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Bogdan [553]
3 years ago
12

Rewrite the expression 7x+21=

Mathematics
2 answers:
Furkat [3]3 years ago
7 0
You must find the factors of 7 and 21. Which is 7.

7(x+3)

And that's one way to rewrite this expression :)
Dima020 [189]3 years ago
5 0
Minus the 21 from the other side of the equation making it 7x=-21 then u divide the 7 from the x to the -21 resulting in x=-3
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N(t) = 25t + 150 for 0<=t<6, (200 + 80t)/(2 + 0.05t) for t>=8
nadezda [96]

Answer:

1600. This is a maximum limit of fish the pond can host.

Step-by-step explanation:

For \lim_{t \to \infty} N(t), we must take the part of this function valid for high values, i.e., the second part, where t \geq 8\\.

\lim_{t \to \infty} N(t)=\lim_{t \to \infty} \frac{200+80t}{2+0.05t}

Since we have two polynoms both in numerator and denominator, and both of them are of degree 1 (both linear), for high values of t, the main part of each polynom shall be the linear part, neglecting lower degree parts (in this case, constant terms):

\lim_{t \to \infty} \frac{200+80t}{2+0.05t}=\lim_{t \to \infty} \frac{80t}{0.05t}=\frac{80}{0.05} = 1600

This means that the number of fish in a pond has an <em>horizontal asymthote</em>. In other words, there seems to be a natural limit for the number of fish that there will be in the pond as years pass. The maximum number of fish is actually 1600. With this function, no higher than this figure can be reached. This might imply <em>limits in productivity</em>.

4 0
3 years ago
X2 - 20x + 100
FinnZ [79.3K]

Answer: trinomial

Step-by-step explanation:

yes

5 0
3 years ago
A) 48 m<br> B) 36 m <br> C) 18 m<br> D) 7 m
liraira [26]
Marcia: 1.5 meters tall / 2 meters long shadow
Building: unknown height / 24 meters long shadow

So 1.5/2 = x/24

You can cross multiply: 2x = 36
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So your answer is C).
7 0
3 years ago
What’s the answer for this
stich3 [128]

Answer:

4) y + 3 = 6x

Step-by-step explanation:

The y-intercept of your graph is (0, -3)

Putting 4) in standard form:

y = 6x - 3 the y-intercept is also (0, -3)

7 0
3 years ago
Read 2 more answers
A circular blade on a saw rotates at 2400 revolutions per minute. Find the angular speed in radians per second.
Gekata [30.6K]

Answer:

It should be 7.5 i can't seem to find another answer that says: A circular blade on a saw rotates at 2400 revolutions per minute. Find the angular speed in radians per second.  without having 7.5 in it!

Step-by-step explanation:

I hope im right, i apoligize if im not!

7 0
3 years ago
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