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3 years ago

Which is the best reason why 318 + 368 is not equal to 6

Mathematics

1 answer:

8_murik_8 [283]3 years ago

5 0

Answer:

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Step-by-step explanation:

There are many expressions that could equal 6, but 318+368 is not one of them.

The solution to the expression is 686, which isn't 6.

-hope it helps

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What is the solution of n^2 - 49 = 0

Jlenok [28]

N² - 49 = 0
 + 49 + 49
 n² = 49
 n = +7

The solution to the problem is {7, -7}.

5 0

3 years ago

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The sum of two consecutive numbers is 73. what are the numbers?

brilliants [131]

Hey there!

2x+1=73.
2x=72.
x=36.

So the 2 consecutive numbers are 72 and 36!

Hope this helps! :)

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3 years ago

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A Gallup Poll used telephone interviews to survey a sample of 1030 U.S. residents over the age of 18 regarding their use of cred

Vlada [557]

Answer:

The 95% margin of error for this estimate is 0.0274 = 2.74 percentage points.

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of $\pi$ , and a confidence level of $1-\alpha$ , we have the following confidence interval of proportions.

$\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}$

In which

z is the zscore that has a pvalue of $1 - \frac{\alpha}{2}$ .

The margin of error is:

$M = z\sqrt{\frac{\pi(1-\pi)}{n}}$

95% confidence level

So $\alpha = 0.05$ , z is the value of Z that has a pvalue of $1 - \frac{0.05}{2} = 0.975$ , so $Z = 1.96$ .

72% of Americans said that they had at least one credit card

This means that $p = 0.72$

Give the 95% margin of error for this estimate.

$M = z\sqrt{\frac{\pi(1-\pi)}{n}}$

$M = 1.96\sqrt{\frac{0.72*0.28)}{1030}} = 0.0274$

The 95% margin of error for this estimate is 0.0274 = 2.74 percentage points.

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4 years ago

What formula would you use to calculate the mass of fermium-253 remaining after d days? f(d)=400(0.833)d f(d)=400(0.794)d f(d)=4

seraphim [82]

Answer:

f(d)=400(0.794)^d

Step-by-step explanation:

4 0

3 years ago

Write an equation in point slope and slope intercept form of a line that passes through the given point and has the given slope

Evgesh-ka [11]

Answer:

Point-Slope: $y+4=-\frac{1}{2}(x+3)$

Slope-Intercept: $y=-\frac{1}{2}x-\frac{11}{2}$

Step-by-step explanation:

The point-slope formula is $y-y_{1}=m(x-x_{1} )$ . The slope-intercept formula is $y=mx+b$ . Since we are given the point and slope, we can directly plug it into the point-slope formula.