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sladkih [1.3K]
3 years ago
8

Write two hundred thousand and fifty seven in figures

Mathematics
1 answer:
mihalych1998 [28]3 years ago
8 0
200,057
This is the how write
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Justin surveyed 280 of the students in his school about their favorite color. 98
Mamont248 [21]

Answer:

\frac{98}{280}  \times  \frac{100}{1}

0.35 \times 100 \\  = 35\%

8 0
3 years ago
Propane has a heat energy of 2,470 BTU/ft cubed. How much energy can a propane tank with a volume of 43.7 ft cubed produce?
professor190 [17]

Answer: 107939\ BTU

Step-by-step explanation:

Given

Propane produced heat energy of 2470\ BTU/ft^3

The volume of the tank is 43.7\ ft^3

The energy produced by this propane tank is

\Rightarrow 2470\times 43.7=107939\ BTU

4 0
3 years ago
Suppose 10000 people are given a medical test for a disease. About1% of all people have this condition. The test results have a
Alina [70]

Answer:

The percent of the people who tested positive actually have the disease is 38.64%.

Step-by-step explanation:

Denote the events as follows:

<em>X</em> = a person has the disease

<em>P</em> = the test result is positive

<em>N</em> = the test result is negative

Given:

P(X)=0.01\\P(P|X^{c})=0.15\\P(N|X)=0.10

Compute the value of P (P|X) as follows:

P(P|X)=1-P(P|X^{c})=1-0.15=0.85

Compute the probability of a positive test result as follows:

P(P)=P(P|X)P(X)+P(P|X^{c})P(X^{c})\\=(0.85\times0.10)+(0.15\times0.90)\\=0.22

Compute the probability of a person having the disease given that he/she was tested positive as follows:

P(X|P)=\frac{P(P|X)P(X)}{P(P)}=\frac{0.85\times0.10}{0.22} =0.3864

The percentage of people having the disease given that he/she was tested positive is, 0.3864 × 100 = 38.64%.

3 0
3 years ago
Andre and Diego were each trying to solve 2x+6=3x-8. Describe the first step they each make to the equation.
Vlad [161]
First combine like terms so
2x+6=3x-8
3x - 2x =1X
-6 - -8= -14
1X ÷ -14
then just divide
4 0
3 years ago
Answers for both boxes please ​
vredina [299]

Answer:

(8,-5)

Step-by-step explanation:

Add the equations in order to solve for the first variable. Plug this value into the other equations in order to solve for the remaining variables.

Point Form:

( 8 , − 5 )

Equation Form:

x  =  8 ,  y  =  − 5

4 0
3 years ago
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