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4 years ago

Hello!~ :> I need help.

Mathematics

1 answer:

Damm [24]4 years ago

5 0

The Correct answer is C) Between 26 and 27 hours

Step-by-step explanation:

Jeremy is bulding bookcase for some teacher at his school

If jeremey build 1 bookcase in 45 mins

Time taken by jeremey to build 35 bookcases will be

=45×35 mins

Converting into hours,

We know that, 1 Hour = 60 mins

=45×35 mins = $\frac{45 \times 35}{60}$ hours

=26.25 hours

Thus, The Correct answer is C) Between 26 and 27 hours

You might be interested in

Which of the following numbers in the data set is an outlier? 21, 23, 19, 25, 83, 23, 21

postnew [5]

The outlier in this set of data is 83.

The outlier in a data set is any number that is <em>much </em>higher or lower than the average of the set.

83 is nowhere near the average of 23 in this set, and so it is the sole outlier.

Hope this helps!

6 0

3 years ago

Maybe brainliest if its right

ahrayia [7]

Answer:

2.5 cm

Step-by-step explanation:

5 Cm is the diameter and the radius is half the diameter so 5/2=2.5 or 1/2

4 0

3 years ago

Read 2 more answers

PLEASE HELP ASAP!!!<br><br> Find the length of AC.<br><br> Express your answr in terms of pi.

Rainbow [258]

<h3>Answer: 8pi</h3>

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

Explanation:

circumference = distance around the circle

In other words, if you had a curved fence around the circle, then the circumference is the perimeter of that circle (telling you how much fencing you need, assuming there's no waste)

The formula for the circumference is C = pi*d where d is the diameter. In this case, 24 ft is the diameter because this segment goes from one point on the circle to another, and this line goes through the center.

The circumference of this full circle is...

C = pi*d

C = pi*24 ... replace d with 24

C = 24pi

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

Now we don't want the whole distance around the circle. We only want a small fraction of it. Specifically from A to C along the shortest route (this is called minor arc AC). The angle measure of arc AC is 120 degrees. Why? This is because 180 - x = 180 - 60 = 120, the x = 60 refers to the measure of minor arc BC. The two arc measures combine to get 180 degrees.

Using the fact that minor arc AC is 120 degrees, this means the distance along the arc AC is 120/360 = 1/3 of the entire circumference. Note how I divided 120 over 360 because there are 360 degrees in a full circle

So...

distance along minor arc AC = (1/3)*(circumference)

distance along minor arc AC = (1/3)*(24pi)

distance along minor arc AC = 8pi

8 0

3 years ago

B. 18.5 m, 11 m, 15 m

eduard

Answer:

What is the question, lady

5 0

3 years ago

Read 2 more answers

Identity the conic section whose equation is R=1/(2-3sinx)

Nataliya [291]

Answer:

hyperbola

Step-by-step explanation:

A graphing calculator shows the equation is that of a hyperbola.

Multiplying by the denominator gives ...

r(2 -3sin(x)) = 1

2r -3y = 1 . . . . . . . . substituting y=r·sin(x)

2r = 1 +3y . . . . . . . .isolating r

4r² = 1 +6y +9y² . . squaring both sides

4(x² +y²) = 1 +6y +9y² . . . . . substituting x²+y² = r²

4x² -5y² -6y -1 = 0 . . . . . . . . general form equation of a hyperbola

6 0

3 years ago