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3 years ago

A basket holds n apples. You pick (2n − 3) apples, and your friend picks (n + 4) apples.

Mathematics

1 answer:

tatiyna3 years ago

5 0

Answer:The equation would be 3n+1 apples.

Step-by-step explanation:

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At a baseball game, one lucky ticket holder will win an all-expense paid family vacation from one of the baseball team's corpora

mina [271]

the answer is A :)

Step-by-step explanation:

7 0

3 years ago

1) solve for w: 3w - 10 = 4w + 5 2) solve for t:6 -2t >18

Gre4nikov [31]

Problem # 1
3w-10=4w+5
(3w-10) + (10-4w) = (4w+5) + (10-4w)
(3w-10) + (-4w+10) = (4w+5) + (-4w +10)
3w-10-4w+10 = 4w +5 -4w +10
3w-4w=15
-w=15
w= -15 (w is negative 15)

problem #2.
6-2t > 18
6-2t-6 > 18-6
-2t > 12
(-1) (-2t) > 12 (-1)
2t > -12
next divide by 2
2t/2 > -12/2
t > -6 (t is greater then negative 6)

5 0

4 years ago

Round 7.2352297363 to the nearest millionth.

Natasha2012 [34]

7.2352297363 rounded to the nearest millionth would be 7.235230 and all I did to get the answer was count from left to right and keep the first six numbers, and round 229 up one spot and make it 230, to get the answer.

7 0

3 years ago

5x-2y=-3 -2x-y=-6 método de reducción suma y resta con procedimiento y respuesta doy corona a quien me ayude en menos de media h

maw [93]

Answer:

(1, 4)

Step-by-step explanation:

5x-2y=-3 -2x-y=-6 =>

5x-2y=-3

-2x-y=-6 Multiply all three terms by -2: 4x + 2y = 12

Then we have:

5x-2y=-3

4x + 2y = 12

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

9x = 9 and so x = 1. Then, using -2x - y = -6, and substituting 1 for x:

-2(1) - y = -6, or

2 + y = 6, or

y = 4

Then the solution is (1, 4)

6 0

3 years ago

When the sample size and the sample proportion remain the same, a 90 percent confidence interval for a population proportion p w

deff fn [24]

Answer:

A 90% confidence interval for p will be narrower than the 99% confidence interval.

Step-by-step explanation:

The formula to compute the (1 - α) % confidence interval for a population proportion is:

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

Here $\hat p$ is the sample proportion.

The margin of error of the confidence interval is:

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

The MOE is dependent on:

Confidence level
Standard deviation
Sample size

The MOE is directly related to the confidence level and standard deviation.

So if any of the two increases then the MOE also increases, thus widening the confidence interval.

And the MOE is inversely related to the sample size.

So if the sample increases the MOE decreases and vice versa.

It is provided that the sample size and the sample proportion are not altered.

The critical value of z for 90% confidence level is:

$z_{\alpha/2}= z_{0.10/2}=z_{0.05}=1.645$

And the critical value of z for 99% confidence level is:

$z_{\alpha/2}= z_{0.05/2}=z_{0.05}=1.96$

So as the confidence level increases the critical value increases.

Thus, a 90% confidence interval for p will be narrower than the 99% confidence interval.

6 0

3 years ago