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ser-zykov [4K]
2 years ago
7

A rectangular painting is 42 centimeters wide and 51 centimeters long. What is the perimeter of this painting?

Mathematics
1 answer:
Alex2 years ago
6 0
186cm
You add all the sides up, so 42+42+51+51 which equals 186cm
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the length of the base of an isosceles triangle is x. The length of a leg is 4x-5. The terminator of the triangle is 35. find x.
vodomira [7]

Answer:

x= 5

Step-by-step explanation:

We are given;

  • Base of the triangle as x
  • Length of the leg is 4x-5
  • An isosceles triangle has two equal legs and a base.
  • The perimeter of the triangle is 35 (spelling mistake in the question)

To get the perimeter of a triangle we add the lengths of all sides of the triangle.

Therefore;

x + 4x-5 + 4x-5  = 35

9x - 10 = 35

9x = 45

  x = 5

Thus, the value of x is 5

7 0
3 years ago
Express the confidence interval
marissa [1.9K]

Answer:

\hat p = \frac{0.244+0.326}{2}=0.285

ME = \frac{0.326-0.244}{2}=0.041

0.285 \pm 0.041

Step-by-step explanation:

For this case we have a confidence interval given as a percent:

24.4\% \leq p \leq 32.6\%

If we express this in terms of fraction we have this:

0.244 \leq p \leq 0.326

We know that the confidence interval for the true proportion is given by:

\hat p \pm z_{\alpha/2} \sqrt{\frac{\hat p(1-\hat p)}{n}}

And thats equivalent to:

\hat p \pm ME

We can estimate the estimated proportion like this:

\hat p = \frac{0.244+0.326}{2}=0.285

And the margin of error can be estimaed using the fact that the confidence interval is symmetrical

ME = \frac{0.326-0.244}{2}=0.041

And then the confidence interval in the form desired is:

0.285 \pm 0.041

7 0
3 years ago
NEED HELP ASAP!!!
Reika [66]
To effectively and correctly answer this and help we'll need a photo diagram for the question. We need to see a graph of some sort to even know where to start this off. It'd probably be solvable without a diagram if you don't have one, but I don't think that many people have the skill to do so (at least I don't). I know how terrible I feel when no one answers my questions, so I thought I'd let you know why others might not be answering this for you. I'm pretty sure you can update the question and attach a photo (an actual photo or a screenshot) to it, via the paperclip icon. Have a great day! :)
5 0
2 years ago
Please answer this multiple choice question correctly for 30 points and brainliest!!
Tema [17]

Answer:

A

Step-by-step explanation:

it has to do with the people's ethnics or standard or values.

The statement is not ambiguous so it has no language barrier

8 0
3 years ago
Read 2 more answers
Mac's age is 3 years less than twice Joe's age. The sum of their ages is 30. Find their ages.
k0ka [10]

Answer:

Mac is 19 years old, Joe is 11 years old

Step-by-step explanation:

2J - 3 = M

J + M = 30

M = 30 - J

2J - 3 = 30 - J

3J = 33

J = 11

M = 30 - 11

M = 19

4 0
3 years ago
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