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MatroZZZ [7]
3 years ago
8

So i'm having a bit of trouble with the same thing again, sorry for asking this many questions for the same lesson but my moms b

f who passed and was top in his calculus classes didn't even understand it! Shocker huh? anyways here's the question;
y=9x
6x-y=-1
Mathematics
1 answer:
jonny [76]3 years ago
6 0
I'm not sure I understand the question. But if I do understand it, it should be x=1/3 
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The equation w(t)=100+40t models the weight (w(t) in grams) of a male white laboratory rat t weeks after its birth.
Gwar [14]

Answer:

Step-by-step explanation:

5 0
2 years ago
the radius of one circular field is 5m and that of other is 3m.find the radius of circular field whose area is the difference of
Alex777 [14]

Answer:

4m

Step-by-step explanation:

  1. Recall the formula for area of a circle for each calculation
  2. Calculate the area of the large field (r = 5m)
  3. Calculate the area of the small field (r = 3m)
  4. Find the difference in area
  5. Find the radius of the "difference" field using difference in area

The formula for area of a circle is A = πr².

"A" means area.

π is pi. <em>I will use the π button</em>, but some teachers ask to use 3.14.

"r" means radius.

Area of large field:

Substitute "r" for 5m in the formula.

A = πr²

A = π(5m)²

A = π25m²

A = 78.5398163397 m²

Area of small field:

Substitute "r" for 3m in the formula.

A = πr²

A = π(3m)²

A = π9m²

A = 28.2743338823  m²

Difference in areas:

Subtract the area of small field from the area of large field.

(78.5398163397 m²) - (28.2743338823  m²)

= 50.2654825 m²

Radius of "difference" field:

Since we are looking for radius, not area, rearrange the formula to isolate "r".

A = πr²

\frac{A}{\pi } = \frac{\pi r^{2}}{\pi}     Divide both sides by π

\frac{A}{\pi } = r²                π cancels out on the right side

\frac{A}{\pi } = √r²             Square root both sides

\sqrt{\frac{A}{\pi }} = r        ² and √ cancel out, leaving "r" isolated

r = \sqrt{\frac{A}{\pi }}       Variable on the left for standard formatting

Substitute "A" for the difference in area

r = \sqrt{\frac{A}{\pi }}

r = \sqrt{\frac{50.2654825m^{2}}{\pi }}     Divide by pi first

r = \sqrt{16.0000000135&#10;m^{2}}            Find the square root

r ≈ 4m

The radius of the field that has the area of the difference in the two fields is 4m.

3 0
3 years ago
DO NOT SKIP!! Let’s see who’s smart enough to work out the problem if u get it correct I’ll mark u as BRAINLIEST SHOW THE WORK P
ICE Princess25 [194]

In year 10, the table says the population is 25,000

But if we plugged x = 10 into the equation Lucy got, then,

y = 600x + 25000

y = 600(10) + 25000

y = 6000 + 25000

y = 31000

Lucy's equation says that the population in year x = 10 should be y = 31000 instead of 25000. So this is one way to show that there is an error. The output from the equation isn't matching what the table shows.

7 0
3 years ago
What is the greatest perfect square that is a factor of 396? Explain
DedPeter [7]
<span>To find the greatest perfect square  that is a factor of 396, first we check what are the factors of 396
Factors of 396 are: 1,2,3,4,6,9,11,12,18,22,33,36,44,66,99,132,198,396
Now we check which is the greatest perfect square in these. 
396, 198, 132, 99, 66,44 are not perfect square,
so 36 is the largest perfect square from the factors of 396, 6 x 6 = 6</span>² = 36
4 0
2 years ago
Is 25 pints less than or greater than 13 qt
Vikentia [17]
There are 2 pints in a quart. Convert them both to the same measurement. Let's say you convert them both to pints. Multiply. Do 13 times 2. This equals 26. Now it is even, they are both in pints. 25 pints to 26 pints (or 13 quarts). 25 pints is less than 13 quarts. (25 pints < 13 quarts)
5 0
3 years ago
Read 2 more answers
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