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ioda
4 years ago
7

WHAT IS THE LENGTH OF DT?

Mathematics
1 answer:
alexandr402 [8]4 years ago
4 0

There are two ways you can find out the length: Draw a right triangle with the two ordered pairs and find the hypotenuse of it using Pythagorean theorem or use the distance formula. I'm going to use the latter.

Distance formula = \sqrt{(X2-X1)^{2} + (Y2-Y1)^{2}} where (X1, Y1) is the first ordered pair listed and (X2, Y2) is the second.

Now, just plug in and solve.

Distance = \sqrt{(7-(-6))^{2} + (-8 - (-2))^{2}} \\ \sqrt{(7+6)^{2} + (- 8+2)^{2}} \\ \sqrt{13^{2} + (- 6)^{2}} \\ \sqrt{169 + 36} \\ \sqrt{205}

Your distance between the two points is √205 units or ≈ 14.32 units

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The school’s fish eat 1/5 jar of food per day. How many days will 4 1/2 jars feed them? Possible answers
leva [86]

Answer:

22 1/2 days

Step-by-step explanation:

All you gotta do is divide!

6 0
3 years ago
3. A rare species of aquatic insect was discovered in the Amazon rainforest. To protect the species, environmentalists declared
navik [9.2K]

The number of months until the insect population reaches 40 thousand is 14.29 months and the limiting factor on the insect population as time progresses is 250 thousands.

Given that population P(t) (in thousands) of insects in t months after being transplanted is P(t)=(50(1+0.05t))/(2+0.01t).

(a) Firstly, we will find the number of months until the insect population reaches 40 thousand by equating the given population expression with 40, we get

P(t)=40

(50(1+0.05t))/(2+0.01t)=40

Cross multiply both sides, we get

50(1+0.05t)=40(2+0.01t)

Apply the distributive property a(b+c)=ab+ac, we get

50+2.5t=80+0.4t

Subtract 0.4t and 50 from both sides, we get

50+2.5t-0.4t-50=80+0.4t-0.4t-50

2.1t=30

Divide both sides with 2.1, we get

t=14.29 months

(b) Now, we will find the limiting factor on the insect population as time progresses by taking limit on both sides with t→∞, we get

\begin{aligned}\lim_{t \rightarrow \infty}P(t)&=\lim_{t \rightarrow \infty}\frac{50(1+0.05t)}{2+0.01t}\\ &=\lim_{t \rightarrow \infty}\frac{50(\frac{1}{t}+0.05)}{\frac{2}{t}+0.01}\\ &=50\times \frac{0.05}{0.01}\\ &=250\end

(c) Further, we will sketch the graph of the function using the window 0≤t≤700 and 0≤p(t)≤700 as shown in the figure.

Hence, when the population P(t) (in thousands) of insects in t months after being transplanted by P(t)=(50(1+0.05t))/(2+0.01t) then the number of months until the insect population reaches 40 thousand 14.29 months and the limiting factor on the insect population is 250 thousand and the graph is shown in the figure.

Learn more about limiting factor from here brainly.com/question/18415071.

#SPJ1

8 0
2 years ago
Two consecutive negative integers have a product of 20. What are the integers
Mariulka [41]
The product<span> of </span>two consecutive negative integers<span> is 462. Determine the two </span>integers<span>. ... Since this is a quadratic equation, we'll </span>get<span> one side equal to zero (by subtracting 462 from each side): ... Since </span>20*20<span> = 400 we can start near there.</span>
5 0
3 years ago
Answer and explanation please?
nignag [31]
The answer would be A. m= -3/5 and b=-4/5
"m= -5-1 divided by 7--3
or, -6/10
or, -3/5.

to find the (B)

<span><span>(-3,1). y=mx+b or 1=-3/5 × -3+b, or solving for b: b=1-(-3/5)(-3). b=-4/5.</span><span>(7,-5). y=mx+b or -5=-3/5 × 7+b, or solving for b: b=-5-(-3/5)(7). b=-4/5.</span></span>See! In both cases we got the same value for b. And this completes our problem.

<span><span>The equation of the line that passes through the points(-3,1) and (7,-5)is</span><span>y=-3/5x-4/5"</span>
Source: webmath</span>
5 0
3 years ago
What is the answer to 8x-9=12+11x
mrs_skeptik [129]

Answer:

x = -7

Step-by-step explanation:

8x - 9 = 12 + 11x

Subtract 11x to both sides of the equation. Then, it will look like this:

-3x - 9 = 12

Add 9 to both sides of the equation. After that, it will look like this:

-3x = 21

Divide both sides of the eqution by -3. Your answer is:

x = -7

3 0
4 years ago
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