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DanielleElmas [232]
3 years ago
8

Helppppppppppppppppp

Mathematics
1 answer:
evablogger [386]3 years ago
5 0
We can first find how deep the drill could dig for an hour(a day consist of 24 hours):

60÷24
=2.5feet

We can then find how deep it would be for 15 hours:
2.5×15
=37.5 feet

The answer of a is 37.5feet.

For b,we can find the time by deviding the height by it's feet per hour:
143.6÷2.5
=57.44hours

Thus the answer of b is 57.44hours.

Hope it helps!
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Polygon YYY is a scaled copy of Polygon XXX using a scale factor of \dfrac13 3 1 ? start fraction, 1, divided by, 3, end fractio
gtnhenbr [62]

Answer:

1/9

Step-by-step explanation:

(1/3)^2 = 1/3 x 1/3 =1/9

plus I checked the answer after I got it wrong so...

7 0
4 years ago
Read 2 more answers
Please help thank you
Vlad1618 [11]

Answer:

The answer is c

Step-by-step explanation:

Because when a fraction is added with a whole number it decreases the value of the whole number.

Hope this helps<3

Have a great day

(I only chose to help you because you seem super nice :) lol)

8 0
3 years ago
Help me please, I will mark 5 star and favorite!
n200080 [17]

Answer:

The total money can be found using;

                 

                  = $10¹¹

Step-by-step explanation:

The total money can be found using;

                  = Amount made by each programmer x number of programmers

                  = $10⁵ x 10⁶

                  = $10¹¹

5 0
3 years ago
Read 2 more answers
If a bag contains 12 apples 4 bananas and 8 oranges what is the part - to- whole ratio of apple to all fruit
OLEGan [10]

Answer:

3 to 7 or 3:7 or 3/7

Step-by-step explanation:

So, there are 12 apples:                              12

                                                                   ------

There ar 12 + 8 = 20                     20 + 8 = 28 fruit total

So it is 12/28. But WAIT. You have to simplify so

12                  /                   4                           3

---                                    ------               =     -------

28                 /                   4                            7

4/4 = 1

So, 12/18 = 3/7. Meaning: There are 3 apples for every 7 total fruit. Ratio: 3 to 7 or 3:7 or 3/7

Can I be brainliest? TYSMMMMMMM

3 0
3 years ago
SOMEEEEONEEE pls help pls and thx :)
alekssr [168]

1) The sculptor created a marble basin with an approximate volume of 94,509.6 cubic centimeters -  Option D, 2) The approximate area of the heart-shaped cake is 283 square inches - Option B, 3) The length of the wooden frame around the window is 94.3 inches - Option B.

In this question we should make use of geometric formulas for volumes and areas and key information from statement in order to find the right choices.

1) In this case, the volume occupied by the marble water basin (V), in cubic centimeters, by subtracting the volume of the hemisphere from the volume of the cylinder:

V = \pi\cdot R^{2}\cdot h - \frac{2\pi}{3} \cdot r^{3} (1)

Where:

  • R - Radius of the cylinder, in centimeters.
  • h - Height of the cylinder, in centimeters.
  • r - Radius of the cylinder, in centimeters.

If we know that R = 30\,cm, h = 45\,cm and r = 25\,cm, then the volume of the marble is:

V = \pi \cdot (30\,cm)^{2}\cdot (45\,cm) - \frac{2\pi}{3}\cdot (25\,cm)^{3}

V \approx 94509.579\,cm^{3}

The right choice is D.

2) To determine the approximate surface area of the cake covered in red frosting (A_{s}), in square inches, we need to find the sum of the surface area of the entire circle and the surface area of the square:

A_{s} = l^{2} + 2\cdot l\cdot h + \frac{\pi}{4}\cdot D^2 + \pi \cdot D\cdot h (2)

Where:

  • l - Side length of the square, in inches.
  • h - Height of the cakes, in inches.
  • D - Diameter of the cakes, in inches.

If we know that l = 9\,in, h = 3\,in and D = 9\,in, then the <em>approximate</em> area covered in red frosting:

A_{s} = (9\,in)^{2} + 2\cdot (9\,in)\cdot (3\,in) + \frac{\pi}{4}\cdot (9\,in)^{2} + \pi \cdot (9\,in)\cdot (3\,in)

A_{s} \approx 283.440\,in^{2}

The right choice is B.

3) The frame around the window is found by means of the following perimeter formula (s), in inches:

s = \pi\cdot r + 2\cdot h + 2\cdot r (3)

Where:

  • r - Radius, in inches.
  • h - Height of the rectangle, in inches.

If we know that r = 9\,in and h = 24\,in, then the length of the frame around the window is:

s = \pi\cdot (9\,in) + 2\cdot (24\,in) + 2\cdot (9\,in)

s \approx 94.274\,in

The right choice is B.

We kindly invite to see question on volumes: brainly.com/question/1578538

7 0
3 years ago
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