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3 years ago

HELP

Mathematics

2 answers:

Nady [450]3 years ago

5 0

1.435 x 10^3 = 1,435

Ivanshal [37]3 years ago

4 0

Answer:

Answer:

A) 1.3×10^37 ergs

B) 1.435×10^3 mm

Step-by-step explanation:

A) The amount of energy will be the product of the energy rate and time:

(3.9×10^33 ergs/s)×(3.25×10^3 s) =12.675×10^(33+3) ergs

= 1.2675×10^(1+36) ergs

= 1.2675×10^37 ergs ≈ 1.3×10^37 ergs

The mantissa of the result is the product 3.9×3.25, adjusted to have one digit left of the decimal point. The exponent of the result is the sum of the exponents of the factors, adjusted by 1 to match the adjustment in the mantissa.

The final value should be rounded to 2 significant figures, reflecting the precision of the sun's energy production.

B) A millimeter is a small fraction of an inch. 10^-3 mm is a small fraction of the width of a human hair, so 1.435×10^-3 mm is not a reasonable estimate of the distance between railroad tracks.

On the other hand, 1.435×10^3 mm is 1.435 m, almost 56.5 inches. This is a much more reasonable measurement of the distance between railroad rails.

1.435×10^3 mm is more reasonable

Step-by-step explanation:

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PLEASE HELP ME!!!

julia-pushkina [17]

A) h(x) = g(x) + 30
The term g(x) represents the cost of the cable service minus the startup fee. Also, B, C, and D choices do not represent $30 as a one-time startup fee, so they are immediately wrong answers.

Good luck!

4 0

3 years ago

3–34 The average atmospheric pressure in Denver (elevation = 1610 m) is 83.4 kPa. Determine the temperature at which water in an

SOVA2 [1]

Answer:

T = 94.59 degree C

Step-by-step explanation:

Given data:

P= 83.4 kPa

$P= 83.4 \times 10^3 Pa \frac{1 bar}{10^5 Pa}$

P = 0.834 bar

for Saturated table

P = 0.8 bar T = 93.50 degree C

P = 0.9 bar T = 96.71 degree C

from interpolation method

$\frac{0.834 - 0.8}{0.9 - 0.8} = \frac{z}{96.71 - 93.5}$

z = 1.0914

T = 93.5 + z = 94.59 degree C

6 0

4 years ago

Subtract. Write your answer in simplest form. 9 1/2 - 1 6/7

Aleonysh [2.5K]

The correct answer is 7 9/14, I have provided my work shown below

5 0

3 years ago

Please help:) with my math it’s Quadratic Functions

vaieri [72.5K]

Answer:

Part A: 2531.25; It means the maximum amount of profit that can be obtained at a specific amount of price reduction (x-value) for the shirts' market price.

Part B: (0,2500); It represents the profit that can be made by reducing $0 in the shirts' price.

Part C: Yes, it has a zero. Its zero is (25,0) and that represents the amount of profit made by reducing $25 from the price of each shirt being sold, which means if it sells for $0 by reducing $25 from the price of each shirt, then the x-coordinate must also represent the original price of each shirt, $25.

Step-by-step explanation:

Part A: Look at the graph! The highest y-value should be the maximum of each graph, which can be located at the vertex of a quadratic function. In this graph, the vertex is (2.5, 2531.25), where which its y-value contains the highest point of a graph, since the graph is concave down.

Part B

$y=a(x-2.5)^{2} +2531.25\\$

$0=a(25-2.5)^{2} +2531.25\\$

$a(22.5)^{2} =-2531.25$

$506.25a =2531.25$

$a=-5$

$y=-5(x-2.5) ^{2}+2531.25$

$y=-5(0-2.5)^{2} +2531.25$

$y=-31.25+2531.25$

$y=2500$

y-intercept: $(0,2500)$

Part C

The graph only has a zero if the function touches the x-axis, also known as the line, $y=0$ . In this case the graph does intersect the x-axis at the point, $(25,0)$ . Therefore, it has a zero, and the value of the x coordinate at the zero is 25. This value represents the profit generated from reducing the price of each shirt by $25, which is $0. Therefore, this also represents the original price of each shirt without any price reduction, since there is no profit made by completely reducing the price of each shirt at that specific point in the graph, which is 25 or $25. Therefore, this displays that.

4 0

3 years ago

there are 3 times as many adults as children at a book fair what is the ratio of people at the book fair

kakasveta [241]

Answer:

1:3

Step-by-step explanation:

There are 3 adults per 1 child at the book fair. I think this is right but im not 100% sure :)

3 0

3 years ago