Three times the sum of a number and 4 is twice a number minus 8.

Answer:

1.y = 4/5x + 6/5       2. y = -5x + 16       3.y = 7x - 37

Step-by-step explanation:

1. y = 4/5x + b

2 = 4/5(1) + b

2 = 4/5 + b

6/5 = b

y = 4/5x + 6/5

2. y = -5x + b

1 = -5(3) + b

1 = -15 + b

16  = b

y = -5x + 16

3. y = 7x + b

-2 = 7(5) + b

-2 = 35 + b

-37 = b

y = 7x - 37

Answer:

[tex]y =\sqrt{\frac{1}{.5m}x}[/tex]

Step-by-step explanation:

f(x) = .5mx^2

x = .5my^2

x/y^2 = .5m

y^2/x=1/.5m

y^2=1/.5m * x

[tex]y =\sqrt{\frac{1}{.5m}x}[/tex]

Answer:

1. ..................

2. ,,,,,,,,,,,,,,,,,,

3. _______

Step-by-step explanation:

I don't know

Answer:

X^2/9100+y^2/6800=1

Step-by-step explanation:

using your numbers, we have

b = 6400+800 = 7200

a = 6400+5400 = 11800

So, just plug that into the standard equation for an ellipse, with center at (0,0)

The equation of the ellipse is [tex]\rm \dfrac{x^{2} }{7200} } + \dfrac{y^{2} }{11800} } = 1[/tex].

Ellipse is a locus of a point that moves in a plane such that the sum of its distances from the two points is called foci. It is taken from the cone by slicing it at an angle.

Given

The earth has a minimum altitude of 800km and

A maximum altitude of 5400km.

Astronauts consider the radius of the earth to be 6400km.

The equation of the curve is followed by the astronaut.

The earth has a minimum altitude of 800km and

A maximum altitude of 5400km.

Astronauts consider the radius of the earth to be 6400km.

The equation of the ellipse is given by

[tex]\rm \dfrac{x^{2} }{a^{2} } + \dfrac{y^{2} }{b^{2} } = 1[/tex]

Then

a² = 6400 + 800 = 7200

b² = 6400 + 5400 = 11800

Then the equation of ellipse will be

[tex]\rm \dfrac{x^{2} }{7200} } + \dfrac{y^{2} }{11800} } = 1[/tex]

Thus, the equation of the ellipse is [tex]\rm \dfrac{x^{2} }{7200} } + \dfrac{y^{2} }{11800} } = 1[/tex].

More about the ellipse link is given below.

https://brainly.com/question/19507943

Answer:

distance is 11.3137 units

Step-by-step explanation:

[tex] \sqrt{( - 4 -2) ^{2} + (3 - - 5) ^{2} } \\ \sqrt{64 + 64} \\ \sqrt{128 } \\ \sqrt{2 \times 64} \\ \sqrt{2} \times \sqrt{64} \\ 8 \sqrt{2} \: units \\ 11.3137 \: units[/tex]

hopefully it makes sense

:)

Answer:

Step-by-step explanation:

Correct choice is 3.

Answer:

1.6q + 10.7p + 10.2n

Step-by-step explanation:

With the perimeter they mean all sides added up together. Doing this results in a long expression:

3.5n + 6.5p + 6.7n - 7.9q + 9.5q + 4.2p

When adding terms like this, it is important to remember a rule: the numbers before letters can only be added to each other when they are linked to the same letter. So 2n + 2n becomes 4n, but 2n + 2p doesnt become 4np. When you know this, you can simplify the expression:

3.5n + 6.7n = 10.2n

6.5p + 4.2p = 10.7p

9.5q - 7.9q = 1.6q

This added together gets us 1.6q + 10.7p + 10.2n

Feel free to reach out when you need more explanation!

Answer:

1.6q + 10.7p + 10.2n

Step-by-step explanation:

Perimeter is sum of distance around, so just add all 3 sides, combining like terms.

Answer:

Second answer

Step-by-step explanation:

first answer: 4 negative numbers  multiplied = 2 postive numbers multipled = 1 positive number

second answer: 3 negative numbers multiplied = 1 positive number multiplied by 1 negative number = 1 negative number

third answer: Negative and positive numbers multiplied by zero = 0

fourth answer: 2 negative numbers multiplied by 2 positive numbers = 1 positive number multiplied by 1 positive number = positive number.

Answer:

Indian ocean is one of the world's oceans

Answer:

it is linear the above given equation.

Answer:

A) Rectangular Prism

B) Triangular Pyramid

C) Square Pyramid

Answer:

A) rectangle

B) triangular prism

C( square pyramid

Answer:

$367.5

Step-by-step explanation:

$350 × 0.05% = $17.5

$350 + $17.5 = $367.5

Answer:

6 1/4 cups of flour

Step-by-step explanation:

24/2 = 12

2.5/2 = 1.25

12 x 5 = 60

1.25 x 5 = 6.25 cups

For every 24 cookies Markes needs 2.5 cups of flour. So, for 12 cookies he needs half of that which is 1.25 cups. 12 is a fifth of 60, so we multiply 1.25 by 5 which gives us 6.25 cups of flour. :D

Answer:

7.75

Step-by-step explanation:

31/4= 7.75

Answer:

2.The set of all values for output of a function. 4.The values for the dependent variable. And 6.The set of all y values.

Step-by-step explanation:

Domain is the input of the function and is also the independent variable, as for the range is the output and dependent variable. Given a function f , the set x values (inputs) is the domain of f , and the set y values ( outputs ) is the range of f . The domain of a function f is all of the values for which the function is defined. For instance, 1x is not defined when x=0 . Also, √x is not defined when x is negative.

(I’m also just learning this so I apologize if I am incorrect. I try my best.)

Hey there!

The word sum usually means addition in mathematics!

27 + (-28) / 2

= 27 - 28 / 2

= -1 / 2

= -0.5

Answer: -1/2 OR -0.5 (either those should work because they are both equivalent)

Good luck on your assignment and enjoy your day!

~Amphitrite1040:)

[tex] \huge \boxed{\mathfrak{Question} \downarrow}[/tex]

[tex] \large \boxed{\mathfrak{Answer \: with \: Explanation} \downarrow}[/tex]

[tex] \sf\frac { 27 + ( - 28 ) } { 2 } \\ [/tex]

[tex] \boxed{\boxed{ \boxed{ \bf\frac{-1}{2} = \bf- 0.5}}}[/tex]

Answer:

10 percent

Step-by-step explanation:

please mark brainliest

10% of her semester scholarship earnings are spent on​ texts.

The percentage is defined as a given amount in every hundred. It is a fraction with 100 as the denominator percentage is represented by the one symbol %.

The percentage is just like the amount of that value but between 1 to 100 and it is very useful to predict for example if you say 678 then we have to know about the full number also but if you say 80% then it becomes clear.

The percentage of 270 out of 2700 is ;

(270/2700) × 100 %

⇒ 100/10= 10%

Hence "10% of her semester scholarship earnings are spent on​ texts".

For more about the percentage,

brainly.com/question/13450942

#SPJ2

Using conditional probability, it is found that:

Conditional probability is the probability of one event happening, considering a previous event. The formula is:

[tex]P(B|A) = \frac{P(A \cap B)}{P(A)}[/tex]

In which:

For this problem, the events are given as follows:

For this problem, the percentages associated with a positive test are:

Hence the proportion of positive tests is given by:

P(A) = 0.98(0.01) + 0.05(0.99) = 0.0593.

5.93% of the athletes tested would have a positive test.

The proportion that both tests positive and are drug users is:

[tex]P(A \cap B) = 0.98(0.01) = 0.0098[/tex]

Hence the conditional proportion is:

P(B|A) = 0.0098/0.0593 = 0.1653.

16.53% of the athletes that test positive are drug users.

More can be learned about conditional probability at https://brainly.com/question/14398287

#SPJ1

Answer:

x = 5

Step-by-step explanation:

5x+4x=45

9x = 45

x = 5

Hvae a good day

Answer:

The answer- I believe is 16.

Step-by-step explanation:

So first let's start with the square root of 4. The square root of 4 is 2 since 2x2 is 4.

Next, 45/5 is 9.

And, 125/25 is 5.

When you add all of them-

2+9+5

you get 16

Answer:

-6.825 (-2 33/40). hope this helps

Step-by-step explanation:

- Zombie

Answer:

-38y - 19z - 4

Step-by-step explanation:

You meses to multiply the numbers outside the brackets with the values inside.

First you have -2(3y+2) so you multiply -2 with 3y = -6y and then you multiply the -2 with the +2 = -4. So you're left with -6y - 4 - 7z - 4(3z+8y).

Now do the same with the last one, multiply -4 by 3z = -12z, then multiply -4 with +8y = -32y. You're left with -6y-4-7z-12z-32y.

Now we change the order to make it easier and we have -32y-6y-12z-7z-4, we make the subtractions and we get -38y - 19z - 4

Answer:

5.4 degress

Step-by-step explanation:

The starting tempereture is -18.3 deegress and the it increased by 23.7 throughout the day. so we can convert this into a expression.

-18.3+23.7 = ?

this is the same thing as 23.7-18.3.

23.7-18.3=5.4

So the answer is 5.4 degress,

hope this helps!

The temperature for the day is 5.4° F.

What is Measurement unit?

A measurement unit is a standard quality used to express a physical quantity.

Given that;

The starting temperature is -18.3 degrees and then it increased by 23.7 throughout the day.

Now, We can formulate as;

23.7 + (-18.3)

Solve as;

= 23.7 + (-18.3)

= 23.7 - 18.3

= 5.4

So, The temperature for the day is 5.4° F.

Learn more about the measurement unit visit:

https://brainly.com/question/18559676

#SPJ2

Answer:

it is correct or not ? if it is incorrect sorry

the answer is....... x= -4

Answer:

132ft/s

Step-by-step explanation:

90mi/hr =  ________ft/s            1hr = 3600s

                                                    1 mi =  5280ft

90mi/hr  x  5280ft/mi    x   1hr/3600s   =   132ft/s   (after cancelling units)