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svetoff [14.1K]
3 years ago
5

Earl runs 30 meters in 20 seconds. How many meters does Earl run per second?

Mathematics
2 answers:
arlik [135]3 years ago
4 0
You would divide 30 meters by 20 seconds. If you want to know how many meters he can run per second, you divide the amount ran (30 meters) by the amount of seconds (20 seconds). This would tell you the amount per second.

The answer would be 1.5 meters/second.
Kipish [7]3 years ago
3 0
- - He runs 1.5 meters each second.

- Solve:
Divide 30/20
<span>=1.5 
</span>To answer this we will divide the amount of meters by the amount of seconds. Then your answer will be the amount of meters Earl runs per second. Then we will check our work. Lets do it:-

30 ÷ 20 = 1.5
1.5 meter per second.

CHECK OUR WOK:-

1.5 × 20 = 30
<span>We were </span><span>RIGHT!!

</span><span>So, </span><span>1.5 meters per sec.</span>
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Write the standard equation of a circle that passes through (-5 5) with center (-10 -5) brainly
timama [110]

Answer:

The equation of the circle is (x + 10)² + (y + 5)² = 125 in standard form

Step-by-step explanation:

* lets study the standard form of the equation of a circle

- If the coordinates of the center of the circle are(h , k) and its radius

 is r, then the standard equation of the circle is:

 (x - h)² + (y - k)² = r²

* Now lets solve the problem

∵ The coordinates of the center of the circle are (-10 , -5)

∵ The standard form of the equation is (x - h)² + (y - k)² = r²

∵ h , k are the coordinates of the center

∴ h = -10 , k = -5

∴ The equation of the circle = (x - -10)² + (y - -5)² = r²

∴ The equation of the circle = (x + 10)² + (y + 5)² = r²

- To find the value of the radius lets use the point (-5 , 5) to

  substitute their coordinate instead of x and y in the equation

∵ The circle passes through point (-5 , 5)

∵ (x + 10)² + (y + 5)² = r²

- Use x = -5 and y = 5

∴ (-5 + 10)² + (5 + 5)² = r² ⇒ simplify

∴ (5)² + (10)² = r²

∴ 25 + 100 = r²

∴ r² = 125

* Now lets write the equation in standard form

∴ (x + 10)² + (y + 5)² = 125

* The equation of the circle is (x + 10)² + (y + 5)² = 125 in standard form

8 0
3 years ago
How do I find the restrictions on x if there are any? <img src="https://tex.z-dn.net/?f=%20%5Cfrac%7B1%7D%7Bx%20-%201%7D%20%20%3
Natali5045456 [20]

We have the expression:

\frac{1}{x - 1}=\frac{5}{x - 10}

When we have rational functions, where the denominator is a function of x, we have a restriction for the domain for any value of x that makes the denominator equal to 0.

That is because if the denominator is 0, then we have a function f(x) that is a division by zero and is undefined.

If we have a value that makes f(x) to be undefined, then this value of x does not belong to the domain of f(x).

Expression:

\begin{gathered} \frac{1}{x-1}=\frac{5}{x-10} \\ \frac{x-1}{1}=\frac{x-10}{5} \\ x-1=\frac{x}{5}-\frac{10}{5} \\ x-1=\frac{1}{5}x-2 \\ x-\frac{1}{5}x=-2+1 \\ \frac{4}{5}x=-1 \\ x=-1\cdot\frac{5}{4} \\ x=-\frac{5}{4} \end{gathered}

Answer: There is no restriction for x in the expression.

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1 year ago
J(2x+9) m(6x-1)<br> i don’t get this at all
kherson [118]

Answer:

omg that one is hard but it is 18j-6m

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Ideas for a 12 year old b-day party?
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A trampoline park or an arcade
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What would be the answer ?
Blizzard [7]

Answer: $13

Step-by-step explanation:

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