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OleMash [197]
3 years ago
8

Hellppp pleaseee Please be quick lol

Mathematics
1 answer:
Elza [17]3 years ago
7 0

Answer:

20(pi)

Step-by-step explanation:

• equation for the circumference of a circle= 2(pi)r

• You are given the diameter ( 20ft) but you need the radius (r) for the equation.

• divide 20 by 2 to get the radius since it is half of the diameter.

• 20/2=10 so c= 2(pi)(10)

• 2(10)=20

• plug in pi and your final answer is 20(pi)

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-q-7q=8 whats q equal?
Luba_88 [7]
-q-7q=8
First you need to know that there is an invisible 1 in front of -q. Change it to -q if you need to. You get:
-1q-7q=8
add like terms: -1-7 gives you -8.
-8q=8. Divide by -8 on both sides to find q.
-8/8=-1
8/8=1
Therefore, q=1.
7 0
3 years ago
A student sets up two reactions. Reaction 1 uses 0.180 mol/L of reactant, and Reaction 2 uses 0.510 mol/L of reactant. How many
il63 [147K]

Given the data from the question, reaction 2 is 2.83 times faster compared to reaction 1

<h3>Data obtained from the question</h3>
  • Molarity of reaction 1 (R₁) = 0.180 mol/L
  • Molarity of reaction 2 (R₂) = 0.510 mol/L
  • Comparison =?

<h3>How to determine the comparison of reaction 2 to reaction 1</h3>

We can determine how many times faster is reaction 2 to reaction by doing the following:

R₂ / R₁ = 0.510 / 0.180

R₂ / R₁ = 2.83

Cross multiply

R₂ = 2.83 × R₁

From the above illustration, we can see that reaction 2 is 2.83 times faster than reaction 1

Learn more about Graham's law of diffusion:

brainly.com/question/14004529

#SPJ1

4 0
2 years ago
I need help answering this question
Advocard [28]

Answer:

x = 17

Step-by-step explanation:

Since line m is parallel to line n, therefore:

(6x + 5) + (5x - 12) = 180 (consecutive interior angles are supplementary)

Solve for x

6x + 5 + 5x - 12 = 180

Add like terms

11x - 7 = 180

Add 7 to both sides

11x - 7 + 7 = 180 + 7

11x = 187

Divide both sides by 11

\frac{11x}{11} = \frac{187}{11}

x = 17

8 0
2 years ago
15. USE EFFICIENT METHODS Without
-Dominant- [34]

Answer:

5^-7, 5^0, 5^4

Step-by-step explanation:

Any time a number has a negative exponent that means that the resulting number will be a fraction (ex. 2^-2=\frac{1}{4}). Therefore this number is the smallest number.

Anytime a number has an exponent of 0, it will always equal 1

8 0
2 years ago
There are 86 people coming to my party and each person will need a cup how many packages of cups will i buy if one package of cu
marusya05 [52]

Answer:

i think its 4 packages

Step-by-step explanation:each package is 25 so if you get 2 its 50 + another package would be 75  so you need one more.

hope this helps

5 0
3 years ago
Read 2 more answers
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