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luda_lava [24]
3 years ago
7

Make m the subject of the formula r=5m²-n

Mathematics
1 answer:
KATRIN_1 [288]3 years ago
5 0

Answer:

√(r+n)/5=m

Step-by-step explanation:

r=5m²-n

adding n on both sides

r+n=5m²-n+n

r+n/5=m²

taking square root on both sides

√(r+n)/5=m

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What is the answer to 10 - 2r for r =5
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Jill was training for a triathlon, so she planned a day of exercising. She spent a total of 2 hours riding her bike and running.
Fiesta28 [93]

Answer:

Jill's rate of running = 4.667 miles/hr

Step-by-step explanation:

Let's say that rate of running = x miles/hr

so rate of biking = (x + 10) miles / hr

Time of running = rate of running / distance of running = x/6

Time of biking = rate of biking/distance of biking = (x+10)/12

Total time of cycling and biking = Time of running + Time of biking

Given that total time of cycling and biking = 2 hrs

⇒ 2 = (x/6) + ((x+10)/12)

⇒ 2 = (2x+x + 10)/12

⇒ 2 × 12 = 3x + 10

⇒24 - 10 = 3x

⇒x = 14/3 =4.667 miles/hr

Hence Jill's rate of running = 4.667 miles/hr



3 0
3 years ago
How do I find the answer to [2−∣∣−23−2(−15)∣∣]÷(−13)
gulaghasi [49]

The answer to the expression [2−||−23−2(−15)||]÷(−13) is 5/13.

In the question ,

the expression is given as

=[2−||−23−2(−15)||]÷(−13)

Solving the terms inside [ ] , we have

2*(-15) = -30

Substituting the value of 2*(-15) in the expression , we get

=[2-||-23-(-30)||]÷(−13)

=[2−||−23+30||]÷(−13)   ....as -(-30) = 30

Solving the terms inside the modulus ||  || , we get

=[2−||+7||]÷(−13)      ...as ||-23+30|| represents the modulus(norm) value ..

So ,Simplifying further , we get

=[2−7]÷(−13)                ....as 2-7 = -5

=[-5]÷(−13)       ...as a÷b can be written as a/b

= -5/-13

writing the answer in the simplified form .

= 5/13

Therefore , the answer to the expression [2−||−23−2(−15)||]÷(−13) is 5/13.

Learn more about Algebraic Expressions here

brainly.com/question/7463555

#SPJ1

8 0
1 year ago
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