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3 years ago

The standard deviation of a population is 2.8. What is the margin of error?

Mathematics

2 answers:

lawyer [7]3 years ago

8 0

Answer:

THE ANSWER IS 5.6! Just ttook the test

Step-by-step explanation:

Leno4ka [110]3 years ago

6 0

Plz give me some w
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If the temperature at 7am was (-4) degrees celcius and the temperature rose 17 degrees celcius during the morning, what was the

cupoosta [38]

Answer:

the temperature is 10 degrees F at 7 pm, and -2 degrees F at 7 am the next morning. How much did the temperature change between 7 pm and 7 am

6 0

3 years ago

Read 2 more answers

In ∆ABC the angle bisectors drawn from vertexes A and B intersect at point D. Find ∠ADB if:

icang [17]

Answer:

155°

Step-by-step explanation:

In Δ ABC, let A = x°

By Angle-sum property,

A + B + C = 180°

But, it is given that C = 130°

So, x + B + 130 = 180

B = 180 - 130 - x

B = 50 - x

Since AD and BD are internal bisectors of A and B,

∠ DAB = x/2 and

∠ DBA =

In Δ ADB, by angle-sum property,

∠ DBA + ∠ DAB +∠ ADB = 180°

+ ∠ ADB = 180°

25 + ∠ ADB = 180°

∠ ADB = 180 - 25 = 155°

Hence, ∠ ADB = 155°

3 0

3 years ago

Which system of equations has a solutions x=0,y=1?

Vilka [71]

Answer:

y+x=1

y-x=1

Step-by-step explanation:

Well If x is 0, its pretty straight forward.

1+0=1

1-0=1

lol hope this helps

6 0

3 years ago

Square pyramid is made up of a base with a side length of 10 inches and faces that are triangles with a height of 12 inches what

Nataly [62]

The surface area of the square pyramid is 360 in²

Explanation:

Given that the side length is 10 inches.

The height of the pyramid is 12 inches.

We need to determine the surface area of the pyramid.

The surface area of the pyramid is given by

$SA=s^2+2sl$

Where s is the side length and l is the slant height.

The slant height can be determined using the formula,

$l=\sqrt{h^2+b^2}$

where h = 12 and $b=\frac{s}{2} =5$

Substituting these values in the formula, we get,

$l=\sqrt{12^2+5^2}$

$=\sqrt{144+25}$

$l=\sqrt{169}$

$l=13$

Thus, the slant height is $l=13$

Now, we shall find the surface area of the pyramid.

Substituting $l=13$ and $s=10$ in the formula $SA=s^2+2sl$ , we get,

$SA=10^2+2(10)(13)$

$=100+260$

$SA=360 \ in^2$

Thus, the surface area of the square pyramid is 360 in²

5 0

4 years ago

The water company that serves St. George Island charges a base facility fee of $32.00 each month. In addition, they charge $6.53

prohojiy [21]

The function for the monthly charge for water service would be

F(x) = 32 + 6.53x where x=the number of kilogallons used.

8 0

4 years ago