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3 years ago

Which number is an integer? 6 4.2 3/4 5 1/2

Mathematics

2 answers:

stellarik [79]3 years ago

3 0

Answer:

5, 6

Step-by-step explanation :

ahrayia [7]3 years ago

3 0

Actually all of these numbers are integers, but till your level all you should know is that numbers with decimal points are integers. So from here, it’s 4.2

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Evaluate each expression if a = 4.1, b = 5.7, and c=0.3.<br> 4. a+b-c <br> 5. 10-(a+b)<br> 6. B- c+2

posledela

Answer:

a+b-c = 9.5

10-(a+b) = 0.2

b-c+2 = 7.4

Step-by-step explanation:

Given the expression

a+b-c

a=4.1

b=5.7

c=0.3

substituting the values in the expression

a+b-c = 4.1+5.7-0.3

= 9.8 - 0.3

= 9.5

Given the expression

10-(a+b)

a=4.1

b=5.7

c=0.3

substituting the values in the expression

10-(a+b) = 10 - (4.1+5.7)

= 10 - 9.8

= 0.2

Given the expression

b-c+2

a=4.1

b=5.7

c=0.3

substituting the values in the expression

b-c+2 = 5.7 - 0.3 +2

= 5.4 + 2

= 7.4

7 0

2 years ago

Write the equation of the ellipse with foci at (-2,2) and (4,2) and major axis of length 10 *

Luda [366]

Answer:

The answer to your question is $\frac{(x - 1)^{2}}{25} + \frac{(y - 2)^{2}}{16} = 1$

Step-by-step explanation:

Data

Foci (-2, 2) (4, 2)

Major axis = 10

Process

1.- Plot the foci to determine if the ellipse is vertical or horizontal. See the picture below.

From the graph we conclude that it is a horizontal ellipse.

2.- Determine the foci axis (distance between the foci)

2c = 6

c = 6/2

c = 3

3.- Determine a

2a = 10

a = 10/2

a = 5

4.- Determine b using the Pythagorean theorem

a² = b² + c²

-Solve for b

b² = a² - c²

b² = 5² - 3²

b² = 25 - 9

b² = 16

b = 4

5.- Find the center (1, 2) From the graph, it is in the middle of the foci

6.- Find the equation of the ellipse

$\frac{(x - 1)^{2}}{5^{2}} + \frac{(y - 2)^{2}}{4^{2}} = 1$

$\frac{(x - 1)^{2}}{25} + \frac{(y - 2)^{2}}{16} = 1$

3 0

2 years ago

The equation gives the speed at impact, V metres per second, of an object dropped from a height of h metres. SHOW WORK From what

devlian [24]

Answer:

h = 17.65 m

Step-by-step explanation:

The given equation gives the speed at impact :

$v=\sqrt{2gh}$

h is height form where the object is dropped

Put v = 18.6 m/s in the above equation.

$h=\dfrac{v^2}{2g}\\\\h=\dfrac{(18.6)^2}{2\times 9.8}\\\\h=17.65\ m$

So, the object must be dropped from a height of 17.65 m.

4 0

3 years ago

The mean of a set of 5 numbers is 39 and the median is 40. If the mean of the largest two numbers is 49 , then what is the sum o

Aleks [24]

Sum of 5 numbers = 39*5 = 195

largest two numbers sum = 49*2 = 98

median = 40

sum of smallest two numbers = 195-(98+40) = 195-138 = 57

3 0

2 years ago

Help me with these two questions pls. This is the last thing I need for the end of the school year, then I'm finally done! (20 B

fiasKO [112]

Answer: the first is direct and the second is inverse.

Step-by-step explanation: There is no variation in the Y axis on the first, but there is lots of variation in the second

7 0

3 years ago