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3 years ago

50 POINTS!!! I WILL GIVE BRAINLIEST!!!!!

Mathematics

2 answers:

dedylja [7]3 years ago

6 0

Sixteen more than twice a number m is 36:

2m + 16 = 36 <em>subtract 16 from both sides</em>

2m = 20 <em>divide both sides by 2</em>

dedylja [7]3 years ago

3 0

The equation would be worded as: 2m+16=36.

Solve! Using the subtraction property of equality, 2m=20. Then the division property of equality lets us figure out that m=10.

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SHOW YOUR WORK!!!!!!!!!!!!!!!!!!!

Oduvanchick [21]

Answer:

My Answer: <u>33.95</u>

Step-by-step explanation:

x - 13.75 = 20.2

so because it is subtracting we have to add.

x - 13.75 + 13.75 = 20.2 + 13.75

when added, x will cancel out, and we will be left with the answer.

x = 33.95

GL!

-Oceaniii

3 0

3 years ago

In the above figure, the radius of curvature is 10 ft and the height of the segment is 2 ft. What's the length of the chord?

erma4kov [3.2K]

A about 12 feet is the lenth of the cord

4 0

3 years ago

sam goes to the market to buy a hamburger for cookout. he buys 3 3/4 pounds if a hamburger. how many 1/4 pound patties can he ma

Alexandra [31]

3 3/4÷ 1/4
15/4÷1/4
15/4÷4/1
15*4=60
4*1=4
60/4=15
15 times 1/4 can fit into 3 3/4.

7 0

3 years ago

ANOTHER ONE AGAIN PLSSSSS

mina [271]

Answer:

Luka had 6 slices, Kira had 9 slices and Ali 12 slices

Step-by-step explanation:

Each had 2/3 of their slices hence

Luka = 3/2 x 4 slices = 6

Kira = 3/2 x 6 slices = 9

Ali = 3/2 x 8 slices = 12

6 0

3 years ago

A recent survey based on a random sample of n=470 voters, predicted that independent candidate for the mayoral election will get

julsineya [31]

I have an expression

$\sigma = \sqrt{p(1-p)/n}$

floating around in my head; let's see if it makes sense.

The variance of binary valued random variable b that comes up 1 with probability p (so has mean p) is

$E( (b-p)^2 ) = (-p)^2(1-p) + (1-p)^2p = p(1-p)$

That's for an individual sample. For the observed average we divide by n, and for the standard deviation we take the square root:

$\sigma = \sqrt{p(1-p)/n}$

Plugging in the numbers,

$\sigma = \sqrt{.24(1-.24)/490} = 0.019 = 1.9\%$

One standard deviation of the average is almost 2% so a 27% outcome was 3/1.9 = 1.6 standard deviations from the mean, corresponding to a two sided probability of a bit bigger than 10% of happening by chance.

So this is borderline suspect; most surveys will include a two sigma margin of error, say plus or minus 4 percent here, and the results were within those bounds.

7 0

3 years ago