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user100 [1]
3 years ago
9

Can someone please help me out? This is literally torture.

Mathematics
2 answers:
Shkiper50 [21]3 years ago
8 0
4 is 2:6 7 is 25 8 is 8
kupik [55]3 years ago
5 0
3. There are 4 friends. A quarter of 4 is 25%. You can prove this by multipling 25% by 4 of the friends to get 100%. There is a 25% chance of Jonathon arriving first and a 25% chance that Michel will arrive second.
You might be interested in
Which of the following expressions has a coefficient of 6 and a constant of 9?
Tcecarenko [31]
It would be C because a coefficient is always with a variable and 6 is with a variable which makes it a coefficient

Hope this helps

Have a great day/night
6 0
3 years ago
Read 2 more answers
Explain why 3(5x) does not equal to (3 times 5)(3times x)
Anit [1.1K]

Answer:

Because 3(5x) is the same as 3 *5 * x

Step-by-step explanation:

When a number is next to another in parantheses, it signifies multiplication. In this case, we already have 5 and x grouped together by a multiplication sign, so the entire thing is 5 * x. The statement below is key

Distribution in multiplication is only possible if a variable is grouped to another real number by a plus or minus sign.

So in this case, we have 3 * 5 * x, which is 15x. However, if we had 3(5 + x), we would have 15 (3 * 5) + 3x (3 * x).

Hopefully that makes sense!

7 0
3 years ago
Use cylindrical coordinates. Find the volume of the solid that lies within both the cylinder x2 + y2 = 25 and the sphere x2 + y2
Inessa05 [86]

Answer:

Step-by-step explanation:

we are asked to find the volume of solid that lies within both the cylinder

x^2 + y^2 = 25

and

the spherex^2 + y^2 + z^2 = 49.

Conversion from rectangular to cylindrical is

x=rcost\\y = rsint\\z=z

|J| =r

In cylindrical coordinates the volume is bounded by the cylinder r=5 and

r^2+z^2 =49

Hence we can write volume as

\int \int \int dxdydz\\=\\\int _0^5 \int_0^{2\pi} \int_{-\sqrt{49-r^2} } ^{\sqrt{49-r^2} rdzdtdr\\= 2\pi \int _0^5 (2\sqrt{49-r^2} rdr\\=4\pi (-(49-r^2) (2/3)\\= \frac{4\pi}{3} (343-48\sqrt{6} )

6 0
3 years ago
SOMEONE HELP PLEASE !!! <br><br> n^2 - m; use m = 7, and n = 8
gladu [14]

Answer:

57

General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right

Step-by-step explanation:

<u>Step 1: Define</u>

n² - m

m = 7

n = 8

<u>Step 2: Evaluate</u>

  1. Substitute:                    8² - 7
  2. Exponents:                   64 - 7
  3. Subtract:                       57
7 0
2 years ago
The variables A,B,and C represent polynomials where A=x2, B=3x, and C=x-3 what is AB-C^2 in its simplest form
DedPeter [7]
This is the correct answer: 3x^3 - x^2 + 6x - 9
5 0
3 years ago
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