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kvv77 [185]
3 years ago
9

Twice a number is at least 15

Mathematics
2 answers:
pochemuha3 years ago
5 0
The answer to this question is 7.5
oksian1 [2.3K]3 years ago
4 0

Idk, isn't it like 17??

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The diameter of a pizza is 14 inches. The pizza has 8 slices of equal size. Which of the following is the closest to the area of
qwelly [4]

Answer:

Step-by-step explanation:

First let us find the area of the whole pizza. Area of a circle is:

A=\pi r^2

Then, we have diameter as:

diameter\div2=radius

So, then using these formulas we would have,

16\div2=8\\A=8\pi \text{ or }25.12

Now, one slice is \frac{1}{8} of the entire pizza. So, we would have:

8\pi\div8=1\pi\\\text{ or }\\25.12\div8=3.14

<h2><u><em>HOPE THIS HELPS!!!!!!!!</em></u></h2>
8 0
2 years ago
Read 2 more answers
Tia’s car needs repairs. Honest Harry will charge $70 per hour plus $130 for the part. Lucky Lou will charge $80 per hour plus $
elena-s [515]
To answer the question above, let x the number of hours for the two jobs to cost equal. Harry's charge can be expressed as 70x + 130 and that of Lou is 80x + 40. Equating both, 
  
                               70x + 130 = 80x + 40      ; x = 9

Thus, the job should take 9 hours for both charges to be equal. 
3 0
3 years ago
Read 2 more answers
A solid toy is in the form of a hemisphere surmounted by a right circular cone. The height of the cone is 4 cm and diameter of t
docker41 [41]

Answer:

See below ~

Step-by-step explanation:

<u>Things to Find</u>

  1. Volume of Toy
  2. Difference of Volumes in Cube and Toy
  3. Total Surface of Toy

<u>Volume of Toy</u>

  • Volume of Hemisphere + Volume (Cone)
  • 2/3πr³ + 1/3πr²h
  • 1/3πr² (2r + h)
  • 1/3 x 3.14 x 16 (8 + 4)
  • 1/3 x 50.24 x 12
  • 50.24 x 4
  • <u>200.96 cm³</u>

<u></u>

<u>Volume of Circumscribing Cube</u>

  • Edge length is same as diameter
  • V = (8)³
  • V = 512 cm³

<u>Difference in Volume</u>

  • 512 - 200.96
  • <u>311.04 cm³</u>

<u></u>

<u>Slant height of cone</u>

  • l² = 4² + 4²
  • l² = 32
  • l = 4√2 cm = 5.6 cm

<u />

<u>Surface Area of Toy</u>

  • CSA (hemisphere) + CSA (Cone)
  • 2πr² + πrl
  • πr (2r + l)
  • 3.14 x 4 (8 + 5.6)
  • 12.56 x 13.6
  • <u>170.8 cm²</u>
3 0
1 year ago
The sum of the measures of angle 4,7, and _____ is equal to 180
8_murik_8 [283]
7 I think because if you would put a zero behind the 4 and 7 and add them together it will be 110 and all that's left if u subtract them from 180 is 70 (7)
6 0
3 years ago
Solve 3x - 12 = 3x + 4<br> REALLY need help with this!!!<br> Please show ALL of your work<br> :)
bazaltina [42]

Answer: It has no solution.


Step-by-step explanation:

3x - 12 - 4 = 3x + 4 - 4

3x - 8 = 3x

3x - 8 - 8 = 3x - 8

we can't subtract 3x-8

Doesn't add up; they need to have one solution or more for it to work.

7 0
3 years ago
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