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amid [387]
3 years ago
6

Solve r + (-8) = 10 ———————-

Mathematics
1 answer:
Yuliya22 [10]3 years ago
4 0

Answer:

r = 18

Step-by-step explanation:

r -8 = 10

r -8 + 8 = 10 + 8

r = 18

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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
Three ways to estimate 3/5 × 9 1/2
Blababa [14]
The first way is distributive property of multiplication. 3/5*9=3/9÷5/1=27/5. 3/5*1/2=3*1/5*2=3/10. Then you add the products and you would get 57/10. Simplify 57/10 to 5 7/10. Second way, converting the mixed fraction to a improper fraction and then multiply. 9 1/2=9*2+1÷2=19/2. 3/5*19/2=3*19/5*2=57/10. Like I said before, 57/10 simplified is 5 7/10. The last way is use rounding of fractions to estimate the products, 3/5*9 1/2. Round 9 1/2 to 10. 3/5*10=3*10/5. 30/5=6, which means that 6 is the estimated product of rounding. Hoped I helped. :)
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3 years ago
When you subtract two positive integers is the result always a positive integer
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Sai vì số Nguyên dương nhỏ trừ số nguyên dương lớn bằng số nguyên âm

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3 years ago
The length of each side of a square is increased by 2 inches. If the perimeter is 20 inches, write an equation to show the origi
Archy [21]
The new length side of the perimeter, we'll call p. The original length, we'll call o. P's equation looks like this:
p = 20 \times  \frac{1}{4}
Since 5 is the length of one side, subtract 2 from 5 to get 3. The equation looks like this:
o =  \frac{20}{4}  - 2
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o = 5 - 2


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Can someone please help me asap , I’ll mark brainlist !!!! Please
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Answer:

I think 72 feet because it is bigger in a shadow and that's the only bigger length

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