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bezimeni [28]
3 years ago
15

Type the integer that makes the following subtraction sentence true for Brainliest!!!!!!!!!!

Mathematics
1 answer:
Taya2010 [7]3 years ago
5 0
-4 because -12 - (-4)= -8
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Help plz need asap!!
Otrada [13]
For the first question, x = 4
6 0
3 years ago
A researcher reports a 98% confidence interval for the proportion of Drosophila in a population with mutation Adh-F to be [0.34,
Fantom [35]

Answer:

0.34 \leq p \leq 0.38

For this case we can conclude that with 98% of confidence the true proportion of Drosophila in a population would be between 0.34 and 0.38.

But that doesn't means that we have 98% of PROBABILITY that the true proportion would be between 0.34 and 0.38, because we are constructing a confidence interval with sample data and we can't analyze this using probability.

Then the best answer is:

2. False

Step-by-step explanation:

For this case we have a confidence interval for the proportion of Drosophila in a population with mutation Adh-F to be given by:

0.34 \leq p \leq 0.38

For this case we can conclude that with 98% of confidence the true proportion of Drosophila in a population would be between 0.34 and 0.38.

But that doesn't means that we have 98% of PROBABILITY that the true proportion would be between 0.34 and 0.38, because we are constructing a confidence interval with sample data and we can't analyze this using probability.

Then the best answer is:

2. False

3 0
3 years ago
A rectangle is to be inscribed in an isosceles right triangle in such a way that one vertex of the rectangle is the intersection
svet-max [94.6K]

Answer:

x  =  2  cm

y  = 2  cm

A(max) =  4 cm²

Step-by-step explanation: See Annex

The right isosceles triangle has two 45° angles and the right angle.

tan 45°  =  1  =  x / 4 - y        or     x  =  4  -  y     y  =  4  -  x

A(r)  =  x* y

Area of the rectangle as a function of x

A(x)  =  x  *  (  4  -  x )       A(x)  =  4*x  -  x²

Tacking derivatives on both sides of the equation:

A´(x)  =  4 - 2*x             A´(x)  =  0            4   -  2*x  =  0

2*x  =  4

x  =  2  cm

And  y  =  4  - 2  =  2  cm

The rectangle of maximum area result to be a square of side 2 cm

A(max)  = 2*2  =  4 cm²

To find out if A(x) has a maximum in the point  x  =  2

We get the second derivative

A´´(x)  =  -2           A´´(x)  <  0   then A(x) has a maximum at  x = 2

5 0
2 years ago
Two sides of a parallelogram are 500 feet and 790 feet. The measure of the angle
Nat2105 [25]

Answer:

  • 215117 ft²

Step-by-step explanation:

Assumed the base is the longer side.

<u>The height of the parallelogram is:</u>

  • h/500 = sin 33°
  • h = 500 sin 33°
  • h =  272.3 ft

<u>The area is:</u>

  • A = bh
  • A = 790*272.3 = 215117 ft²
3 0
3 years ago
Read 2 more answers
An animal shelter spends $3.50 per day to care for each bird and $8.50 per day to care for each cat. Jaxson noticed that the she
ANEK [815]
X+y=24
3.5x+8.5y=114

X=18
18 birds
3 0
3 years ago
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