1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
posledela
3 years ago
5

Which expression is equivalent to 4(3x+5y+2z)+3(x-z)

Mathematics
1 answer:
Anni [7]3 years ago
4 0
A. 12x+20y+8z...it's a simple distributive property question :)
You might be interested in
Please help me with this question.
Inessa [10]

Answer:

B

Step-by-step explanation:

The SA of a cone is A=pi*r^2+pi*r*s

So instead of pi*5^2, it should be pi*3*5 (5 is the length of the slant).

5 0
3 years ago
Read 2 more answers
I need to solve this question asap
jeyben [28]

Answer:

im sorry I just need to us ur page to right on

7 0
2 years ago
Suppose you pick two cards from a deck of 52 playing cards. What is the probability that they are both queens?
photoshop1234 [79]

Answer:

0.45% probability that they are both queens.

Step-by-step explanation:

A probability is the number of desired outcomes divided by the number of total outcomes

The combinations formula is important in this problem:

C_{n,x} is the number of different combinations of x objects from a set of n elements, given by the following formula.

C_{n,x} = \frac{n!}{x!(n-x)!}

Desired outcomes

You want 2 queens. Four cards are queens. I am going to call then A,B,C,D. A and B is the same outcome as B and A. That is, the order is not important, so this is why we use the combinations formula.

The number of desired outcomes is a combinations of 2 cards from a set of 4(queens). So

D = C_{4,2} = \frac{4!}{2!(4-2)!} = 6

Total outcomes

Combinations of 2 from a set of 52(number of playing cards). So

T = C_{52,2} = \frac{52!}{2!(52-2)!} = 1326

What is the probability that they are both queens?

P = \frac{D}{T} = \frac{6}{1326} = 0.0045

0.45% probability that they are both queens.

4 0
3 years ago
A sum of money is divided amongst Farah, Shaiyara and Zahin in the ratio 10: 7: 5. If
r-ruslan [8.4K]

Answers:

  • Total amount of money =  220 dollars
  • Amount Farah gets = 100 dollars

==========================================================

Explanation:

  • F = amount Farah gets
  • S = amount Shaiyara gets
  • Z = amount Zahin gets

The money is divided in the ratio 10:7:5

This means that

  • F = 10x
  • S = 7x
  • Z = 5x

for some positive real number x.

Since Shaiyara gets $20 more than Zahin, we can say,

S = Z+20

Let's plug in S = 7x and Z = 5x and solve for x

S = Z+20

7x = 5x+20

7x-5x = 20

2x = 20

x = 20/2

x = 10

Therefore,

  • F = 10x = 10*10 = 100
  • S = 7x = 7*10 = 70
  • Z = 5x = 5*10 = 50

The ratio F:S:Z becomes 100:70:50 which reduces fully to 10:7:5 after dividing all three parts by the GCF 10.

The total sum of money shared is 100+70+50 = 220 dollars and Farah gets $100 of that total.

6 0
2 years ago
The veloctiy of sound in air is given by the equation v=20 times the square root of 273+t where v is the velocity in meters per
Nikitich [7]
So we just need to plug in our values and solve
v = 20 \sqrt{273 + t}
we are given v is 369 so we have
369 = 20 \sqrt{273 + x}
now we solve for x.
divide both sides by 20
square both sides
subtract 273 from both sides
369 = 20 \sqrt{273 + x}  \\ 18.45 =  \sqrt{273 + x}  \\ 340.40 = 273 + x \\ x = 67.4
so a temp of about 67 degrees C
5 0
2 years ago
Read 2 more answers
Other questions:
  • Which equation represents a circle with a center at (-4, 9) and a diameter of 10 units?
    7·1 answer
  • PLEASE HELP! ANSWER NEEDED ASAP!!!<br> <img src="https://tex.z-dn.net/?f=%5Cint%5Climits%20x%5E3%20%28x-%20%5Csqrt%7Bx%7D%20%2B2
    12·1 answer
  • Someone help I really need it.
    15·2 answers
  • When factored completely, m^5 + m^3 -6m is equivalent to what
    15·1 answer
  • a 9 grade math class has 27 students there are twice as many girls in this class as there are boys.write a system of equation th
    15·1 answer
  • What is the density of a material, if 132 grams of the material occupies 3 cubic centimeters?
    5·1 answer
  • A group of four components is known to contain two defectives. An inspector tests the components one at a time until the two def
    7·1 answer
  • In a survey of 100 people, 10 preferred onions on their hot dogs. What percent preferred onions?
    7·1 answer
  • Which statement correctly describes the expression 6(-16)
    11·2 answers
  • The hypotenuse of a right triangle measures 15 cm and one of its legs
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!