How many ways can 7 students be selected from an organization of 30 to attend a national conference?

Determine the number of possibilities for selection. Express your solution in a complete sentence reflective of the scenario.

Answer:Mark me as Brainliest please

Step-by-step explanation:

Let's solve your inequality step-by-step.

[tex]\frac{1}{4}x-3\geq -1[/tex]

Step 1: Add 3 to both sides.

[tex]\frac{1}{4} x-3+3\geq -1+3[/tex]

[tex]\frac{1}{4} x\geq 2[/tex]

Step 2: Multiply both sides by 4.

[tex]4*(\frac{1}{4} x)\geq (4)*(2)[/tex]

x≥8

Let's solve your inequality step-by-step.

−3(x−2)≥2

Step 1: Simplify both sides of the inequality.

−3x+6≥2

Step 2: Subtract 6 from both sides.

−3x+6−6≥2−6

−3x≥−4

Step 3: Divide both sides by -3.

[tex]\frac{-3x}{-3} \geq \frac{-4}{-3}[/tex]

Answer:

srry dude this isn't rly a quesiton

Answer:71

71, 73 and 79

Step-by-step explanation:

A prime number is a number that can only be divided by 1 or itself. Otherwise, it is a composite numbers.

There are three numbers between

70

and

80

that fit this criteria,

71

,

73

, and

79

Answer:

yes

Step-by-step explanation:

it is rational

Answer:

Yes

Step-by-step explanation:

To write 1.572735 as a fraction you have to write 1.572735 as numerator and put 1 as the denominator. Now you multiply numerator and denominator by 10 as long as you get in numerator the whole number.

1.572735 = 1.572735/1 = 15.72735/10 = 157.2735/100 = 1572.735/1000 = 15727.35/10000 = 157273.5/100000 = 1572735/1000000

And finally we have:

1.572735 as a fraction equals 1572735/1000000

And since there is a ratio (a proper fraction) number, it is rational.

Answer:

1840 amd 710

Step-by-step explanation:

slope = -170. y-intercept = 1020

Step-by-step explanation:

Let [tex]P_1(0, 1020)[/tex] and [tex]P_2(6, 0).[/tex] The slope can be calculated as

[tex]m = \dfrac{0 - 1020}{6 - 0} = -170\:\text{m/hr}[/tex]

So the equation can be written as

[tex]y = -170x + b[/tex]

To solve for b, let's use the values for P2:

[tex]0 = -170(6) + b \Rightarrow b = 1020[/tex]

Therefore,

[tex]y = -170x + 1020[/tex]

To find the y-intercept, let x = 0. then the y-intercept is

[tex]y = -170(0) + 1020[/tex]

or

[tex](0, 1020).[/tex]

Answer:

4x³+x²

Step-by-step explanation:

to I was awesome and u too go to north and u too go home with he sister or talk

36 is the answer, hope this helps.

Answer: 162

Step-by-step explanation:

So you will need to find the Markup. The original cost is $120.

I hope this is the answer you are looking for.

Answer:

A = 8

Step-by-step explanation:

A/2 + 2 = 6

subtract 2 from each side to get:

A/2 = 4

multiply each side by 2 to get:

A = 8

Answer:

Dina took 12/8 = 3/2 hrs

So, if Masha's speed was x

3/2 x = 12-3

x = 6 mi/hr

Answer:

Step-by-step explanation:

Dina finished in a time of

12 mi / 10 mi/hr = 1.2 hr  

Masha's speed is (12 - 4 mi) / 1.2 hr = 6⅔ mph

Answer:

the discount is 50% the previous price

Answer:

the answer is 3000000000

Using the given ratio 3:4, Zali has 3 marbles and Muthu has 4 marbles.

If Muthu gives half of his marbles to Zali, Muthu would have 2 marbles (4/2 = 2) and Zali would have 5 ( 3+2 = 5). The ratio would now be 5:2

Answer: 5:2

Check the picture below.

[tex]\textit{volume of a cone}\\ V = \cfrac{\pi r^2 h}{3}~~ \begin{cases} r = \stackrel{radius}{12}\\ h = \stackrel{height}{5} \end{cases} \\\\\\ V = \cfrac{\pi \cdot 144\cdot 5}{3}\implies V = 240\pi \implies V\approx 753.98\implies V = \stackrel{\textit{rounded up}}{754}[/tex]

Answer:

6000 dollars duhhhhhhhhhhhh

Answer:

8.18897637795

Step-by-step explanation:

20.8 divided by 2.54 equals 8.2. So 8.2 inches is you answer.

Answer:

1 inch =2.54cm

number of inches in 20.8 = 20.8/2.54 = 8.1889 inches  

hope this will help you

0.3x = 48

So x is 48/0.3

Therefore, 0.5 times 48/0.3 is the answer

The given fraction [tex](\frac{1}{16} )[/tex] can correctly be read as one divided by sixteen.

A fraction can be defined as a numerical quantity that isn't a whole number and as such has two (2) parts.

Hence, a fraction is simply a part of a whole number.

Generally, a fraction comprises two (2) main parts and these include:

Mathematically, a fraction is represented as:

In order to read a fraction, you will start by naming the numerator (upper part) followed by the denominator (lower part).

In this scenario, the given fraction [tex](\frac{1}{16} )[/tex] can correctly be read as one divided by sixteen.

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Answer: See the drawing below

Explanation:

The region to the left of x = -3 has f(x) > 0, aka f(x) is positive. This is due to the sign chart indicating this with a + sign. The same applies from the region between x = -3 and x = -2. The graph will show f(x) above the x axis for these two regions.

When -2 < x < 0, f(x) is now negative and below the x axis. It goes above the x axis for the interval 0 < x < 2. Then it dips back down below the x axis again once it passes x = 2.

The graph below visually summarizes everything talked about. Keep in mind that there are infinitely many ways to draw a graph like this. There's not enough info to pin down one exact answer.

Answer: 275835.5

because 7072.7 times 39

[tex]\large{\rm{\underline{\underline{Answer:}}}}[/tex]

Angle AEB and Angle DEC are opposite angles which means they are equal in measure. Hence,

⇛ Angle AEB = Angle DEC

⇛ 9x + 8° = 3x + 42°

⇛ 9x - 3x = 42° - 8°

⇛ 6x = 34°

⇛ x = (34/6)°

To find: Angle DEC = 3(

34/6 °) + 42° = 59° (Ans)

Answer:

New points:

N: (4,-5)

X: (2,-3)

B: (-1,-4)

Step-by-step explanation:

Rotate about the origin (0,0) counter clockwise 90 degrees

So from a table, we want to find an equation that models the mass as a function of time, we will get the equation:

M(t) = 0.02*t^2 - 2.42*t + 99.57

And with that equation, we will find that the mass after 11 seconds is 75 grams.

From the table we have the points:

(2, 94.8)

(5, 87.9)

(8, 81.3)

And we know that this follows a quadratic model, then we have:

M(t) = a*t^2 + b*t + c

Notice that from the known points, we have 3 equations:

94.8 = a*2^2 + b*2 + c

87.9 = a*5^2 + b*5 + c

81.3 = a*8^2 + b*8 + c

So we have a system of equations, we can simplify the equations to get:

94.8 = a*4 + b*2 + c

87.9 = a*25 + b*5 + c

81.3 = a*64 + b*8 + c

To solve this, we start by isolating one of the variables in one of the equations, let's isolate c in the first one.

c = 94.8 - a*4 - b*2

now we replace this in the other two equations to get:

87.9 = a*25 + b*5 + (94.8 - a*4 - b*2)

81.3 = a*64 + b*8 + ( 94.8 - a*4 - b*2)

Now we simplify these two equations to get:

-6.9 = a*21 + b*3

-13.5 = a*60 + b*6

Now we do the same thing, I will isolate b in the first equation:

b = (-6.9 - a*21)/3 = -2.3 - a*7

Now we replace this in the other equation:

-13.5 = a*60 + (-2.3 - a*7)*6

Now we can just solve this for a:

-13.5 = a*(60 - 7*6) - 2.3*6

    0.3    = a*18

0.3/18 = a = 0.016

Wich can be rounded to:

a = 0.02

Then the value of b is:

b = -2.3 - a*7 = -2.3 - 0.016*7 = -2.42

And the value of c is:

c = 94.8 - a*4 - b*2 = 94.8 - 0.016*4 - (-2.42)*2 = 99.57

So the equation is:

M(t) = 0.02*t^2 - 2.42*t + 99.57

Now we can evaluate this in t = 11s to get:

M(11) = 0.02*11^2 - 2.42*11 + 99.57 = 75.37

Wich can be rounded to 75 grams.

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