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DedPeter [7]
3 years ago
15

Q=(r-m)/2 if r=21 and m=15​

Mathematics
2 answers:
LuckyWell [14K]3 years ago
7 0

Answer: q = 3

Step-by-step explanation:

Q = (21 - 15)/2 = 6/2 = 3

eduard3 years ago
5 0

Answer:

q=3

Step-by-step explanation:

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.can you help please ​
sweet [91]

Answer:

38.81cm³

Step-by-step explanation:

Volume of a sphere = 4/3πr³

Diameter is 4.2

radius= 4.2/2 = 2.1 or 21/10

4/3 × 22/7 × 21/10 × 21/10 × 21/10

= 4851/125

= 38.808

≈38.81cm³

3 0
3 years ago
The numbers of cars (c) in the parking lot increases when the parking fee (f) decrease. Write the correct equation for this scen
vodka [1.7K]
So when one goes up, the other goes down. This is an inverse equation.

An inverse equation looks like this: y = 1/x

In this case, when parking fee (f) decreases, cars (c) increase.
You know which side to put each variable on using the chart they gave you.
f         | c
20.00  15        (20.00 = x/15) x=300
30.00  10        (30.00 = x/10) x=300

So your equation in this case is f = 300/c
Knowing that, plug in the fee of 6.00

6 = 300/c   Multiply both sides by c.
6c = 300    Divide both sides by 6.
c = 50 cars

5 0
3 years ago
A carpenter makes legs for 3-legged stools and 4-legged tables. He makes a total of 46 legs. He could have made legs for how man
Tasya [4]
46 divided by 3 would be the equation which you can round to 16
6 0
3 years ago
Read 2 more answers
When constructing parallel lines , how can you verify the lines constructed are parallel
tamaranim1 [39]

Answer:

  compare the distance between the lines at one point to the distance between the lines at another point

Step-by-step explanation:

You can construct perpendiculars at different points and compare the distance between the lines at those perpendiculars. The distance between parallel lines is the same everywhere.

8 0
3 years ago
Read 2 more answers
Arlene had 1/3 as many goldfish as Isabelle. Isabelle has 5 times as many goldfish as Bruce. If Bruce had 18 goldfish, how many
kvv77 [185]

Answer: 30 goldfish

Step-by-step explanation: Bruce has 18 goldfish. If Isabelle has 5 times as many goldfish as Bruce she will have 18*5=90 goldfish. If Arlene has 1/3 times as many goldfish as Isabelle she will have 90/3=30 goldfish.

7 0
3 years ago
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