Can anybody help me with that ?

Answers

Answer 1

Answer: the total voltage across the end points is 5 V
so, Vtotal = V(thermistor) + V(resistor)
5= 2 +Vr
Vr= 3 Volt
the current passing through the Resistor I= V/ R
so I = 3/1050
I=1/350 A
while the Resistor and thermistor are series the I(total) = I(thermistor) = I(resistor) = 1/350 A
Voltage at the thermistor = 2V
so r = V/ I
then R(thermistor) = 700 ohm

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If you wanted to reduce a 8 by 6 rectangle by a ratio of 1/4,what would the dimensions of the new rectangle be?

Answers

Answer:

The dimensions of the new rectangle are $2\ by\ 1.5$

Step-by-step explanation:

we know that

In this problem the ratio of $(1)/(4)$ is equal to the scale factor

To obtain the dimensions of the new rectangle multiply the dimensions of the original rectangle by the scale factor

$8*(1/4)=2\ units$

$6*(1/4)=1.5\ units$

Answer=2 by 1.5

Rectangle= 8 by 6

Reduced Rectangle= 1/4(8) by 1/4(6)
Reduced Rectangle= 2 by 1.5

The National Football League (NFL) polls fans to develop a rating for each football game. Each game is rated on a scale from 0 (forgettable) to 100 (memorable). The fan ratings for a random sample of 12 games follow. 57 61 87 74 72 73 19 56 81 79 83 75 a. Develop a point estimate of mean fan rating for the population of NFL games (to 2 decimals). b. Develop a point estimate of the standard deviation for the population of NFL games (to 4 decimals).

Answers

The point estimates for the mean and standard deviation of the given data is respectively; 68 and 17.6

What is point Estimate?

A) To find the point estimate of the mean, we add all up all the data and divide by the number of values.

Thus;

∑x = 57 + 61 + 86 + 87 + 72 + 73 + 19 + 56 + 81 + 79 + 83 + 75 = 816

n = 12 numbers

Thus;

mean = ∑x/n = 816/12

Mean = 68

B) To find the estimate of the standard deviation, we would get it from the formula;

s = √[(n*(∑x²) - (∑x)²)/n(n - 1)]

∑x² = 572 + 612 + 862 + ... + 742 = 59,010

s = √[ (12*(59,010) - (816)²)/(12)(11)]

s = 17.6

Read more about Point Estimate at; brainly.com/question/9562180

The length of x 200 feet

Answers

Answer:

If the length of x is less than 200, then add <.

If the length of x is more than 200, then add >.

If the length of x is 200, then add =.

Step-by-step explanation:

Which of the sets of ordered pairs represents a function? (5 points)A= {(2. -2), (5, -5), (-2, 2). (-5, 5))
B= {(4, 2). (4, -2). (9, 3). (9, -3)}
O1) Only A
O2) Only B
O3) Both A and B
O4) Neither A nor B