 sorry not sorry I'm late

Step-by-step explanation:

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If y=3x - 5, find the value of y when x = -1yn

kupik [55]

Answer:

$y = 3x - 5 \\ x = - y \\ substitute \: - y \: in \: the \: place \: of \: x \\ y = - 3y - 5 \\ y + 3y = 5 \\ 4y = 5 \\ y = \frac{5}{4}$

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2 years ago

5/2.35 = 12/x<br><br> what does x =

Maksim231197 [3]

Step-by-step explanation:

5 = 12 Cross multiply

2.35 x

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x = 5.64

<h3><u><em>Hope this helps!!!</em></u></h3><h3><u><em>Please mark as brainliest!!!</em></u></h3>

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3 years ago

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Which of the following scatterplots would have a trend line with a positive slope?

IRINA_888 [86]

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2 years ago

Round to the nearest hundredth 0.207

Natasha_Volkova [10]

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3 years ago

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If you are 600 m from a batter when you see him hit a ball, how long will you wait to hear the sound of the bat hitting the ball

Molodets [167]

Answer:

<em>The speed of sound at 20°C is 343.42 m/s.</em>

<em>You have to wait 1.75 seconds to hear the sound of the bat hitting the ball</em>

Step-by-step explanation:

<u>Speed of Sound</u>

The speed of sound is not constant with temperature. Generally speaking, the greater the temperature, the greater the speed of sound.

The approximate speed of sound in dry air at temperatures T near 0°C is calculated from:

$\displaystyle v_{\mathrm {s} }=(331.3+0.606\cdot T )~~~\mathrm {m/s}$

The air is at T=20°C, thus the speed of sound is:

$\displaystyle v_{\mathrm {s} }=(331.3+0.606\cdot 20 )~~~\mathrm {m/s}$

$v_{\mathrm {s} }=343.42\ m/s$

The speed of sound at 20°C is 343.42 m/s.

To calculate the time to hear the sound after the batter hits the ball, we use the formula of constant speed motion:

$\displaystyle v=\frac{d}{t}$

Where d is the distance and t is the time. Solving for t:

$\displaystyle t=\frac{d}{v}$

Substituting the values v=343.42 m/s and d=600 m:

$\displaystyle t=\frac{600}{343.42}$

t = 1.75 s

You have to wait 1.75 seconds to hear the sound of the bat hitting the ball

6 0

3 years ago