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Liula [17]
3 years ago
9

Suppose that you ask three friends to go to the mall. each one has a 0.80 chance of saying yes. what is the probability that all

three friends will say they can go to the mall with you?
Mathematics
2 answers:
blondinia [14]3 years ago
5 0
The probability is 0.512
Lyrx [107]3 years ago
5 0

Answer:

0.512

Step-by-step explanation:

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Kim and Danielle each improved their yards by planting hostas and ivy. They bought their supplies from the same store. Kim spent
svetlana [45]

Answer:

The cost of one hosta is $6

Step-by-step explanation:

A system of linear equations is a set of two or more equations of the first degree, in which two or more unknowns are related.

Solving a system of equations consists of finding the value of each unknown so that all the equations of the system are satisfied.

In this case, the variables are:

  • x = price of a hosta .
  • y = price of a pot of ivy.

If Kim spent $62 on 5 hostas and 4 pots of ivy, t his is represented by the equation: 5*x +4*y= 62

If Danielle spent $144 on 8 hostas and 12 pots of ivy, t his is represented by the equation: 8*x +12*y=144

So, the system of equations to solve is:

\left \{ {{5*x+4*y=62} \atop {8*x+12*y=144}} \right.

One way to solve a system of equations is through the substitution method, which consists of solving or isolating one of the unknowns (for example, x) and substituting its expression in the other equation. In this way, you obtain an equation of the first degree with the other unknown, and. Once solved, you calculate the value of x by substituting the already known value of y.

Isolating y from the first equation:

y=\frac{62-5*x}{4}

and replacing this expression in the second equation you get:

8*x +12*\frac{62-5*x}{4}=144

Solving:

8*x +\frac{12}{4}*(62-5*x)=144

8*x + 3*(62-5*x)=144

8*x + 3*62 - 3*5*x=144

8*x + 186 - 15*x=144

8*x  - 15*x=144 -186

(-7)*x= -42

x= (-42)÷ (-7)

x= 6

<u><em>The cost of one hosta is $6</em></u>

8 0
2 years ago
10.3 = 0.6y How do I find the answer to this on please
Alex73 [517]
To solve for y, you want to have all unknowns on one side and knowns on the other. to do this, we can divide both sides by 0.6 so that the knows are on the second side and y on the other. then, we can simplify to solve for y
3 0
3 years ago
Suppose that 15 years ago, a benefactor set up an account for your education. This benefactor made a single deposit of $20,000 t
drek231 [11]

Answer:

No it wont

Step-by-step explanation:

7 0
3 years ago
Find the value of the expression mentally.
pentagon [3]

Answer:

60

Step-by-step explanation:

This is multiplying by the powers of 10:

100=10^{2}

Equation:-

          =(0.6) x 10^{2}

          =60

5 0
3 years ago
Can someone help me with Surface area?
postnew [5]
Find the area of each individual shape and add those answers to get the entire sum
8 0
3 years ago
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