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3 years ago

Pleaseeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee helpppppppppppppppppppppppppppppppppppppppppppppppppppppp

Mathematics

1 answer:

Romashka [77]3 years ago

7 0

Answer:

rectangle square,

Step-by-step explanation:

square and rectangle done.

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What is the simple interest rate <br>

postnew [5]

Answer:

Uhh maybe 20284646392

Step-by-step explanation:

3 0

3 years ago

An alloy is composed of nickel, zinc, and copper in a 7:2:9 ratio. How many kilograms of each metal is needed to make 3.8 kg of

Tamiku [17]

Ni : Zn: Cu = 7:2:9 =7x : 2x : 9x

7x+2x+9x = 3.8
18x=3.8
x=3.8/18=1.9/9≈0.21

Ni: 7x=7*0.21=1.47 ≈1.5 kg
Zn: 2x=2*0.21=0.42≈0.4 kg
Cu: 9x=9*0.21=1.89 ≈1.9 kg

Check 1.5+0.4+1.9 =3.8 True

6 0

3 years ago

HELPP it’s angles of a triangle much appreciated !

bulgar [2K]

Answer:

The coastline of alaska is longer than the entire coastline of the lower forty-eight states

3 0

2 years ago

Please help me answer the question in the picture!

Slav-nsk [51]

Answer:

x = 5 units.

Step-by-step explanation:

In a parallelogram. diagonals bisect each other.

This means $\overline{CE} = \overline{BE}$ .

$\implies 15 - x = 2x$

$\implies 15 = 3x$

$\implies x = 5$ .

Therefore, the length of x = 5 units.

4 0

3 years ago

Many electronics follow a failure rate described by an exponential probability density function (PDF). Solar panels are advertis

katovenus [111]

Answer:

The right answer is "0.3193".

Step-by-step explanation:

According to the question,

Mean,

$\frac{1}{\lambda} = 13$

$\lambda = \frac{1}{13}$

As we know,

The cumulative distributive function will be:

⇒ $1-e^{-\lambda x}$

hence,

In the first 5 years, the probability of failure will be:

⇒ $P(X$

$=1-e^{-(\frac{1}{13} )\times 5}$

$=1-e^(-\frac{5}{13})$

$=1-0.6807$

$=0.3193$

3 0

3 years ago