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WARRIOR [948]
4 years ago
15

What is the value of 7 cubed? A. 14 B. 21 C. 49 D. 343

Mathematics
1 answer:
stiks02 [169]4 years ago
5 0

Answer:

D. 343

Step-by-step explanation:

For example=

7²=49

7=√49

(√49)²=49

Basically, you put a non negative number in ().

If you wanted to find the square of a number, just remember that square equals ² and so, all you do is times 7×7 twice.

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A school bus is moving 26.8 m/s on flat ground when it begins to accelerate at 4.73 m/s^2. How much time does it take to travel
leva [86]

The school bus will take 5.34 seconds to travel 95.1 m if the bus is moving 26.8 m/s on flat ground when it begins to accelerate at 4.73 m/s².

<h3>What is a quadratic equation?</h3>

Any equation of the form \rm ax^2+bx+c=0 where x is variable and a, b, and c are any real numbers where a ≠ 0 is called a quadratic equation.

As we know, the formula for the roots of the quadratic equation is given by:

\rm x = \dfrac{-b \pm\sqrt{b^2-4ac}}{2a}

We have:

A school bus is moving 26.8 m/s on flat ground when it begins to accelerate at 4.73 m/s².

From the second equation of motion:

\rm s = u + \dfrac{1}{2}at^2

We have given:

s = 95.1 m

u = 26.8 m/s

a = 4.73 m/s²

\rm 95.1 = 26.8 + \dfrac{1}{2}(4.73)t^2

The above equation is a quadratic equation:

After simplification:

\rm \dfrac{4.73}{2}t^2=68.3

\rm t^2=28.879

t = 5.373 seconds ≈ 5.34 seconds

Thus, the school bus will take 5.34 seconds to travel 95.1 m if the bus is moving 26.8 m/s on flat ground when it begins to accelerate at 4.73 m/s².

Learn more about quadratic equations here:

brainly.com/question/2263981

#SPJ1

4 0
2 years ago
Someone help me!!!
VLD [36.1K]

Answer:

4 pack priced at £2.04 is the better pack

Step-by-step explanation:

2.04/4=£0.51 per roll

4.68/9=£0.52 per roll

8 0
3 years ago
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What punctuation makes this sentence correct
Anastasy [175]
A comma after taco and burrito 
7 0
3 years ago
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Write the equation for the vertical line that contains point E(-7, 7)
DerKrebs [107]

Answer:

-7 = x

Step-by-step explanation:

Since you only have one point here, you take the x-coordinate set it equal to x.

I am joyous to assist you anytime.

5 0
4 years ago
Please help with question ​
laiz [17]
The answer is = -5
This gotta be 20 words long so I’m just making it 20 words anyways I did it on my book hope it helps

7 0
3 years ago
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