1.an=n + 5 2.an-4n-1 3.an-2n2 4.an-5-2n 5.an-3-5n

Pls help help help help help

DochEvi [55]

Answer:

Both equal sides have a length of 29 cm.

The third inequal side is 9 cm.

Step-by-step explanation:

System of Equations

With the data provided in the problem, we can form a system of two equations with two unknowns.

Let's call x to each equal side of the isosceles triangle and y to the other side. One condition states that each equal side is 2 cm more than three times the other side. It can be written as:

$x=3y+2$

We also know the perimeter of the triangle is 67 cm. Since we have to equal sides to x:

$x+x+y=67$

$2x+y=67$

Let's put together both equations:

$x=3y+2$

$2x+y=67$

To solve the system, we can use the x from the first equation and replace it into the second equation:

$2(3y+2)+y=67$

Operating:

$6y+4+y=67$

Joining like terms:

$7y=67-4=63$

Solving for y:

$y=63/7=9$

The third inequal side is 9 cm. Now find the value of x.

$x=3y+2=3(9)+2=27+2=29$

Both equal sides have a length of 29 cm.

4 0

3 years ago

Willow Brook National Bank operates a drive-up teller window that allows customers to complete bank transactions without getting

luda_lava [24]

Answer:

2, 0.135, 0.270, 0.270, 0.180, 0.145

Step-by-step explanation:

1. To calculate the mean of people arriving in 5 minute period:

We know the arrival rate of minute is 0.4, so people arriving in 5 minutes will be

0.4 x 5 = 2

2. From part 1 it is known thay mean arrival time=2

For this we will use poisson's probability formula that is

P(X=x) = (2^x) x Exp^(-2/x!)

For X=0

P(X=0) = (2^0) x Exp^(-2/0!) = 0.135

For X = 1

P(X=1) = (2^1) x Exp^(-2/1!) = 0.270

For X = 2

P(X=2) = (2^2) x Exp^(-2/2!) = 0.270

For X = 3

P(X=3) = (2^3) x Exp^(-2/3!) = 0.180

3. For delay expected if more than 3 customer arrive in 5 minutes.

P(X>3) = 1 - P(X=0) - P(X=1) - P(X=2) - P(X=3)

P(X>3) = 1-0.135-0.270-0.270-0.180

P(X>3) = 0.145

5 0

3 years ago

Perform the indicated operations. Express the result in scientific notation. (5.7 × 105) + (4.6 × 106) – (2.9 × 105)

alex41 [277]

Answer:

1.3905 × 10^4

Step-by-step explanation:

First you should multiply all the two numbers inside the parentheses

5.7 × 105=598.5

4.6 × 106=487.6

2.9 × 105=304.5

Now add the three numbers

598.5+487.5+304.5= 1390.5

scientific notation: Put the decimal after the first digit. To find the exponent count the number of places from the decimal to the end of the number.

the answer in scientific notation: 1.3905 × 10^4

8 0

3 years ago

Abele bought a skirt and blouse. The skirt cost $15 more than the blouse. Let b represent the cost of the blouse. Write an algeb

julsineya [31]

S = b + 15

s = skirt
b = blouse

The skirt is $15 more than the blouse

7 0

2 years ago

Helppppppppppppppppppppppppppppppppppppppppp

mojhsa [17]

Answer:

$55.93 or rounded up is $56

Division

First, we would divide 15.98 by 2 to see how many dollars would a bag cost.

15.98 divided by 2 = $7.99

Multiplication

Then, we would multiply by 7 to see how may dollars would it cost for 7 kg bag

7.99 times 7 = 55.93

Round-up

If we round it up, we get $56.

Request

Please give me brainliest :)

6 0

2 years ago

Read 2 more answers

1.an=n + 52.an-4n-13.an-2n24.an-5-2n5.an-3-5n​

1.an=n + 52.an-4n-13.an-2n24.an-5-2n5.an-3-5n