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BaLLatris [955]
3 years ago
12

Rn help help help help

Mathematics
1 answer:
Ivenika [448]3 years ago
7 0

Answer:

A regular (equilateral) triangle

Step-by-step explanation:

A triangle is regular if all their side are the same, which is the case here.

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A pollster contacts 74 people in the 18-21 age bracket and finds that 38 of them respond and 36 refuse to respond. When 297 peop
Nonamiya [84]

Answer:

0,250

Step-by-step explanation:

The probability that you looking for is sum of probability of getting someone in the 18-27age (74 persones) and probability to getting someone who refused (36 and 19 persones) - probability of getting some of 18-27 age who refused (36 persons).

The probability is:

P(a or b)= p(a)+p(b)-p(a&b)=74/371+(36+19)/371-36/371=0,199+0,148-0,097=0,250

7 0
3 years ago
Dy/dx = y/x^2
Lady_Fox [76]
Dy/dx = y/(x^2)
dy/y = dx/(x^2)
int[dy/y] = int[dx/(x^2)] ... apply integral to both sides
ln(|y|) = (-1/x) + C
|y| = e^{(-1/x) + C}
|y| = e^C*e^(-1/x)
|y| = C*e^(-1/x)
y = C*e^(-1/x)

So you have the correct answer. Nice job.

------------------------------------------------

Check:
y = C*e^(-1/x)
dy/dx = d/dx[C*e^(-1/x)]
dy/dx = d/dx[-1/x]*C*e^(-1/x)
dy/dx = (1/(x^2))*C*e^(-1/x)
is the expression for the left hand side (LHS)

y/(x^2) = [C*e^(-1/x)]/(x^2)
y/(x^2) = (1/(x^2))*C*e^(-1/x)
is the expression for the right hand side (RHS)

Since LHS = RHS, this confirms the solution for dy/dx = y/(x^2)
8 0
4 years ago
Explain how you can compare the size of a product to the size of a factor when multiplying fractions without actually doing mult
MAXImum [283]
Answer: If you multiply a number by a fraction less than 1, the resulting product will be smaller than the original fraction.

Imagine, if you had half a pizza and you ate one-half of that. You would multiply 1/2 by 1/2 and get an even smaller number. The result would be 1/4.

On the other hand, if you multiply a number by a mixed number that is larger than one, the result would be larger than when you started.
5 0
3 years ago
HEEEEELLLLLLLPPPP WITHHHHHH MATHHHHH
ale4655 [162]

ANSWER:

∠1 = ∠4 (Vertically opposite angle).

∠1 = ∠5 (Corresponding angle).

∠1 = ∠8 (Alternate exterior angle).

So, ∠4 , ∠5 and ∠8 are congruent to ∠1.

6 0
3 years ago
Read 2 more answers
a spaghetti recipe calls for 72 ounces of ground beef. How many pounds of meat does the recipe call for?
nignag [31]

Answer:

1 ounce =0.0625 pounds

if 72 ounces then you multiply it by 0.0625=45

so the recipe calls for 45 pounds of meat

3 0
3 years ago
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