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Klio2033 [76]
3 years ago
7

Review the diagram of a locket in the shape of an ellipse.

Mathematics
2 answers:
Helen [10]3 years ago
8 0

Answer:

B

Step-by-step explanation:

If you graph y^2/361 + x^2/169=1 you will get the same graph depicted in the equation.

Galina-37 [17]3 years ago
6 0

Answer:

D

Step-by-step explanation:

If a = 38 and b = 26 then the equation would be y^2/1444 + x^2/676 = 1

also just graph it or smth

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4. Entomologists introduce 20 of one
Lina20 [59]

Answer:

This number can be found using the Rule of 70, which describes the formula dt = 70 / r, where dt is the doubling time, and r is the annual rate of growth.

Step-by-step explanation:

24/6 = 4

20 x 2 = 40 x 2 = 80 x 2 = 160 x 2 = 320

20 ---> 320 in the first day.

Keep doing this equation. Multiply each day's end result by 2 four times for 9 more days.

8 0
3 years ago
If it takes 5 1/4 minutes to make one cut through a log, how long will it take to cut a 5 ft log into 5 equal pieces?
vovikov84 [41]

Answer:

131.25

Step-by-step explanation:

5.25*(5*5)

5 0
2 years ago
Read 2 more answers
A shop has a sale that offers 20% off all price. On the final day they reduce all the sale prices by 25%. Linz buys a radio on t
erastova [34]
Hmmmm is not very clear if the 25% is just 25% of the original price, or of the reduced price, but let's assume is of the reduced price.

say the original price is "x", 20% off that, means the sale price is 80% of the original price, or (80/100) * x, or 0.8x.

then Linz shows up on the last day, and she's got 25% off from that price plus a beanie baby and a free garden hose.

so if the price is reduced by 25%, then the sale price is just 75% of whatever it was, but it was already reduced to 0.8x, what is 75% of 0.8x?

(75/100) * 0.8x, or 0.75 * 0.8x, which is 0.6x, now 0.6 * 100 is 60 to change it to percentage format, or 60% overall percentage reduction from the original price.
6 0
3 years ago
What are the coordinates of a point that is 7 strides west of (2,-1)
SIZIF [17.4K]
The coordinates are (-5,1).
4 0
2 years ago
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on a map with a scale 1: 25000,the area of a lake is 33.6 square centimeters. calculate the actual area of the lake, giving your
svlad2 [7]

Given :

On a map with a scale 1: 25000 .

The area of a lake is 33.6 square centimeters.

To Find :

The actual area of the lake.

Solution :

Let, actual area of lake is A.

So,

\dfrac{33.6}{A}=\dfrac{1}{25000}\\\\A = 840000\ cm^2

We know , 1 \ cm^2 = 10^{-10}\ km^2

Area in km² is :

A = 840000\times 10^{-10}\ km^2\\\\A = 8.4 \times 10^{-5}\ km^2

Hence, this is the required solution.

6 0
2 years ago
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